Chapter 18 — 04Residential Districts — Dixon Zoning Code

18.04.010 Purpose ¶

The purpose of Residential Districts is to:

A. Provide for a full range of housing types to meet the diverse economic and social needs of residents;
B. Preserve, protect, and enhance the character of the City’s neighborhoods;
C. Enhance the quality of life of residents;
D. Ensure that the scale and design of new development and alterations to existing development are compatible with surrounding uses and appropriate to the physical and aesthetic characteristics of the proposed location; and
E. Provide sites for public and semi-public uses such as parks, schools, and other community uses that serve residents and complement surrounding residential development.

Additional purposes of each Residential District:

Residential Low Density (RL). The RL District is intended to provide for residential development and other compatible uses in a low density residential neighborhood setting at densities up to nine dwelling units per acre. Housing types in this District are primarily single-unit detached units, but other types are allowed subject to density limitations. The RL District implements the Low Density Residential General Plan Land Use Designation.

Residential Medium Density (RM). The RM District is intended to provide for a variety of housing types at densities from 10 to 22 dwelling units per acre. Housing types in this District include single-unit detached units, townhomes, garden homes, zero lot line homes, apartments and condominiums. Other compatible uses appropriate in a medium density residential environment are allowed. The RM District implements the Medium Residential Density General Plan Land Use Designation.

Zoning Code Update Adopted

18.04.020 Land Use Regulations ¶

Table 18.04.020: Land Use Regulations – Residential Districts, sets the land use regulations for the Residential Districts. Land uses are defined in Chapter 18.34, Use Classifications. Land uses not listed in the table and not substantially similar to the uses listed are prohibited. In cases where a specific land use or activity is not defined, the Community Development Director shall assign the land use or activity to a classification that is substantially similar in character. The decision of the Director in such instances may be appealed under Section 18.21.120, Appeals. The Director may refer any request for determination of use classification that is unclear, may generate substantial public controversy, or involve significant land use policy decisions to the Planning Commission for decision.

TABLE 18.04.020: LAND USE REGULATIONS - RESIDENTIAL DISTRICTS

“P” =Permitted Use; “A” = Administrative Use	Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed	Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed	Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed
Land Use Classification	RL	RM	Additional Regulations
Residential Uses
Residential Dwelling Units	See subclassifications below
Single-Unit Dwelling, Detached	P	P	Subject to density limitations of the applicable Zoning District
Single-Unit Dwelling, Attached	P	P
Multi-Unit Dwelling	P	P
Accessory Dwelling Unit	See Section 18.19.040, Accessory Dwelling Units
Employee Housing	See Section 18.19.090, Employee Housing (for farmworkers)
Family Day Care	Small and large family day cares are permitted in all districts where residential uses are allowed and are considered residential uses of a property.
Group Residential	-	C
Mobile Home Park	P	P
Residential Care Facilities	See subclassifications below
Small	Small residential care facilities constitute a residential use and are subject only to those restrictions that apply to other residential uses of the same type in the same zoning district.
Large	-	A
Residential Facility, Assisted Living	C	P
Supportive Housing	See §18.19.140, Supportive and Transitional Housing
Transitional Housing	See §18.19.140, Supportive and Transitional Housing
Public/Semi-Public Uses
Community Assembly	C	C
Community Garden	P	P	See §18.19.070, Community and Market Gardens

City of Dixon

TABLE 18.04.020: LAND USE REGULATIONS - RESIDENTIAL DISTRICTS

“P” =Permitted Use; “A” = Administrative Use Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed	“P” =Permitted Use; “A” = Administrative Use Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed	“P” =Permitted Use; “A” = Administrative Use Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed	“P” =Permitted Use; “A” = Administrative Use Permit required; “C” = Conditional Use Permit required; “-“ = use not allowed
Land Use Classification	RL	RM	Additional Regulations
Cultural Institutions	C	C
Day Care Centers	-	C
Hospitals and Clinics	See subclassifications below
Skilled Nursing Facility	-	C
Low Barrier Navigation Center	P	P	Must be consistent with Government Code Section
			65660 et seq
Park and Recreation Facilities	P	P
Public Safety Facilities	P	P
Schools, Private	C	C
Commercial Uses

Commercial Entertainment and Recreation See subclassifications below

Outdoor Recreation	C(1) -
Market Garden, less than 1 acre in size	A A	See §18.19.070, Community and Market Gardens
Market Garden, 1 acre or more in size	C C	See §18.19.070, Community and Market Gardens
Transportation, Communication, and	Utility Uses
Telecommunication Facilities	See Section 18.19.150, Telecommunication Facilities
Other Uses
Accessory Uses, Activities, and Structures	See Section 18.19.030, Accessory Uses and Activities and Section 18.11.020,
	Accessory Structures
Animal Keeping	The keeping of animals, including bees, dogs, cats, poultry, rabbits, and other
	animals are subject to the provisions of DMC Title 7, Animals
Home Occupations	See Section 18.19.120, Home Occupations
Nonconforming Uses	See Chapter 18.15, Nonconforming Uses, Structures, and Lots
Temporary Uses	See Section 18.19.160, Temporary Uses

Specific Limitations:

Limited to equestrian facilities and golf courses.

