Division 7.01 — Historic Preservation

Ontario Zoning Code · 2026-06 edition · ingested 2026-07-06 · Ontario

Sections:

7.01.000: Purpose
7.01.005: Applicability
7.01.010: The Ontario Register of Historic Resources
7.01.015: Historic Rehabilitation Financing Program
7.01.020: California Historical Building Code (CHBC)
7.01.025: Incentives for Historic Preservation
7.01.030: Historic Preservation Mitigation Fee
7.01.035: Historic Preservation Trust Fund
7.01.040: Preservation Easements
7.01.045: Owner's Duty to Keep a Historic Resource in Good Repair
7.01.050: Ordinary Maintenance Repair
7.01.055: Unsafe or Dangerous Conditions
7.01.060: Enforcement and Penalties
7.01.065: Guidelines for the Treatment of Historic Properties

7.01.000: Purpose

The purpose of this Division is to specify significance criteria for the designation of historic resources, procedures for designation, and review procedures to:

A . Safeguard the character and history of the City, which is reflected in its unique culturally, historically, and architecturally significant structures and heritage, with emphasis on the "Model Colony," as recognized by an Act of Congress and presented at the St. Louis World's Fair in 1904;

  • B . Encourage and promote the adaptive reuse of the City's historic resources;

C . Enhance, perpetuate, and preserve architecturally and historically significant structures and promote revitalization of historic neighborhoods and commercial areas;

  • D . Ensure that the rights of the owners of historic resources are safeguarded;

E . Foster civic pride in the beauty and noble accomplishments of the past by promoting private stewardship of historic resources that represent these accomplishments;

F. Fulfill the City's responsibilities as a Certified Local Government under Federal preservation laws;

G. Promote the identification, documentation, and evaluation of the significance of individual historic resources and districts;

H. Implement the historic preservation goals, policies, and programs of the Policy Plan (General Plan) component of The Ontario Plan;

  • I.

Promote the City as a destination for tourists and as a desirable location for business;

J. Promote public awareness of the value of rehabilitation, restoration, and maintenance of the existing building stock as a means to conserve reusable material and energy resources;

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K . Recognize the City's historic resources as economic assets and provide economic financial incentives for historic preservation;

L. Stabilize and improve property values, and enhance the aesthetic and visual character, place making, diversity, and environmental amenities of the City's historic properties and areas;

M . Promote public knowledge, appreciation, and understanding of the City's past, and foster civic and neighborhood pride in the beauty and accomplishments of the past;

N . Promote the enjoyment and use of historic resources appropriate for the education and recreation of the people of the City;

O . Recognize historic resources and protect areas of historic structures from encroachment of incompatible designs;

  • P . Promote public awareness of the benefits of preservation; and

Q . Encourage public participation in historic preservation, thereby increasing civic pride in the City's heritage.

7.01.005: Applicability

The provisions of this Division shall apply to all historic resources within the City, including improvements, buildings, structures, signs, features, historic districts, conservation zones, trees, or other objects of cultural, architectural, or historical significance to the City, State of California, the Southern California region, or the nation, which have been determined eligible for nomination or designation, and determined to be appropriate for historic preservation by the City.

7.01.010: The Ontario Register of Historic Resources

A. Purpose. The purpose of this Section is to establish an official local register, which includes an inventory of buildings, structures, sites, objects, and districts worthy of preservation due to their significance in history, architecture, archeology, engineering, and/or culture within the City.

B. Applicability. The Historic Preservation Subcommittee is hereby empowered to review evaluations of potential historic resources, which have been identified, recorded, and documented through a Historic Resource Survey, against criteria for local landmark and district designations for the purpose of approving or denying inclusion of a potential historic resource to the Ontario Register. The Historic Preservation Subcommittee shall be responsible for maintaining the Ontario Register.

C. Historic Resource Surveys. The City shall conduct, from time to time, a survey to identify properties that have the potential to become eligible historic resources, as well as areas and neighborhoods that, due to the geographic or thematic concentration of potential historic resources, have the potential to be historic districts. These properties, surveyed at the reconnaissance level pursuant to standards established by the California Office of Historic Preservation, are identified but not evaluated for historic significance, and, therefore, are not considered eligible historic structures or eligible historic districts.

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D. Eligible Historic Resources. Any property or grouping of properties listed on the Ontario Register prior to September 1, 2003, or after September 1, 2003, surveyed at the intensive level pursuant to standards established by the California Office of Historic Preservation, and determined to meet the designation criteria for local historic landmarks or local historic districts set forth in Section 4.02.040 (Historic Preservation—Local Historic Landmark and Local District Designations, Historic Resource Tiering, and Architectural Conservation Areas) of this Development Code, shall be determined by the Approving Authority to be an "eligible" historic resource.

E. Historic Resources. Those Improvements, buildings, structures, signs, features, Historic Districts, conservation zones, trees, or other objects of cultural, architectural, or historical significance to the City, State, Region, or the Nation, which have been determined to be eligible for nomination or designation and determined to be appropriate for historic preservation by the Approving Authority.

7.01.015: Historic Rehabilitation Financing Program

A. Purpose. The purpose of this Section is to establish a program of long term, low interest loans to finance the preservation, restoration, and rehabilitation of historic resources pursuant to the provisions of the Marks Historic Rehabilitation Act of 1976.

B. Applicability. The City hereby establishes a Historic Rehabilitation Financing Program pursuant to the provisions of the Marks Historic Rehabilitation Act of 1976. Any building, structure, object, or site that is eligible for funding pursuant to the Historic Rehabilitation Financing Program, shall be within a rehabilitation area, as defined in Subsection C (Rehabilitation Areas), below, and shall consist of one or more of the following:

1. The building, structure, object, or site shall be a designated local historic landmark;

2. The building, structure, object, or site shall be a contributing structure to a designated local historic district; or

3. The building, structure, object, or site shall be listed, or determined eligible for listing, on the California Register of Historic Resources or the National Register of Historic Places.

