Earlier editions: 2026-07
Title 14 — Building and Construction
Cotati Municipal Code Ch. 14.04 Uniform Codes
Cotati Municipal Code · 2026-10 edition · updated 2026-10-04 · Cotati
Cite as: Cotati Municipal Code Chapter 14.04 · Text as of 2026-10-04
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Prior ordinance history: Ords. 455, 712, 750, 815, 829, 843, 864 and 887.
§ 14.04.010. Adoption of codes by reference.¶
The uniform codes and the international codes together with any amendments thereof, as hereinafter set forth in this chapter, are adopted and made part of this chapter, together with amendments and additions to the various codes; providing penalties for the violation thereof and repealing all ordinances in conflict therewith.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.020. Copies on file.¶
One certified copy of each of the codes so adopted, along with any amendment thereto, shall be kept on file for the use and examination by the public at the city of Cotati Community Development Department.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.025. Findings.¶
The City Council of the City of Cotati finds that in order to best protect the health, safety and welfare of its citizens, the standards of building within the City must conform to state law except where local conditions warrant more restrictive regulations. Therefore, the City Council desires to adopt the current state building and fire codes, contained in California Code of Regulations, Title 24, governing the construction and regulation of buildings and structures, along with the International Property Maintenance Code, with the modifications and amendments contained herein.
Pursuant to Cal. Health & Safety Code § 17958.7, the City Council makes the factual findings hereto and incorporated herein by reference, and finds that the amendments made in this chapter to the California Code of Regulations, Title 24, are reasonably necessary because of the local climatic, geological or topographical conditions described in the following.
The City wishes to adopt by reference the following codes, with such amendments as may be necessary to conform to local climatic, geologic, and topographical conditions and number the adopted codes in the City of Cotati Municipal Code:
California Code of Regulations Title 24
| 14.04.030 | Part 1 – 2025 Administrative Code; |
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| 14.04.040 | Part 2 – 2025 California Building Code; |
| 14.04.050 | Part 2.5 – 2025 California Residential Code; |
| 14.04.060 | Part 3 – 2025 California Electrical Code; |
| 14.04.070 | Part 4 – 2025 California Mechanical Code; |
| 14.04.080 | Part 5 – 2025 California Plumbing Code; |
| 14.04.090 | Part 6 – 2025 California Energy Code; |
| 14.04.100 | Part 8 – 2025 California Historical Building Code; |
| 14.04.110 | Part 9 – 2025 California Fire Code; |
| 14.04.120 | Part 10 – 2025 California Existing Building Code; |
| 14.04.130 | Part 11 – 2025 California Green Building Standards Code; |
| 14.04.140 | Part 12 – 2025 California Referenced Standards Code; |
| 14.04.150 | 2024 Edition International Property Maintenance Code; |
| 14.04.160 | 2025 National Fire Code; |
| 14.04.180 | Non-Liability of City of Cotati; |
| 14.04.190 | Repeal of Conflicting Ordinances; |
| 14.04.200 | Violations and Penalties; |
| 14.04.210 | Fees. |
Under the provisions of Cal. Health & Safety Code § 17958.5, local amendments must be based on climatic, geologic and topographical conditions. The following findings address each of these situations and present the local conditions which, either singularly or in combination, justify the amendments to be adopted:
A. Climate. The City, on average, experiences an approximate annual rainfall of 40 inches. This rainfall can normally be expected between October and April. During the winter months, the City may experience periods of heavy rain, which causes local flooding. Winter storms are often accompanied by high winds, which have uprooted trees and damaged power lines. The City has also experienced periods of heavy fog, which has delayed the responding fire apparatus and prevented early discovery of structure fires. During the dry period, temperatures range from 70 degrees to over 100 degrees. These temperatures are occasionally accompanied by light to gusty winds, which when coupled with highly flammable vegetation can cause uncontrollable fires. Wind driven fires could have severe consequences, as has been demonstrated on several occasions throughout the local region and state.
B. Geologic. The City is susceptible to seismic hazards resulting from movement along any one of several known faults in the area. The most serious direct earthquake hazard threat is from the damage or collapse of buildings and other structures due to ground movement. In addition to damage caused by earthquakes, there is the possibility of earthquake-induced fires due to damaged gas lines, power lines or heat producing appliances, and the unavailability of water for fire control due to broken water mains. In the event of a major earthquake many areas of the City may not be accessible to emergency equipment and, if bridges or roads are damaged, the City may be isolated from outside assistance.