18.04.030 Development Standards ¶

Table 18.04.030: Development Standards – Residential Districts, prescribes the development regulations for the Residential Districts. Section numbers in the Additional Regulations column refer to other sections of this Code.

Zoning Code Update Adopted

TABLE 18.04.030: DEVELOPMENT STANDARDS - RESIDENTIAL DISTRICTS

Standard	RL	RM	Additional Regulations
Density (dwelling units/acre)
Minimum	n/a	10	In the RL District, two dwelling units are allowed per lot pursuant to §18.04.040.B, SB9 Two Unit Development, RL District, regardless of site area
Maximum	9	22
Minimum Street Frontage	50	40
Minimum Lot Size (sq ft)	7,000	8,000	In the RL District, smaller lots are allowed pursuant to §18.04.040.B, SB9 Urban Lot Splits, RL District
Minimum Lot Width (ft)	65	60
Minimum Lot Depth (ft)	100; 130 if adjoining a railroad, freeway, or principal arterial	100; 130 if adjoining a railroad, freeway, or principal arterial
Maximum Height (ft)	30	38	See §18.02.030.C, Measuring Height, and §18.11.070, Height Limitation Exceptions
Minimum Setbacks (ft)
Front	20, except as provided below for garages	20	See §18.02.030.I, Determining Setbacks and §18.11.050, Encroachments into Required Setbacks
Garages with entries parallel to the front property line	22
Garages with entries perpendicular to the front property line with curved driveways	15
Side	12 on one side; 5 on the other side, except as provided below for narrow lots and corner lots. For new units, the 12 foot setback shall be located on the side nearest the driveway	10, except as provided below for narrow lots and corner lots
Lots less than 50 feet wide	5	5
Corner lots	Street side: 15 Interior side: 5	Street side: 15 Interior side: 10

City of Dixon

TABLE 18.04.030: DEVELOPMENT STANDARDS - RESIDENTIAL DISTRICTS	TABLE 18.04.030: DEVELOPMENT STANDARDS - RESIDENTIAL DISTRICTS	TABLE 18.04.030: DEVELOPMENT STANDARDS - RESIDENTIAL DISTRICTS	TABLE 18.04.030: DEVELOPMENT STANDARDS - RESIDENTIAL DISTRICTS
Standard	RL	RM	Additional Regulations
Rear	Lots less than 75 feet deep: 15 Lots 75 to 125 feet deep: 20% of lot depth Lots 125 or more feet deep: 25	Lots less than 75 feet deep: 15 Lots 75 to 125 feet deep: 20% of lot depth Lots 125 or more feet deep: 25
Maximum Lot Coverage (% of lot)	45	60	See §18.02.030.G, Determining Lot Coverage
Minimum Open Space (sf per residential unit)	200	200	See §18.11.040.H, Open Space

18.04.040 Supplemental Regulations ¶

A. RL District Limitation on Curb Cuts. In the RL District, no more than 40 percent of a property’s frontage shall be used for curb cuts for driveways.
B. SB9 Two Unit Development, RL District. In the RL District, two dwelling units are allowed per lot if the following standards are met:
1. The proposed development shall not be located in any of the following areas:
  - a. Prime farmland or farmland of statewide importance
  - b. Wetlands
  - c. High or very high fire hazard severity zone
  - d. Hazardous waste site
  - e. Within a delineated earthquake fault zone
  - f. Within a special flood hazard area / subject to a Letter of Map Revision
  - g. Within regulatory floodway
  - h. Lands identified for conservation in an adopted natural community conservation plan
  - i. Habitat for protected species
  - j. Lands under conservation easement

Zoning Code Update Adopted

k. Within a historic district or property included on the State Historic Resources Inventory, as defined in Section 5020.1 of the Public Resources Code, or within a site that is designated or listed as a city or county landmark or historic property or district pursuant to a city or county ordinance.