C. Rehabilitation Areas.

1. Original Downtown and Euclid Avenue Area. This area consists of the City's original downtown, and extends north to include the historic districts adjacent to Euclid Avenue, the boundary of which is as follows:

Beginning at the intersection of the centerlines of State Street and San Antonio Avenue, thence north to the northernmost city boundary, thence east to the centerline of Sultana Avenue, thence south to the centerline of G Street, thence east to the centerline of Campus Avenue, thence south to the centerline of State Street, thence west to the point of beginning.

2. Guasti. This area consists of the Historic Guasti Winery, the boundary of which is as follows:

Beginning at the intersection of the centerline of Archibald Avenue and the Southern Pacific Railroad Mainline, thence east to a point 550.19 FT east of the

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centerline of Turner Avenue, thence north 492.08 FT, thence west to the centerline of Turner Avenue, thence north to the centerline of Interstate 10 (San Bernardino Freeway), thence west to the centerline of Archibald Avenue, thence south to the point of beginning.

D. Rehabilitation Requirements. Any building, structure, object, or site that is rehabilitated with funds from the Historic Rehabilitation Financing Program, shall comply with the following:

1. Rehabilitation Standards. Any rehabilitation must use the Secretary of the Interior's Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring, or Reconstructing Historic Buildings, and any local preservation and design guidelines.

2. Maintenance. Any building, structure, object, or site rehabilitated with funding from the Historic Rehabilitation Financing Program shall be maintained for a period of at least 10 years, beginning on the date of completion of the rehabilitation.

E. Advisory Board. An advisory board shall be established pursuant to, and in accord with, the provisions of State law, if and when the implementation of the provisions of this Section are deemed warranted.

7.01.020: California Historical Building Code (CHBC)

The CHBC provides alternative building regulations to address unique construction issues inherent in the maintenance, rehabilitation, preservation, restoration, adaptive reuse, or relocation of structures surveyed and identified as a historic resource. The CHBC may be used for any historic resource in the City's building permit procedure.

7.01.025: Incentives for Historic Preservation

A. Purpose. The purpose of this Section is to allow for the use of certain incentives to support the preservation, maintenance, and appropriate rehabilitation of the City's designated historic resources.

B. Applicability.

1. Qualifying Properties. Preservation incentives shall be made available to owners of the following types of properties:

a. Properties listed on the National Register of Historic Places;

b. Properties listed on the California Register of Historic Resources;

c. Properties designated as Local Historic Landmarks; or

d. Properties that are contributing structures within designated local historic

districts.

2. Qualifying Projects. The below-listed project types shall be eligible for the receipt of preservation incentives. Qualifying project types shall comply with the Secretary of the Interior's

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Standards for the Treatment of Historic Properties and shall be approved by the City's Historic Preservation Commission.

a. Restoration or exterior rehabilitation that includes the restoration, repair, or replacement, in kind, of significant architectural features, and that complies with the Secretary's Standards;

b. Roof replacement with similar material, or repair and replacement of roofing where the roof is a significant architectural feature;

c. Relocation to another site;

d. Restoration of designated interior spaces, which complies with the Secretary of the Interior's Standards for the Treatment of Historic Properties;

e. Seismic reinforcement or structural rehabilitation;

f. Replacement of building systems that will further the preservation of the

historic resource; or

g. Additions (eligible for development incentives only).

C. Types of Incentives. The below-listed incentives may be used for the eligible projects identified in Subsection B (Applicability) of this Section.

1. Economic and Financial Incentives. The following economic and financial incentives may be applied to a project following approval by the Historic Preservation Commission or the Historic Preservation Trust Board of Trustees, as applicable, and approval by the City Manager or the City Council, as applicable:

a. Grants or loans approved through the Historic Preservation Trust pursuant to Section 7.01.030 (Historic Preservation Trust Fund) of this Division;

b. Approval of a Mills Act contract pursuant to Section 4.02.070 (Historic Preservation—Mills Act Contracts) of this Development Code;

c. Approval of funding through the Historic Rehabilitation Financing Program pursuant to Section 7.01.015 (California Historical Building Code) of this Division;

d. Grants or loans through other City funding sources, including, but not limited to, redevelopment and housing funds;

e. Preservation easements;

f. Reduction or elimination of building plan check or permit fees;

g. Reduction or elimination of development impact fees;

h. Reduction or elimination of any other applicable City fees; or

i. Federal rehabilitation tax credits (applied through the California Office of Historic Preservation).

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2. Development Incentives. The following development incentives to be applied to the project:

a. California Historical Building Code. Use of the CHBC pursuant to Section 7.01.015 (California Historical Building Code) of this Division.

b. Parking Reduction. For existing single-family dwellings with a one-car garage, the Planning Director may waive the requirement for 2 off-street parking spaces within a garage when adding floor area, if an existing one-car garage contributes to the significance of the property and/or district, and the existing garage is in good condition, or, if deteriorated, will be returned to good condition as part of the work to add new living space to the residence.

c. Setback Reductions and Increases in Maximum Building Height. The Planning Director may grant reductions in required building setbacks or increases in the maximum allowed building height when the setback reduction or increase in allowed building height allows for the restoration of a character-defining feature, or allows character-defining features to be replicated in additions to historic structures. In no case, however, shall a reduction in a setback be granted when the reduction will cause an adverse effect to the property or neighboring property, or cause an adverse effect to the character of the neighborhood or district.

d. Adaptive Reuse . Departures from certain development standards may be waived to encourage adaptive reuse of qualified historic buildings pursuant to, and in accord with, the provisions of Section 4.03.010 of this Development Code.

7.01.030: Historic Preservation Mitigation Fee

A. Purpose. The purpose of this Section is to establish the Historic Preservation Mitigation Fee whereby the impacts resulting from the demolition (either in part or whole) of historic resources may be lessened by the collection of fees that will provide a source of funds for the conservation, preservation, restoration, and rehabilitation of historic resources within the City.