C. Topographical. The City is divided by Highway 101 which creates a barrier and can obstruct traffic patterns and increase response time for fire equipment. The City's water supply and sewer system were both designed to work with existing topography but can be adversely affected by loss of normal operation. Sewer lift stations and well equipment can both be compromised by interruption in electrical service.
D. Summary. The above local climatic, geologic and topographical conditions increase the magnitude, exposure, accessibility problems and fire hazards presented to the City of Cotati. A fire following an earthquake has the potential to cause greater loss of life and damage than the earthquake itself. The majority of the City's industrial areas are located in the highest seismic risk zones, which also contain the largest concentration of hazardous materials. Hazardous materials, primarily toxic gases, could pose the greatest threat to the largest number of persons, should a significant seismic event occur. The City of Cotati's resources would have to be prioritized to mitigate the greatest threat, and may be unavailable for vegetation or structure fires.
Other variables that may tend to intensify the situation include:
The extent of damage to the water system;
The extent of isolation due to bridge and/or freeway overpass collapse;
The extent of roadway damage and/or amount of debris blocking roadways;
Climatic conditions (hot, dry weather with high winds);
Time of day will influence the amount of traffic on roadways and could intensify the risk to life during normal business hours; and
The availability of timely mutual aid or assistance from the neighboring departments which will likely have similar emergencies at the same time;
A large number of dwelling units with wood shingle roof coverings, which increase the likelihood of conflagrations.
E. Conclusion. Local climatic, geologic and topographical conditions impact fire suppression efforts and the frequency, spread, intensity, and the size of fire involving structures in this community. Further, they impact potential damage to all structures from earthquake and subsequent fire. Therefore, it is found to be necessary that the California Building Standard Code Title 24 be amended to mitigate the effects of these conditions.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.030. California Administrative Code.¶
Adoption of the California Code of Regulations Title 24, Part 1: California Administrative Code, 2025 Edition, as published by the International Code Council.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.040. California Building Code.¶
Adoption of the California Code of Regulations Title 24, Part 2: California Building Code, Volumes 1 and 2, 2025 Edition, based upon the 2024 International Building Code, Volumes 1 and 2 thereof, as published by the International Code Council with the following amendments:
Appendix Chapter H, Signs, of the California Building Code, 2025 Edition, is hereby adopted with the following amendments:
Section H101.2 Signs exempt from permits. 1 and 4 are deleted.
Appendix Chapter I, Patio Covers, of the California Building Code, 2025 Edition, is hereby adopted.
Appendix Chapter J, Grading, of the California Building Code, 2025 Edition, is hereby adopted.
Appendix Chapter Q, Emergency Housing, of the California Building Code, 2025 Edition, is hereby adopted.
The existing sections of Section 14.04.040 of the City of Cotati Municipal Code that are not expressly deleted, repealed or amended by the ordinance codified in this chapter are hereby readopted without change, and shall apply, as applicable, to the model codes herein adopted.
California Building Code Section 105.2, Work exempt from permit, Building 1, shall be amended to read as follows:
| Section 105.2, Building 1 One-story detached accessory buildings used as tool and storage sheds, playhouses, and similar uses, provided the floor area does not exceed 120 square feet, (11 m 2 ). The height of the one story detached accessory building shall not exceed 12 feet at any point or as specified by local zoning ordinance. |
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California Building Code Section 105.2, Work exempt from permit, Building 6, shall be amended to read as follows:
| Section 105.2, Building 6, Platforms, sidewalks, and driveways not more than 30 inches (762 mm) above adjacent grade, not over any basement or story below and are not part of an accessible route. |
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California Building Code Section 105.3.2, Time Limitation of application, is amended to read as follows:
| 105.3.2, Time Limitation of application, A building permit application and plan review shall expire if the application is deemed to have been abandoned, the application has not been pursued in good faith, or no permit is issued within one year (365 days) of the date the application is filed. The construction plans and support documents submitted for review may thereafter be returned to the applicant or destroyed by the Building Official. The Building Official may extend the time for action by the applicant for a period of 180 days upon written request by the applicant showing that circumstances beyond the full control of the applicant have prevented any action from being taken. In the event that the applicant is diligently pursuing permit issuance and there have been no updates to the State of California adopted building codes or expiration of any other applicable City required permit since the time of initial submittal of the building permit application, the Building Official may extend the application an additional 180 days. Fees for extension of permit applications and plan review shall be in the amounts fixed by resolution of the City Council. In order to renew action on an application after expiration, the applicant shall reapply for the building permit, resubmit construction plans and supporting documents and pay a new plan review fee. |