The proposed development shall not require demolition or alteration of any of the following types of housing:
- a. Housing that is subject to a recorded covenant, ordinance, or law that restricts rents to levels affordable to persons and families of moderate, low, or very low income.
- b. Housing that is subject to any form of rent or price control through a public entity’s valid exercise of its police power.
- c. Housing that has been occupied by a tenant in the last three years.
The proposed development shall not be located on a lot on which an owner of residential real property has exercised the owner’s rights under Chapter 12.75 (commencing with Section 7060) of Division 7 of Title 1 of the California Government Code to withdraw accommodations from rent or lease within 15 years before the date that the development proponent submits an application.
The proposed development shall not involve the demolition of more than 25 percent of the existing exterior structural walls.
Each unit constructed pursuant to this subsection shall comply with all provisions of the base, overlay, or specific plan district, except as modified by this Section.
- a. Maximum Height. Units constructed pursuant to this subsection shall not exceed 16 feet in height.
- b. Interior Side and Rear Setbacks. A minimum four-foot interior side and rear setback is required; however no setback is required for an existing structure or a structure constructed in the same location and to the same dimensions as an existing structure.
- c. Parking. A minimum of one space per unit shall be provided unless:

i. The lot is located within one-half mile walking distance of either a highquality transit corridor, as defined in subdivision (b) of Section 21155 of the Public Resources Code, or a major transit stop, as defined in Section 21064.3 of the Public Resources Code.
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- ii. There is a car share vehicle located within one block of the lot.
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City of Dixon

  - d. _Rental Limitations._ Rental terms shall be a minimum of 30 consecutive days.

C. SB9 Urban Lot Splits, RL District. In the RL District, urban lot splits consistent with California Government Code Section 66411.7 and Title 17, Subdivision Regulations, of the Dixon Municipal Code are allowed consistent with the following:
1. No more than two new lots shall be created.
2. Each new lot shall be at least 1,200 square feet in size and at least 40 percent of the area of the original lot.
3. The urban lot split shall not involve a lot that has been established through prior exercise of an urban lot split.
4. Neither the owner of the lot being subdivided nor any person acting in concert with the owner may have previously subdivided an adjacent parcel using an urban lot split.
5. The urban lot split shall not be located in any of the following areas:
  - a. Prime farmland or farmland of statewide importance
  - b. Wetlands
  - c. High or very high fire hazard severity zone
  - d. Hazardous waste site
  - e. Within a delineated earthquake fault zone
  - f. Within a special flood hazard area / subject to a Letter of Map Revision
  - g. Within regulatory floodway
  - h. Lands identified for conservation in an adopted natural community conservation plan
  - i. Habitat for protected species
  - j. Lands under conservation easement
  - k. Within a historic district or property included on the State Historic Resources Inventory, as defined in Section 5020.1 of the Public Resources Code, or within a site that is designated or listed as a city or county landmark or historic property or district pursuant to a city or county ordinance.
6. The urban lot split shall not require demolition or alteration of any of the following types of housing:

Zoning Code Update Adopted

a. Housing that is subject to a recorded covenant, ordinance, or law that restricts rents to levels affordable to persons and families of moderate, low, or very low income.
b. Housing that is subject to any form of rent or price control through a public entity’s valid exercise of its police power.
c. A lot on which an owner of residential real property has exercised the owner’s rights under Chapter 12.75 (commencing with Section 7060) of Division 7 of Title 1 of the California Government Code to withdraw accommodations from rent or lease within 15 years before the date that the development proponent submits an application.
d. Housing that has been occupied by a tenant in the last three years.

Applicant Occupancy Required. The applicant for an urban lot split shall sign an affidavit stating that the applicant intends to occupy one of the housing units as their principal residence for a minimum of three years from the date of the approved urban lot split.
- a. Exception. This requirement does not apply to an applicant that is a community land trust or qualified nonprofit corporation.
Maximum Number of Units. A maximum of two residential units are allowed per lot, inclusive of accessory dwelling units and junior accessory dwelling units.
Development Standards. Development on lots created by urban lots splits shall comply with all provisions of the base, overlay, or specific plan district in which it is located, except as modified by this Section.
- a. Interior Side and Rear Setbacks. A minimum four-foot interior side and rear setback is required; however no setback is required for an existing structure or a structure constructed in the same location and to the same dimensions as an existing structure.
- b. Parking. A minimum of one space per unit shall be required unless:
  - i. The lot is located within one-half mile walking distance of either a highquality transit corridor, as defined in subdivision (b) of Section 21155 of the Public Resources Code, or a major transit stop, as defined in Section 21064.3 of the Public Resources Code.
  - ii. There is a car share vehicle located within one block of the lot.
- c. Rental Limitations. Rental terms shall be a minimum of 30 consecutive days.

City of Dixon

Review Procedures. A parcel map for an urban lot split consistent with California Government Code Section 66411.7 and Title 17, Subdivision Regulations, of the Dixon Municipal Code shall be ministerially approved.

Zoning Code Update Adopted