B. Applicability.

1. A mitigation fee, in an amount established by this Section, shall be paid prior to the issuance of any permit for demolition or subject to the terms of an agreement approved by the City Manager or his or her designee and recorded against the property, whether in whole or in part, of any historic resource, including accessory buildings and structures that do not contain living space, such as garages and workshops, which contribute to the historic significance of a property. The mitigation fee shall be deposited in the Historic Preservation Trust Fund established pursuant to Section 7.01.030 (Historic Preservation Trust Fund) of this Division.

2. The Historic Preservation Commission may reduce the amount of mitigation fee to be paid if it can be clearly established that the amount of fee to be paid would amount to a regulatory taking of property.

3. Additions and accessory buildings and structures determined not to be contributing to the significance of the property shall not be assessed a mitigation fee.

4. The mitigation fee structure shall be based on the most current International Code Council (ICC) Building Valuation Data. Fees can range from 10 to 30 percent of the square foot

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cost to construct the building or structure that is being demolished. The square foot construction cost is determined by the construction type (building occupancy group) of the demolished building or structure. The percentage (or fee amount) that is assessed is determined by historic significance and is applied to the cost per square foot of the building or structure that is being demolished.

a. The mitigation fee for historic resources listed on the Ontario Register shall be determined based upon a 3-tier system, established pursuant to Subsection 4.02.040.G (Historic Resource Tiering System) of this Development Code, which ranks historical resources within the City, based upon their size, type, and significance. Tier III historic resources are 10 percent, Tier II are 20 percent, and Tier I are 30 percent of the price per square foot construction cost as established in the most current ICC Building Valuation Data.

ed pursuant to Subsection 4.02.040.G (Historic Resource Tiering System) of this Development Code, which ranks historical resources within the City, based upon their size, type, and significance. Tier III historic resources are 10 percent, Tier II are 20 percent, and Tier I are 30 percent of the price per square foot construction cost as established in the most current ICC Building Valuation Data.

b. The mitigation fee for historic resources determined through survey evaluation, completed by individual(s) meeting the Secretary of the Interior Professional Standards, which are not listed in the Ontario Register, shall be determined by the level of historic integrity. Moderate-level integrity shall be 10 percent and high-level integrity shall be 20 percent of the price per square foot construction cost as established in the most current ICC Building Valuation Data.

7.01.035: Historic Preservation Trust Fund

A. Purpose. The purpose of the Historic Preservation Trust Fund is to provide funding, under direction of the City Council, for the conservation, preservation, restoration, and rehabilitation of historic resources within the City.

B. Applicability. The Historic Preservation Trust Fund is hereby established as means to receive, recycle, and replenish monies to assist the funding of historic preservation projects within the City. All funds deposited in the Historic Preservation Trust Fund shall be used solely for the conservation, preservation, restoration, and rehabilitation of historic resources, as provided in this Section.

C. Trust Fund Administration.

1. The City Council shall have authority for establishing policy for Historic Preservation Trust Fund expenditures.

2. The Historic Preservation Commission shall have authority to make recommendations to the City Council regarding grant and loan applications, acquisition of property, contracts and lease agreements, and any other action or activity necessary or appropriate to implement its powers or duties to fulfill the objectives of the Historic Preservation Trust Fund.

3. The City Manager, or designee of the City Manager, shall serve as financial administrator of the Historic Preservation Trust Fund and shall be responsible for management of its finances, which shall be carried-out pursuant to all applicable federal, State and local laws.

4. The Planning Director, or designee of the Planning Director, shall serve as program administrator of the Historic Preservation Trust Fund and shall be responsible for its day-to-day management and operations.

D. Historic Preservation Trust Fund Proceeds.

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1. Deposits. All funds received by the City for historic preservation purposes shall be deposited in the Historic Preservation Trust Fund. The City's Fiscal Services Department may establish separate accounts within the Trust Fund for the purpose of separating deposits according to their origin or intended purpose.

2. Grants, Gifts, and Donations. In addition to any public funds appropriated expressly for the purpose of this Subsection, the program administrator may apply for grants, gifts, donations, subventions, rents, royalties, and other financial support, or real or personal property, from private sources, pursuant to City policies. All money received from private sources shall be deposited in a separate account established pursuant to Paragraph D.1 (Deposits), above, and shall be appropriated to the program administrator for expenditures for historic preservation projects pursuant to this Section.

3. Deposit of Proceeds from Any Lease, Rental, Sale, Exchange, or Transfer of Real Property. All proceeds from any lease, rental, sale, exchange, or transfer of real property, or any interest therein or option thereon, shall be deposited in the Historic Preservation Trust Fund, together with any other reimbursements, repayments, and income received by the program administrator.

E. Historic Preservation Trust Fund Program Activities.

1. Properties.

a. Acquisition. Pursuant to State Property Acquisition Law (GC Section 15850, et seq.), the City may acquire, fee title, or any lesser interest, in any real property whose preservation is required to meet the policies and objectives of the City's historic preservation program. The City may accept gifts or dedications of real property and may enter into an option to purchase real property in order to meet the purposes of this provision.

b. Agreements for Preservation and Management. In order to carry out historic preservation projects, the financial administrator may initiate, negotiate, and participate in agreements with public agencies, nonprofit organizations, private entities, or individuals for the preservation and management of historic resources under their control, and enter into any other agreements authorized by state law, as approved by the City Council.

c. Real Property Transactions; Authorization. Notwithstanding any other provision of federal, State or local law, the financial administrator may lease, rent, sell, exchange, or otherwise transfer any real property acquired under this section, or interest therein or option to purchase, provided that the City Council first determines that the action is in the best interests of the City. d. Acquisition, Conservation, Return, and Transfer of Title.

(1) The City Council may acquire any interest in real property pursuant to Paragraph E.1 (Properties) of this Section, with historic (including archaeological) significance, or necessary for the preservation or management of a property, in order to prevent the loss of historic integrity, prevent imminent destruction, or to otherwise secure the preservation of the historical resource.