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California Building Code Section 105.5 Expiration is amended to read as follows:
| 105.5, Expiration. Every permit issued shall become invalid and shall be expired unless the work authorized by such permit is commenced within 365 days after its issuance, or if the work authorized by such permit is suspended or abandoned for a period of 365 days after the time the work is commenced. The Building Official may extend the time for action by the applicant for a period of 180 days upon a request by the applicant, in writing, showing that circumstances beyond the full control of the applicant have prevented any action from being taken. In the event that the applicant is diligently pursuing completion of work authorized by the permit the Building Official may extend the issued building permit an additional 180 days. Fees for extension of permit applications and issued permits shall be in the amounts fixed by resolution of the City Council. A request for permit extension may not be granted for an issued building permit if no work has begun or no inspections have been approved within three years of the date the permit was issued. The construction plans and support documents submitted may thereafter be destroyed by the Building Official. In order to renew action on a permit after expiration, the applicant shall reapply for the building permit, resubmit construction plans and support documents and pay a new plan review fee. |
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California Building Code Section 109.3, Building permit valuation, is amended to read as follows:
| 109.3 Building permit valuation. The applicant for a permit shall provide an estimated permit value at time of application. Permit valuations shall include total value of work, including materials and labor, for which the permit is being issued, such as electrical, gas, mechanical, plumbing equipment and permanent systems. If, in the opinion of the building official, the valuation is underestimated on the application, the permit shall be denied, unless the applicant can show detailed estimates to meet the approval of the building official. The valuation for a permit may be determined or modified by the building official as necessary using the latest Building Valuation Data with a X2 multiplier published by the International Code Council in Building Standards Safety Journal and other relevant data as necessary. |
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California Building Code Section 202, Definitions, is amended to add the following definitions:
| SUBSTANTIAL ADDITION. An existing building or structure not classified as Group R-3 occupancy, which undergoes any addition of floor area that is greater than twenty-five percent (25%) of the existing gross floor area. |
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| SUBSTANTIAL ADDITION, Group R-3. An existing Group R-3 building or structure, which undergoes any addition of floor area that exceeds fifty percent (50%) of the existing gross floor area. |
| SUBSTANTIAL REMODEL. An existing building or structure, which undergoes any alteration of floor area that is greater than fifty percent (50%) of the existing gross floor area or meets the definition of a substantial improvement as defined by this code. |
California Building Code Section 502.1, Address identification, is amended to read as follows:
| Section 502.1 Address identification. New and existing buildings shall be provided with approved illuminated or other approved means of address identification. The address identification shall be legible and placed in a position that is visible from the street or road fronting the property. Address identification characters shall contrast with their background. Address numbers shall be Arabic numerals or alphabetic letters. Numbers shall not be spelled out. Character size and stroke shall be in accordance with Section 505.1.1 through 505.1.2. Where required by the Fire Code Official, address identification shall be provided in additional approved locations to facilitate emergency response in accordance with this code and Section 505.1.3. Where access is by means of a private road and the building cannot be viewed from the public way or when determined by the Fire Code Official, a monument, pole, or other approved illuminated sign or other approved means shall be used to identify the structure. Address identification shall be maintained. |
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California Building Code Section 502.1.2 is added to read as follows:
| Section 502.1.2 Numbers for other than one- and two-family dwellings. Each address identification character shall be not less than twelve (12) inches high with a minimum stroke width of one (1) inch. Suite and unit directional numbers shall be not less than six (6) inches high with a minimum stroke width of three-quarter (0.75) inch. Numbers shall be not less than four (4) inches high with a minimum stroke width of one-half (0.5) inch. |
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California Building Code Section 502.1.3 is added to read as follows:
| Section 502.1.3 Complex directory. Where two or more buildings cannot be viewed from the public way or when determined by the Building or Fire Code Official, an approved illuminated complex directory, monument, pole, or other approved sign or means shall be used to identify the structures at the main entrances to the property. |
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All sections of the City of Cotati Municipal Code for California Building Code Sections 903.2.1 through Section 905.9 are deleted.