(2) The program administrator may undertake conservation or preservation activities for historic resources acquired Pursuant to this Section.

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(3) The program administrator shall encourage, to the greatest extent feasible, the acquisition of historic resources by other qualified purchasers.

(4) The City Council shall take all feasible action to return or transfer title to historic resources, to a nonprofit organization, another public agency, private entity, or individual, for all properties acquired for historic resource preservation pursuant to this Section.

2. Loans and Grants. Money in the Historic Preservation Trust Fund shall be available, upon recommendation of the Historic Preservation Commission and appropriation by the City Council, for all loans and grants to public agencies, nonprofit organizations and private entities, to carry out the purposes of this Section.

a. Qualifying Properties. The City Council may award a grant or loan for properties that are designated a local historic landmark or a contributing structure in a designated local historic district, or are listed on the California Register of Historic Resources or the National Register of Historic Places, excepting those projects that are "interpretative," as described in Subparagraph E.3.c (Interpretive Projects) of this Section.

b. Agreements. No loan or grant shall be made except pursuant to an agreement with the City, and subject to terms and conditions approved by the City Council, upon recommendation of the Historic Preservation Commission, which shall ensure that each requested loan or grant carries out the purposes of this Section.

c. Authorization to Contract and Issue Grants or Loans. The financial administrator may, upon City Council approval, enter into contracts and make grants or loans with public agencies, nonprofit organizations, or private entities, to further the purposes of City's historic preservation program, and to carry out activities for this purpose.

d. Matching Funds. All grants and loans should include a cash match for the historic preservation project. Guidelines for determining the amount of required matching funds, if any, shall be adopted by resolution of the City Council. Donated materials and services, staff salaries and organizational overhead costs may be eligible sources of match. The City Council may waive the matching funds requirement.

e. Excess Funds. After completion of a historic preservation project, a grant or loan recipient shall return to the Historic Preservation Trust Fund, the amount of the grant or loan that exceeds the eligible project's costs 3. Qualifying Projects for Competitive Grants and Loans. Competitive Grants and loans are hereby established for the following project types:

a. Construction Projects. Construction projects include the preservation, restoration, exterior rehabilitation, or rehabilitation of the foundation, structural, electrical, or plumbing systems of a historic resource. Qualifying construction projects do not include new additions, routine maintenance such as simple, small-scale activities requiring only minimal skills or training associated with regular (daily, weekly, monthly, etc.) and general upkeep of a property against normal wear and tear), reconstruction, demolition, or relocation;

b. Planning Projects. Planning projects identify, document, and record historic resources according to applicable local, state, and federal standards, and/or contribute to the

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development of the City's historic context, and/or contribute to the development of a Historic Structures Report, Building Conditions Assessment, conservation plan or preservation plan; and

c. Interpretative Projects. Interpretative projects consist of the creation of interpretative media to educate the public on the City's history and/or historic resources.

4. Project Selection Criteria. The award of a grant or loan for a historic preservation project shall be based upon consideration of the following criteria:

a. Level of historic significance of the resource, based upon the Tier

Designation;

b. Level of urgency for the project to avoid the loss of a historic resource;

c. Value of improvement to ensure preservation of the historic resource;

d. Overall benefit to the community through the public's ability to observe and experience the historic resource;

e. Ability to match funds, if required; and

f. Level of professional qualifications for administrating project to demonstrate the ability to successfully complete the project.

5. Qualifying Projects for Emergency Non-Competitive Grants and Loans. In the event that a historic resource is in need of immediate and unanticipated work to prevent its demolition resulting from an unforeseen disaster, such as fire, flood, wind, earthquake or other calamity, the public enemy, or other cause that is beyond the control of the property owner and could not otherwise have been prevented by reasonable care and maintenance of the structure, the City Council may establish a non-competitive emergency grant and/or loan for the following emergency project types, which are not otherwise covered by property owner insurance:

a. Securing, shoring and/or stabilizing a historic resource;

b. Abatement of hazardous health materials and sources which lead to structural deterioration; and

c. Preparing a historic Structure Report and/or Preservation Plan approved by Planning Director.

7.01.040: Preservation Easements

Preservation easements on the facades of buildings designated historic resources may be acquired by the City, or on the City's behalf, by a nonprofit group designated by the City through purchase, donation, or condemnation pursuant to Section CC 815.

7.01.045: Owner's Duty to Keep a Historic Resource in Good Repair

A. Purpose. The purpose of this Section is to ensure the upkeep and maintenance of historic resources within the City by their owner or other responsible party.

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B. Applicability. It shall be the duty of the owner of a historic resource, or any such person responsible for upkeep and maintenance of a historic resource other than the property owner, to keep in good repair, all exterior and interior features of such historic resources, which if not maintained, may cause or tend to cause the exterior features of such resources to deteriorate, decay, become damaged, or fall into a state of disrepair.

C. Protection against Deterioration, Damage, and Decay. The owner of a historic resource, or any such person responsible for upkeep and maintenance of a historic resource other than the property owner, shall preserve such historic resource against deterioration, damage, and decay, and further, shall keep such historic resource free from structural defects through the prompt repair of the below-listed items:

1. Facades that may fall and injure a member of the public or property;

2. Deteriorated or inadequate foundation, defective or deteriorated flooring or floor supports, deteriorated walls, or other vertical structural supports;

3. Members of ceilings, roofs and roof supports, or other horizontal members that age, split, or buckle due to defective material or deterioration;

4. Deteriorated or insufficient waterproofing of exterior walls, roofs, foundations, or floors, including broken windows or doors;

5. Defective or insufficient weather protection for exterior wall covering, including lack of paint, or weathering due to lack of paint or other protective covering; and/or

6. Any fault or defect in the building, which renders the building not properly watertight or structurally unsafe.

D. Failure of Owner to Comply with this Section. A Certificate of Appropriateness shall not be issued for the demolition of a historic resource resulting from failure of the owner to comply with the provisions of this Section.

E. Enforcement of this Section. It shall be the duty of the Building Official to enforce this Section with guidance from the Historic Preservation Commission.

7.01.050: Ordinary Maintenance Repair

Nothing in this Division shall be construed to prevent the ordinary maintenance or repair of any exterior architectural feature within or on any property covered by this Division, which does not involve a change in design, material, or external appearance thereof (refer to Section 7.01.065 (Guidelines for the Treatment of Historic Properties)).

7.01.055: Unsafe or Dangerous Conditions

Nothing contained in this Division shall prohibit the construction, alteration, restoration, demolition, or relocation of any historic resource when such action is required to protect the public safety due to an unsafe or dangerous condition, which cannot be rectified through use of the CHBC. In such case, upon assessment and recommendation by the Building Official, the Planning Director shall

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certify to the Historic Preservation Commission that such condition exists, which shall not require the issuance of a Certificate of Appropriateness.

7.01.060: Enforcement and Penalties

In addition to the requirements of Section 1.02.010 (Enforcement) of this Development Code, the following enforcement and penalty provisions shall apply:

A. Misdemeanor. Anyone violating a requirement of this Division or failing to obey an order issued by the Historic Preservation Commission or Historic Preservation Subcommittee, or comply with a condition of approval of any certificate or permit issued pursuant to this Development Code shall be guilty of a misdemeanor, unless the citing official or the prosecuting attorney determines that it would be in the interests of justice to prosecute the offense as an infraction.

B. Demolition of a Historic Resource in Violation of this Division. Any alteration or demolition (including partial demolition) of a historic resource in violation of this Division is expressly declared to be a nuisance and shall be abated by restoring or reconstructing the property to its original condition prior to the violation. Any person or entity who demolishes or substantially alters or causes substantial alteration or demolition through deferred maintenance of a structure in violation of the provisions of this Division, shall be liable for civil penalties.

C. Temporary Moratorium. Alteration or demolition (including partial demolition) of a historic resource in violation of this Division shall authorize the City to issue a temporary moratorium for the development of the subject property for a period not to exceed 24 months from the date the City becomes aware of the alteration or demolition in violation of this Development Code. The purpose of the moratorium is to provide the City an opportunity to study and determine appropriate mitigation measures for the alteration or removal of the historic structure, and to ensure measures are incorporated into any future development plans and approvals for the subject property. Mitigation measures determined by the Planning Director, Historic Preservation Subcommittee, and/or Historic Preservation Commission, shall be imposed as a condition of any subsequent permit for development of the subject property.

D. Notification of Violation(s) and Assessment of Civil Penalties.

1. The Planning Director shall issue a Notification of Violation and Assessment Civil Penalties to the applicant, property owner, or entity responsible for the property of the alleged violation(s). The Notification of Violation and Assessment Civil Penalties shall include a description of the conditions that gave rise to the violation(s), and the civil penalties to be assessed pursuant to this Section. The notification shall be served by certified mail or may be delivered.

t Civil Penalties to the applicant, property owner, or entity responsible for the property of the alleged violation(s). The Notification of Violation and Assessment Civil Penalties shall include a description of the conditions that gave rise to the violation(s), and the civil penalties to be assessed pursuant to this Section. The notification shall be served by certified mail or may be delivered.

2. In the case of demolition (including partial demolition), the civil penalty to be assessed shall be equal to one-half the assessed value of the historic resource prior to the demolition. The assessed valuation prior to demolition shall be determined using the most recently published International Code Council (ICC) Building Valuation Data. In the case of alteration, the civil penalty shall be equal to one-half the cost of restoration of the altered portion of the historic resource. The cost of restoration shall be determined by the Building Official.

3. Upon payment of civil penalties, building and construction permits, and/or a Certificate of Occupancy, may be issued.

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4. All monies collected pursuant to this Section shall be deposited into the City's Historic Preservation Trust Fund.

E. Appeal of Assessed Civil Penalties.

1. An appeal of a civil penalty may be filed with the Planning Department on a City application form, within 10 days following the date of the Notification of Violation and Assessment Civil Penalties issued pursuant to Paragraph D.1 of this Section. The appeal shall include a statement identifying the specific violation and civil penalty that is being appealed, the specific grounds for the appeal, and the relief requested from the Planning Director.

2. Within 45 days following receipt of an appeal, the Planning Director shall hold a hearing, which is open to the public, to hear and consider objections and/or protest of the alleged violation(s) and assessment of civil penalties stated in the appeal application. The Planning Director shall hear and receive all evidence and testimony relative to the violation(s) and assessment of civil penalties and shall consider all evidence. Within 15 days following conclusion of the hearing, the Planning Director shall render a decision in writing, determining the amount (if any) of civil penalties to be assessed. The decision of the Planning Director shall be final and conclusive in the absence of the filing of an appeal.

3. The Planning Director's decision may be appealed to the City Manager. The appeal shall be filed with the Planning Department on a City application form, within 10 days following issuance of the Planning Director's decision.

4. Within 30 days following receipt of the appeal of the Planning Director's decision, the City Manager shall hold a hearing, which is open to the public, to hear and consider the evidence and reasons not to uphold the Planning Director's decision. Within 15 days following conclusion of the hearing, the City Manager shall render a decision in writing, determining the amount (if any) of civil penalties to be assessed. The decision of the City Manager shall be final and conclusive.

F. Injunctive Relief. The City Attorney may maintain an action for injunctive relief to restrain a violation or cause, where possible, the complete or partial restoration, reconstruction or replacement of any structure demolished, partially demolished, altered, or partially altered in violation of this Division.

7.01.065: Guidelines for the Treatment of Historic Properties

A. In order to ensure that Ontario's historic resources are preserved for future generations, any proposed work on a historic resource shall follow the Secretary of the Interior's Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring and Reconstructing Historic Buildings . The standards were developed by the federal government to be guiding principles regarding the treatment of historic properties.