California Building Code Section 903.6 is amended to read as follows:
| Section 903.6 Where Required in Existing Buildings and Structures. An automatic sprinkler system shall be provided throughout existing buildings and structures where required in Chapter 11 or that undergo a substantial improvement as defined by CBC Chapter 2 in accordance with Table 903.6. |
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| Exception: Alterations made solely for the purpose of providing barrier removal pursuant to the requirements of the Americans with Disabilities Act (ADA) as contained in exception # 4 of Section 11B-204.2. |
California Building Code Section 905.3.1 is amended to read as follows:
| Section 905.3.1, Height. In other than Group R-3 and R-3.1 occupancies, Class III standpipe systems shall be installed throughout at each floor where any of the following occur: |
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| 1. Buildings where the floor level of the highest story is located more than 30 feet (9144 mm) above the lowest level of fire department vehicle access. |
| 2. Buildings that are three or more stories in height. |
| 3. Buildings where the floor level of the lowest story is located more than 30 feet (9144 mm) below the highest level of fire department access. |
| 4. Buildings that are two or more stories below the highest level of fire department vehicle access. |
| Exceptions: |
| 1. Class I standpipes are allowed in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2. |
| 2. Class I standpipes are allowed in B and E occupancies. |
| 3. Class I standpipes are allowed in parking garages. |
| 4. Class 1 standpipes are allowed in basements equipped throughout with an automatic sprinkler system. |
| 5. Class I standpipes are allowed in buildings where occupant-use hose lines will not be utilized by trained personnel or the fire department. |
| 6 In determining the lowest level of fire department vehicle access, it shall not be required to consider either of the following: |
| 6.1 Recessed loading docks for four vehicles or less. |
| 6.2 Conditions where topography makes access from the fire department vehicle to the building impractical or impossible. |
| 7 When determined by the Fire Code Official a standpipe system is not warranted in three-story buildings. |
California Building Code Section 3103.1.2, Temporary Structures, Permit required, is amended to read as follows:
| 18-16-3103.1.2 Permit Required. Temporary structures that cover an area greater than 400 square feet (11.16 m 2 ), including connecting areas or spaces with a common means of egress or entrance that are used or intended to use for the gathering together of 10 or more persons, shall not be erected, operated or maintained for any purpose without obtaining a permit from the building official. |
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California Building Code Section 3306.5.2 is amended to read:
| 3306.5.2 Where Required. In buildings of combustible construction required to have automatic sprinkler system by Section 903, automatic sprinkler system shall be installed prior to construction exceeding 40 feet (12,192 mm) in height above the lowest level of fire department vehicle access. Such automatic sprinkler system shall be extended as construction progresses to within one floor of the highest point of construction having secured decking or flooring. |
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California Building Code Section 3306.5.3 is added to read as follows:
| 3306.5.3 Buildings being demolished. Where a building is being demolished and an automatic sprinkler system is existing within such a building, such automatic sprinkler system shall be maintained in an operable condition so as to be available for use by the fire department. Such automatic sprinkler system shall be demolished with the building but shall not be demolished more than one floor below the floor being demolished. |
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Appendix Chapter J of the California Building Code, 2025 Edition, is hereby adopted with the following amendments:
| A. Insofar as they apply to the permitting of work regulated by this Ordinance, the Organization and Enforcement of this Ordinance shall be as set forth in Section 104 Chapter 1 of the California Building Code, 2025 Edition, with the exception that the City Engineer shall be the designated code enforcement officer and shall have all the powers and duties ascribed to the building official therein. |
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| B. All references in Appendix Chapter J to the Building Official are hereby amended to refer to the City Engineer. |
| C. Notwithstanding A. and B. above, demolition permits shall remain under the authority of the Building Official. |
| D. Appendix Chapter J, Section J 103, is hereby amended to include the Grading Permit Application Requirements adopted by a separate resolution of the City Council. In the case of any discrepancies between the provisions of this Ordinance including the Code sections adopted by reference herein, and the Grading Permit Application Requirements, the latter shall supersede. |
With respect to the activities regulated by this Ordinance (i.e., Excavation, Grading and Earthwork Construction), CBC Section 113 (incorporated herein by reference) is hereby amended to include the following language:
| The Cotati City Council (or their designee) is hereby designated as the board of appeals for activities regulated by this Ordinance. |
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(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.050. California Residential Code.¶
Adoption of California Code of Regulations Title 24, Part 2.5: California Residential Code, 2025 Edition, as published by the International Conference of Building Officials, with the following amendments:
Appendix Chapter BB, Tiny Houses, of the California Residential Code, 2025 Edition is hereby adopted.