B. In addition to the Secretary of the Interior's Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring and Reconstructing Historic Buildings , any proposed work on a historic resource shall follow the standards and guidelines set forth by Division 6.01 (District Standards and Guidelines) of this Development Code, and the design guidelines established by Subsection D (Historic Preservation Design Guidelines) of this Section, as applicable.

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C. The design guidelines referenced in this Section shall be enforceable in the same manner and to the same extent as any other provision of this Development Code.

D. The following design guidelines are intended to assist the designer in understanding the City's goals and objectives for the applicable development type. Furthermore, the guidelines are intended to compliment the mandatory development regulations contained in this Development Code by providing examples of potential design solutions and recommendations, and by providing design interpretations of the various mandatory regulations contained herein.

1. Additions.

a. Converting Existing Space. Using existing areas of the structure can provide additional usable square footage. Conversions of basements and attics to habitable space are the most preferred way of adding square footage. Consider introducing dormers to facilitate conversions. Small bays, if strategically spaced and in keeping with the overall design of the house, can accommodate more habitable space while maintaining the integrity of the overall design.

b. New Construction. All new construction shall be consistent with the existing structure. Large additions should be placed at the rear or side of structures to minimize visual impacts. New additions should be handled in one of two ways: [i] seamless additions that form a new dominant building mass consistent with the historic style and uses materials and architectural designs indistinguishable from what exists; and [ii] accented additions that express a new building projection as an additive element, reinforcing the identity of the original building, and is made from compatible, but not necessarily identical materials.

(1) New construction along the front of a building should generally maintain the proportion and arrangement of openings, projections, and other features.

(2) Upper-story additions are discouraged unless they are consistent

with the original design and character of the house style.

(3) The architectural style shall be consistent with the original structure and shall use material similar to those used on the main structure, including siding treatment, windows, doors, trim, roof pitch, etc.

(4) Details on the addition shall match the architectural details on the original structure such as latticework projecting beams, etc.

c. Garages and other Accessory Structures. Garages and other accessory structures shall be consistent with the historic character of the main structure.

(1) The architectural style shall be consistent with the main structure and shall use material similar to those used on the main structure, including siding treatment, windows, doors, trim, roof pitch, etc. (2) Details on the accessory structure shall match the architectural details on the main structure such as latticework, projecting beams, etc.

(3) Garages shall be located to the rear of the property and detached from the main structure.

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2. Architectural Features.

a. Common Features. Traditional buildings and houses have many common features, regardless of the style of architecture.

  • Raised front porch;

  • Massed columns on porch supports;

  • Vertical orientation of windows;

  • Window and door trim;

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Door Examples
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  • Garage door (facing street) treatment (recessed, windows, ornamentation, etc.);

  • Consistency of materials and colors with style of architecture;

  • Detailed porch supports and railings;

  • Dormers;

  • Chimney;

  • Balconies;

  • Window Boxes; and

  • Ornamentation (grill work over windows, tile accents, pop outs, relief bands, etc).

b. Doors. Traditional doors relate to the style of architecture of the building. Shown top right, are examples of door styles.

c. Windows. Traditional windows relate to the style of architecture of the building. Shown bottom right, are examples of window styles.

d. Architectural Styles. Architectural styles should be used for new development that is compatible with the architecture of the neighborhood. Refer to Reference "B" (Architectural Styles Guide) of this Development Code for an architectural styles guide containing a list of architectural styles and some common features found with the style. This list of architectural styles has been developed with the assistance of the California Office of Historic Preservation and these styles are the only styles approved, except where noted, for use with Historic Resource Surveys. The list is based on the following books about California Architecture:

  • The Guide to architecture in San Francisco and Northern California by David Gebhard, Robert Winter and Eric Sandweiss.

  • Guide to the Architecture of Los Angeles and Southern California by David Gebhard and Robert Winter. The list of architectural styles has been revised to include only those styles

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Massed Columns on Porch Support
Window Proportions
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Porch Supports and Railings
Dormer Examples
Window Examples
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either present in Ontario, or those styles, which could be used for infill development. In addition, the descriptive drawings are taken from the following books:

  • A Field Guide to American Houses by Virginia & Lee McAlester; an American Shelter by Lester Walker.

3. Wood Siding and Architectural Details.

a. Preservation. All original wood siding and architectural details should be identified, retained, and preserved. All wall coverings that hide original wood siding and architectural details should be removed.

b. Protection. All causes of wood siding and architectural detail deterioration should be identified, evaluated and treated. Causes may include faulty flashing, leaking gutters, breaks and cracks, open joints, deteriorated caulking and sealants, insect or fungus infestation, and deteriorated coating such as paint or stain.

c. Cleaning. All deteriorated paint or stain should be removed by the gentlest method possible such as hand scraping, hand sanding, hot air heat guns, and chemical strippers. Paint shall not be removed by the propane butane torches, sandblasting, or water blasting. All wood surfaces that have had paint or stain removed shall be given new coatings to protect the wood.

d. Repairs. All deteriorated wood elements that cannot be repaired shall be removed. All removed wood elements shall be replaced with new wood details that match the size, shape and profile of the original element.

4. Concrete Walls.

a. Preservation . All original exterior concrete walls should be identified, retained and preserved. All original finish materials and coatings that have been applied should be identified.

b. Protection. All causes of concrete deterioration should be identified, evaluated and treated. Causes may include exposed steel reinforcing members or metal ties that are rusting, cracked broken concrete, flat surfaces that permit water to penetrate concrete, faulty flashing, and leaking gutters.

c. Cleaning. All concrete walls shall be cleaned with gentle methods that will not damage the plaster finish or concrete surface such as water and detergents applied with natural bristle brushes and low water pressure. After adequate testing, other cleaning methods, such as liquid chemical cleaners, that do not damage the concrete or cause ecological damage, high pressure water, and paint removal strippers may be permitted. Sandblasting is not permitted.

d. Repairs. All rusted steel reinforcing and metal ties shall be removed. All broken and loose concrete shall be removed. All concrete shall be patched using appropriate repair procedures all original finish materials shall be repaired.

e. Replace Missing Concrete Details. All missing or broken concrete details shall be replaced with new details that match the size, shape, color, and texture of the original detail.