Appendix Chapter BF, Patio Covers, of the California Residential Code, 2025 Edition, is hereby adopted.
Appendix Chapter BG, Sound Transmission, of the California Residential Code, 2025 Edition, is hereby adopted.
Appendix Chapter BO, Existing Buildings and Structures, of the California Residential Code, 2025 Edition, is hereby adopted.
Appendix Chapter CI, Swimming Pool Safety Act, of the California Residential Code, 2025 Edition, is hereby adopted.
The existing sections of Section 14.04.050 of the City of Cotati Municipal Code that are not expressly deleted, repealed or amended by the ordinance codified in this chapter are hereby readopted without change, and shall apply, as applicable, to the model codes herein adopted.
Division II Administration.
California Residential Code Section R105.2, Work exempt from permit, exception 1, is amended to read as follows:
| R105.2, exception 1. One-story detached accessory buildings used as tool and storage sheds, playhouses, and similar uses, provided the floor area does not exceed 120 square feet, (11 m 2 ). The height of the one story detached accessory building shall not exceed 12 feet at any point or as specified by local zoning ordinance. |
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California Residential Code Section R105.2, exception 10, is amended to read as follows:
| R105.2, exception 10. Platforms, and decks not more than 30 inches (762 mm) above adjacent grade at any point, are not attached to a dwelling and do not serve the exit door required by Section R311. |
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California Residential Code Section R105.3.2, Time limitation of application, is amended to read as follows:
| R105.3.2 Time limitation of application. A building permit application and plan review shall expire if the application is deemed to have been abandoned, the application has not been pursued in good faith, or no permit is issued within one year of the date the application is filed. The construction plans and support documents submitted for review may thereafter be returned to the applicant or destroyed by the Building Official. The Building Official may extend the time for action by the applicant for a period of 180 days upon written request by the applicant showing that circumstances beyond the full control of the applicant have prevented any action from being taken. In the event that the applicant is diligently pursuing permit issuance and there have been no updates to the State of California adopted building codes or expiration of any other applicable City required permit since the time of initial submittal of the building permit application, the Building Official may extend the application an additional 180 days. Fees for extension of permit applications and plan review shall be in the amounts fixed by resolution of the City Council. In order to renew action on an application after expiration, the applicant shall reapply for the building permit, resubmit construction plans and support documents and pay a new plan review fee. |
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California Residential Code Section R105.5, Permits – Expiration, is amended to read as follows:
| R105.5 Expiration. Every permit issued shall become invalid and shall be expired unless the work authorized by such permit is commenced within 365 days after its issuance, or if the work authorized by such permit is suspended or abandoned for a period of 365 days after the time the work is commenced. The Building Official may extend the time for action by the applicant for a period of 180 days upon a request by the applicant, in writing, showing that circumstances beyond the full control of the applicant have prevented any action from being taken. In the event that the applicant is diligently pursuing completion of work authorized by the permit the Building Official may extend the issued building permit an additional 180 days. Fees for extension of permit applications and issued permits shall be in the amounts fixed by resolution of the City Council. A request for permit extension may not be granted for an issued building permit if no work has begun or no inspections have been approved within three years of the date the permit was issued. The construction plans and support documents submitted may thereafter be destroyed by the Building Official. In order to renew action on a permit after expiration, the applicant shall reapply for the building permit, resubmit construction plans and support documents and pay a new plan review fee. |
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California Residential Code Section R108.3, Building permit valuation, is amended to read as follows:
| R108.3 Building permit valuation. The applicant for a permit shall provide an estimated permit value at time of application. Permit valuations shall include total value of work, including materials and labor, for which the permit is being issued, such as electrical, gas, mechanical, plumbing equipment and permanent systems. If, in the opinion of the building official, the valuation is underestimated on the application, the permit shall be denied, unless the applicant can show detailed estimates to meet the approval of the building official. The valuation for a permit may be determined or modified by the building official as necessary using the latest Building Valuation Data with a X2 multiplier published by the International Code Council in Building Standards Safety Journal and other relevant data as necessary. |
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California Residential Code Section R108.6, Work commencing before permit issuance, is amended to read as follows:
| R108.6 Work commencing before permit issuance. Any person who commences any work on a building, structure, electrical, gas, mechanical or plumbing system before obtaining the necessary permits shall be subject to a fee established by the building official that shall be in addition to the required permit fees. An investigation fee, in addition to the permit fee, may be collected whether or not a permit is then or subsequently issued. The minimum investigation fee is set forth in the fee schedule adopted by this jurisdiction. The payment of such investigation fee shall not exempt any person from compliance with all other provisions of this code nor from any penalty prescribed by law. |
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California Residential Code Section R202, Definitions, is amended to add the following definitions:
| SUBSTANTIAL ADDITION. An existing Group R-3 (one and two family dwelling) building or structure, which undergoes any addition of floor area that exceeds fifty percent (50%) of the existing gross floor area. |
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| SUBSTANTIAL REMODEL. An existing building or structure, which undergoes any alteration of floor area that is greater than fifty percent (50%) of the existing gross floor area or meets the definition of a substantial improvement as defined by this code. |
Section R313 Automatic Fire Sprinkler Systems.
California Residential Code Section R313.1, Townhouse automatic fire sprinkler systems, is amended to read as follows:
| R313.1 Townhouse automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed throughout all townhouses regardless of square footage in accordance with this code. Fire Sprinklers shall be installed in all manufactured homes dwelling units in accordance with Title 25 of the California Code of Regulations. |
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| Exceptions: |
| 1. Detached Group U occupancies 1,000 sq. ft. or less. |
| 2. Detached pool houses up to 1,000 sq. ft. in floor area within 50 feet of the pool and limited to a single bathroom. |
| 3. A room above a detached garage used for storage only that does not contain a bathroom, cooking or refrigeration facilities or connections for such facilities. |
| 4. Carports of non-combustible construction. |
California Residential Code Section R313.1.2, Substantial remodel, is added to read as follows:
| R313.1.2 Substantial remodel. An automatic sprinkler system shall be provided throughout all townhomes that undergo a substantial remodel or substantial improvement. |
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| Exception: Alterations made solely for the purpose of complying with the American Disabilities Act. |
California Residential Code Section R313.1.3, Substantial addition, is added to read as follows:
| R313.1.3 Substantial addition. An automatic sprinkler system shall be provided throughout all townhomes that undergo a substantial addition. |
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California Residential Code Section R313.1.4, Substantial alterations, is added to read as follows:
| R313.1.4 Substantial alterations. An automatic sprinkler system shall be provided throughout all townhomes that undergo any combination of substantial remodel, substantial addition or both that equals fifty percent (50%) of the existing gross floor area. The percentage of work shall be determined and added to any successive remodels that may occur within a subsequent three (3) year period. If the combined percentage totals 50% or more, this work shall constitute a substantial improvement and the building shall be subject to the fire sprinkler requirement. |
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California Residential Code Section R313.2, One- and two-family dwellings automatic fire sprinkler systems, is amended to read as follows:
| R313.2 One- and two-family dwellings automatic fire sprinkler systems. An automatic sprinkler system shall be installed throughout all one- and two-family dwellings regardless of square footage in accordance with this code. Fire Sprinklers shall be installed in mobile homes, manufactured homes and multi-family manufactured homes with two dwelling units in accordance with Title 25 of the California Code of Regulations. |
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| Exceptions: |
| 1. Detached Group U occupancies 1,000 sq. ft. or less. |
| 2. Detached pool houses up to 1,000 sq. ft. in floor area within 50 feet of the pool and limited to a single bathroom. |
| 3. A room above a detached garage used for storage only that does not contain a bathroom, cooking or refrigeration facilities or connections for such facilities. |
| 4. Carports of non-combustible construction. |
California Residential Code Section R313.2.2, Substantial remodel, is added to read as follows:
| R313.2.2 Substantial remodel. An automatic sprinkler system shall be provided throughout all one- and two-family dwellings that undergo a substantial remodel or substantial improvement. |
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| Exception: Alterations made solely for the purpose of complying with the American Disabilities Act. |
California Residential Code Section R313.2.3, Substantial addition, is added to read as follows:
| R313.2.3 Substantial addition. An automatic sprinkler system shall be provided throughout all one- and two-family dwellings that undergo a substantial addition. |
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California Residential Code Section R313.2.4, Substantial alterations, is added to read as follows:
| R313.2.4 Substantial alterations. An automatic sprinkler system shall be provided throughout all one- and two-family dwellings that undergo any combination of substantial remodel, addition or both that equals fifty percent (50%) of the existing gross floor area. The percentage of work shall be determined and added to any successive remodels that may occur within a subsequent three (3) year period. If the combined percentage totals 50% or more, this work shall constitute a substantial improvement and the building shall be subject to the fire sprinkler requirement. |
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(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.060. California Electrical Code.¶