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5. Masonry Walls.

a. Preservation. All original exterior masonry walls should be identified, retained, and preserved. All finish materials and coatings that have been applied should be identified.

b. Protection. All causes of concrete deterioration should be identified, evaluated, and treated. Causes may include deteriorated roofs, insufficient drainage, deferred pointing, application of coatings and finish materials, faulty flashing, and leaking gutters.

c. Cleaning. All concrete walls shall be cleaned with gentle methods such water and detergents applied with natural bristle brushes and low water pressure as not to cause damage to the masonry or mortar. After adequate testing, cleaning methods such as liquid chemical cleaners that do not damage the masonry or mortar or cause ecological damage, high pressure water, and paint removal strippers may be permitted. Cleaning methods such as sandblasting, acid wash on limestone and marble, and metal bristle brushes are not permitted. Prior to initiating the work, all cleaning procedures should be tested to ensure that the masonry will not be damaged.

d. Pointing Repair. Deteriorated pointing will be repaired when it is identified. Deteriorated mortar will be removed using hand tools. Power tools shall not be used to remove deteriorated pointing. The new mortar should match the strength of the original. The new mortar should match the color, texture and style of the original mortar. The new pointing shall match the width and profile of the original.

e. Repairing the Masonry. Masonry units shall be replaced with new masonry units that match the size, texture and color of the original material. Broken masonry units should be patch rather than replaced.

f. Replacing Masonry. All missing or broken masonry units that cannot be repaired shall be replace with masonry units that match the size, shape, color and texture of the original detail.

6. Architectural Metals.

a. Preservation. All original metal architectural features should be identified, retained and preserved. Metal architectural features which are important in defining the historic character of the building shall not be removed.

b. Protection. All causes of metal corrosion should be identified, evaluated and treated. Causes may include exposing bare metal to water and moisture, deterioration of protective coatings, and galvanic action between two incompatible metals.

c. Cleaning Non Ferrous Materials and Alloys. The type of metal material shall be identified in order to determine the type of cleaning to be used. Non-ferrous metals (lead, tin, copper, zinc) whose natural patina should be preserved shall be identified. Non-ferrous materials with a natural patina shall have cleaned using gentle methods used in order to clean the surface without damaging the patina or coating. Alloys that may require protective coatings shall be identified. A gentle cleaning method that will not abrade the protective coating shall be used.

d. Cleaning Ferrous Metals. The type of ferrous material (cast iron, wrought iron, steel) shall be identified. The type of coating and condition of metal shall be determined.

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Hand scraping shall be used to remove corrosion and deteriorated paint. Low pressure grit blasting may be used to remove corrosion and coatings when hand scraping is ineffective. Cleaned ferrous metals should be painted immediately with a corrosive resistant coating.

e. Repair. Metal features that are broken or dented shall be repaired. Metal features that are broken or dented shall not be replaced.

f. Replacement. Metal features that are too deteriorated to be repaired should be replaced. The original metal feature shall be used as a model for the new feature. Missing features shall not be replaced with details that do not convey the same visual appearance.

7. Exterior Plaster (Stucco).

a. Preservation. All original exterior plaster features should be identified, retained and preserved. Original exterior plaster features that are important in defining the overall historic character of the building shall not be removed.

b. Protection. All causes of plaster deterioration should be identified, evaluated and treated. Causes may include leaking roofs, faulty flashing, leaking gutters, broken concrete substrate, deteriorated or rusted metal lath, and deteriorated wood members.

c. Cleaning. All plaster shall be cleaned with gentle methods that will not damage the plaster. Use water and detergent with a soft natural bristle brush. Cleaning methods such as sandblasting or high pressure water are not permitted. d. Repairs. All types of deterioration shall be identified such as spalling, broken, or cracked plaster and missing plaster details. All deteriorated substrate material shall be removed. All plaster shall be patched using industry approved repair procedures and materials. Where a large area of plaster needs to be replaced, the adjacent panel should be completely replaced in order to avoid a patched appearance.

8. Roofs.

a. Preservation. All original character defining features of the roof should be identified, retained and preserved. Features include shape, slope, roofing materials, and decorative details. The original defining features that have been removed or altered should be identified. The character defining features of the roof shall not be altered. Sound character defining features of the roof shall not be removed.

ion._ All original character defining features of the roof should be identified, retained and preserved. Features include shape, slope, roofing materials, and decorative details. The original defining features that have been removed or altered should be identified. The character defining features of the roof shall not be altered. Sound character defining features of the roof shall not be removed.

b. Protection. All causes of roof deterioration should be identified, evaluated and treated. Causes may include blocked drains and gutters, moisture condensation, faulty flashing, overhanging tree limbs, insect and fungus infestation, deteriorated roofing material, faulty application of roof fasteners, and deteriorated fasteners.

c. Repairs. All features shall be repaired with similar materials.

d. Replacement. All features that are not repairable shall be replaced. The deteriorated elements of the roof should be replaced with new material that preserves the overall shape and slope of the roof. Materials that do not convey the visual appearance of the original roof shall not be used.

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e. Additions to Buildings. Roofs over additions should retain the character defining features of the original roof.

f. Additions to Original Roofs. Mechanical or solar collection should be installed do that they are not visible from the public right of way. Unless an original decorative feature on a house, downspouts should be located in an inconspicuous place, such as the corner, side or back of a building.