Adoption of the California Code of Regulations Title 24, Part 3: The California Electrical Code, 2025 Edition, as published by the National Fire Protection Association.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.070. California Mechanical Code.¶
Adoption of the California Code of Regulations Title 24, Part 4: The California Mechanical Code, 2025 Edition, as published by the International Association of Plumbing and Mechanical Officials, with the following amendment:
Section 104.4.35, Expiration, is amended to read as follows:
| Every permit issued shall become invalid and shall be expired unless the work authorized by such permit is commenced within 365 days after its issuance, or if the work authorized by such permit is suspended or abandoned for a period of 365 days after the time the work is commenced. The Building Official may extend the time for action by the applicant for a period of 180 days upon a request by the applicant, in writing, showing that circumstances beyond the full control of the applicant have prevented any action from being taken. In the event that the applicant is diligently pursuing completion of work authorized by the permit the Building Official may extend the issued building permit an additional 180 days. Fees for extension of permit applications and issued permits shall be in the amounts fixed by resolution of the City Council. A request for permit extension may not be granted for an issued building permit if no work has begun or no inspections have been approved within three years of the date the permit was issued. The construction plans and support documents submitted may thereafter be destroyed by the Building Official. In order to renew action on a permit after expiration, the applicant shall reapply for the building permit, resubmit construction plans and support documents and pay a new plan review fee. |
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(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.080. California Plumbing Code.¶
Adoption of the California Code of Regulations Title 24, Part 5: The California Plumbing Code, 2025 Edition, and appendices thereof, as published by the International Association of Plumbing and Mechanical Officials, with the following amendments:
Appendix Chapter A, Recommended Rules for Sizing the Water Supply System, of the California Plumbing Code, 2025 Edition, is hereby adopted.
Appendix Chapter B, Explanatory Notes on Combination Waste and Vent Systems, of the California Plumbing Code, 2025 Edition, is hereby adopted.
Appendix Chapter C, Alternate Plumbing Systems, of the California Plumbing Code, 2025 Edition, is hereby adopted.
Appendix Chapter D, Sizing Storm Water Drainage Systems, of the California Plumbing Code, 2025 Edition, is hereby adopted.
Appendix Chapter I, Installation Standard for PEX Tubing Systems for Hot- and Cold-Water Distribution, of the California Plumbing Code, 2025 Edition, is hereby adopted.
Section 104.4.35 Expiration is amended to read as follows:
| Every permit issued shall become invalid and shall be expired unless the work authorized by such permit is commenced within 365 days after its issuance, or if the work authorized by such permit is suspended or abandoned for a period of 365 days after the time the work is commenced. The Building Official may extend the time for action by the applicant for a period of 180 days upon a request by the applicant, in writing, showing that circumstances beyond the full control of the applicant have prevented any action from being taken. In the event that the applicant is diligently pursuing completion of work authorized by the permit the Building Official may extend the issued building permit an additional 180 days. Fees for extension of permit applications and issued permits shall be in the amounts fixed by resolution of the City Council. A request for permit extension may not be granted for an issued building permit if no work has begun or no inspections have been approved within three years of the date the permit was issued. The construction plans and support documents submitted may thereafter be destroyed by the Building Official. In order to renew action on a permit after expiration, the applicant shall reapply for the building permit, resubmit construction plans and support documents and pay a new plan review fee. |
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(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.090. California Energy Code.¶
Adoption of the California Code of Regulations Title 24, Part 6: California Energy Code, 2025 Edition, as published by the International Code Council.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.100. California Historical Building Code.¶
Adoption of the California Code of Regulations Title 24, Part 8: California Historical Building Code, 2025 Edition, as published by the International Code Council.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.105. California Wildland-Urban Interface Code Part 7.¶
Adoption of the California Code of Regulations Title 24, Part 7: California Wildland-Urban Interface Code, 2025 Edition, as published by the International Code Council.
(Ord. 938, 12/9/2025)
§ 14.04.110. California Fire Code.¶
Adoption of the California Code of Regulations Title 24, Part 9: 2025 Edition of the California Fire Code as published by the International Code Council including Appendix Chapters A, B, C, D, E, F, G, H, and N, together with any amendments adopted by the Rancho Adobe Fire Protection District Board and as ratified by the Cotati City Council.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.120. California Existing Building Code.¶
Adoption of the California Code of Regulations Title 24, Part 10: California Existing Building Code, 2025 Edition, as published by the International Code Council.
Appendix Chapter A, Guidelines for the Seismic Retrofit of Existing Buildings, including Chapter A1 Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings; Chapter A3 Prescriptive Provisions for Seismic Strengthening of Cripple Walls and Sill Plate Anchorage of Light, Wood-Frame Residential Buildings; Chapter A4 Earthquake Risk Reduction in Wood-Frame Residential Buildings with Soft, Weak, or Open Front Walls, is hereby adopted.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.130. California Green Building Standards Code.¶
Adoption of the California Code of Regulations, Title 24, Part 11: California Green Building Standards Code 2025 Edition, as published by the International Code Conference with the following amendments:
Appendix Chapter A4, Residential Voluntary Measures, Tier 1 for New Buildings and substantial remodels and additions, including Division A4.1, A4.3, A4.4 and A4.5, of the California Green Building Standards Code, 2025 Edition, is hereby adopted.
Appendix Chapter A5, Non-Residential Voluntary Measures, Tier 1 for New Buildings and substantial remodels and additions, including Division A4.1, A4.3, A4.4 and A4.5, of the California Green Building Standards Code, 2025 Edition, is hereby adopted.
With the following amendments Appendix Chapter A4 Tier 1 and Appendix Chapter A5 Tier 1.
California Green Building Standards Code Appendix A4 Residential Voluntary Measures Section A4.601.1 is amended to read as follows:
| A4.601.1 The Tier 1 measures contained in this appendix, Division A4.1, A4.3, A4.4, A4.5 and A4.6 are adopted as mandatory provisions for new buildings only. |
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California Green Building Standards Code Appendix A5 – Nonresidential Voluntary Measures Section A5.601.1 is added to read as follows:
| A5.601.1 The Tier 1 measures contained in this appendix, Division A5.1, A5.3, A5.4, A5.5 and A5.6 are adopted as mandatory provisions for new buildings only. |
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(Ord. 919 §§ 3, 6, 2023; Ord. 938, 12/9/2025)
§ 14.04.140. California Referenced Standards Code.¶
Adoption of the California Code of Regulations Title 24, Part 12: California Referenced Standards Code, 2025 Edition, as published by the International Code Council.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.150. International Property Maintenance Code.¶
Adoption of the International Property Maintenance Code, 2024 Edition, as published by the International Code Council, with the following amendments:
Part 1 – Scope and Application: Any and all references throughout this code to any International Code shall be considered to reference the California Fire Code, California Building Code, or California Residential Code or any other California Code of Regulations, Title 24, as applicable.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.160. Adoption and enforcement of National Fire Codes.¶
Adoption of the current edition of the National Fire Code, 2025 Edition, as published by the National Fire Protection Association.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.180. Non-Liability of City of Cotati.¶
This chapter shall not be construed as imposing upon the City of Cotati (or any official or employee thereof) any liability or responsibility for damages to any property or injuries to any person resulting from defects in building construction, defective plumbing, or drainage systems or installations thereof), electrical or gas installations, or by installations of containers for the use of flammable products, nor shall the City of Cotati (or any official or employee thereof) be held as assuming any such liability or responsibility for property damage from any cause whatsoever which may have been caused by a gas leakage, fire or explosion of any gas appliance or house gas piping, electrical application or electrical wiring or from the storage or use of flammable and/or hazardous materials.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.190. Repeal of conflicting ordinances.¶
All other ordinances or parts of ordinances in conflict with this chapter are hereby repealed.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.200. Violations and penalties.¶
Any person violating any of the provisions of this chapter shall be deemed guilty of an infraction and any person violating the same section or a portion of an ordinance on a second or subsequent occasion shall thereafter be deemed guilty of a misdemeanor and upon conviction of either an infraction or a misdemeanor shall be punishable by law.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
§ 14.04.210. Fees.¶
The City Council of the City of Cotati may establish permit fees as set forth by resolution.
(Ord. 916 § 2, 2022; Ord. 938, 12/9/2025)
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