9. Doors.

a. Preservation. All original character defining features of doors should be identified, retained and preserved. Features include frames, jambs, door, transoms, sills, trim, screen door, and fan lights and sidelights. Doors that are important in defining the overall historic character of the building shall not be removed or radically changed. The pattern of the door shall not be changed. The historic appearance of doors through the use of inappropriate design, materials, finishes or color shall not be changed. Original fittings on doors shall not be stripped.

b. Protection. All causes of deterioration should be identified, evaluated and treated. Causes may include weathering due to paint deterioration, rusting due to paint deterioration, and sealant and caulking deterioration.

c. Repairs. Original broken door detail should be repaired. When repair of material or missing parts is appropriate, the entire door shall not be replaced.

d. Replacement. When a door can no longer be repaired, or is missing, replace it with a new door that matches the original. Character defining doors should not be replaced with new doors that do not convey the same visual appearance of the original. e. Doors in Additions to the Original Buildings. New doors in additions to the original buildings should be compatible with the overall design of the original building, but not duplicate the pattern of the original door.

10. Windows.

a. Preservation. All original character defining features of windows should be identified, retained and preserved. Features include frames, heads, sills, trim, jambs, muntins, shutters, awnings, sash, glazing, blinds, and screens. Windows that are important in defining the overall historic character of the building shall not be removed or radically changed. The number, location, size or glazing pattern of windows shall not be changed. The historic appearance of windows through the use of inappropriate design, materials, finishes or color shall not be changed. Window trim should not be obscured with other materials. Original fittings on windows shall not be stripped.

b. Protection. All causes of deterioration should be identified, evaluated, and treated. Causes may include water penetration, weathering due to paint deterioration, rusting due to paint deterioration, and sealant and caulking deterioration.

c. Repairs. Original broken window features should be repaired. When repair of material or missing parts is appropriate, entire windows shall not be replaced.

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d. Replacement. When a window can no longer be repaired, or is missing, replace it with a new window that matches the original. Character defining windows should not be replaced with new windows that do not convey the same visual appearance of the original.

e. Windows in Additions to the Original Buildings. New windows in additions to the original buildings should be compatible with the overall design of the original building, but not duplicate the fenestration pattern and detailing of the original window.

11. Entrances and Porches.

a. Preservation. All original entrance or porch, including doors, entablatures, columns, balustrades, and stairs should be identified, retained and preserved. If replacement is necessary, the proportion and composition of original design should be retained, preferably by using traditional moldings and balusters. An entrance or porch shall not be removed in order to reorient the building for a new use. Columns and railings for porches, stoops and front steps should be substantial looking and not be replaced with pipes, wrought iron or "ranch-style" members. Brick stairs are rarely appropriate; wood stairs are most appropriate to Late Victorian and Classical Revival houses. New entrances shall not be cut into the primary façade. Utilitarian or service entrances shall not be altered so they appear to be the formal entrance.

b. Protection. All causes of deterioration should be identified, evaluated, and treated. Causes may include water penetration, weathering due to paint deterioration, rusting due to paint deterioration, and sealant and caulking deterioration.

c. Repairs. The historic materials used in the character defining features should be repaired. Original materials should be used for repairs or substitute materials that are compatible. Substitute materials or features that do not convey the visual appearance of the original features shall not be used. d. Replacement. When an entrance or porch can no longer be repaired, or is missing, replace it with a new entrance or porch that conveys the same visual appearance. e. A New Entrance or Porch on Additions to the Original Building. A new entrance or porch should be designed to be compatible to the original buildings.

12. Storefronts.

a. Preservation. All original storefront should be identified, retained, and preserved. Store front features include bulkhead, window frames, door transom, recessed ceiling, lighting, wall material, display window, entry door, awnings, recessed paving, and parapets. The original features of the storefront shall not be removed. The location of the storefront main entrance shall not be changed. The original configuration of the storefront shall not be altered. Inappropriate materials shall not be added over original ones.

b. Protection. All causes of deterioration on the storefront should be identified, evaluated, and treated. Causes may include, water penetration, weathering due to paint deterioration, rusting due to paint deterioration, and sealant and caulking deterioration. Historic materials shall not be stripped from the storefront.

c. Repairs. The historic materials used in the character defining features of the storefront should be repaired. Original Materials or substitute materials that are compatible should

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be used for repair. Materials or features that do not convey the visual appearance of the original features should not be substituted.

d. Replacement. If there is insufficient information about the original appearance of the storefront, it should be rebuilt using a new design whose size, scale, style, detail, and color are compatible with the original appearance. When a storefront can no longer be repaired, or is missing, replace it with a reconstructed storefront based on the available historical, pictorial and physical documentation available. A new design that is incompatible in size, scale, material, style and color with the original appearance is not allowed.

13. Significant Interior Space Features and Finishes.

a. Preservation of Interior Spaces. A floor plan or significant interior spaces that are important in defining the overall historic character of the building should be identified, retained, and preserved. Elements to be considered of the interior space are size, proportions, configuration, relationship of rooms, individual room or space, and relationship of features to spaces or rooms. The floor plan or significant interior spaces that are important in defining the overall historic character of the building shall not be radically changed. Interior space should not be altered or destroyed by inserting floors, cutting through floors, lowering ceilings, or adding or removing walls. A feature should not be relocated so that a historic relationship between the feature and the space is altered.

b. Preservation of Interior Features and Finishes. Interior features and finishes that are important in defining the overall historic character of the building should be identified, retained and preserved and shall not be removed or radically changed. New features or finishes that obscure the character defining features of the building should not be applied.

c. Protection. All causes of deterioration should be identified, evaluated, and treated. Causes include surface dirt, moisture penetration from the exterior, insect and fungus infestation, excessive moist or dry air, vandalism, improper cleaning procedures, and excessive use. The original features and finishes should be protected from inappropriate changes: removal of original features, replacement of original features, repainting of original finishes, and introduction of new mechanical, plumbing and electrical systems that cause damage when they are installed.

d. Repairs. Deteriorated features or finishes should be repaired using the same or compatible materials. Do not make repairs with incompatible materials.

e. Replacement. Un-repairable features or finishes should be replaced with new features or finishes that match the original. Features or finishes should not be replaced with new features or finishes that do not convey the same visual appearance of the original.

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Chapter 8.0: Si n Re ulations g g

Division 8.01—Sign Regulations

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