§ 25.03.005 RESIDENTIAL DISTRICTS.

   (A)   The intent of the residential districts is to provide for a range of housing types consistent with the general plan and other compatible land uses that will support and enhance the residential environment.

   (B)   Rural Residential (RR) District - Intent.

      (1)   The RR zone is intended to provide areas of mixtures of housing and limited agricultural uses. The single-family dwelling is the primary use while agricultural uses are intended to be of secondary importance. This category applies to areas in proximity to urban services. The density of this zone shall be a maximum of one dwelling unit per acre, unless a public sewer and public water service is available or the municipality accepts wastewater treatment responsibility, at which point the minimum net parcel size may be reduced to one-half acre. The following regulations except to the extent they may be modified by this title or by a combining or overlay district, shall apply to every lot and building in the RR district.

      (2)   Development applications are by county policy referred to the city that would provide services to the project.

   (C)   Residential districts.

      (1)   These residential districts are established to provide areas in suitable locations for the various types of dwelling accommodations needed in the county and to provide a means of regulating the density and distribution of the population in conformance with the general plan.

      (2)   There are two residential zones which implement the residential mixed land use designation of the general plan:

         (a)   Single-family residential; or

         (b)   Residential multiple.

   (D)   Single-Family Residential (R-1) District.

      (1)   The intent of the R-1 district is to provide primarily for the development of single-family neighborhoods, with appropriate supporting uses. Attached or multi-family housing is not permitted, except for accessory dwelling units and where state law mandates approval of these types of housing.

      (2)   Development intensity is established in part by the availability of public water and sewer service. In areas where both are available, smaller lot sizes can be created. Where one or both is not available, lot sizes will be limited by the availability of local soils and underground water to provide sufficient capacity consistent with the Building Code and other health regulations.

   (E)   Residential Multiple (RM) District - Intent and application of article.

      (1)   The intent of the RM district is to allow for areas of multiple-family dwellings, in areas already developed to urban density, as well as having utility services to allow this density to continue. This will allow unincorporated pockets of urban concentration to occur where public sewer and water, as well as circulation, other utilities and services exist or can be provided.

      (2)   This zoning designation is to be located where commercial services, recreational facilities and public services, such as shopping and health care, are available within a reasonable distance. The following regulations, as set out in this article, except to the extent that they may be modified by a combining or overlay district, or any adopted specific plan, shall apply to every lot and building site in an RM district.

      (3)   An adopted specific plan may establish, without limitation, a separate list of permitted and conditionally permitted land uses, site development standards, height and coverage limitations and building setbacks for all land within the boundaries of the specific plan.

      (4)   Development intensity is established in part by the availability of public water and sewer service. In areas where both are available, smaller lot sizes can be created. Where one or both is not available, lot sizes will be limited by the availability of local soils and underground water to provide sufficient capacity consistent with the Building Code and other health regulations.

   (F)   RR, R-1, and RM permitted uses. The following table designates uses are permitted, administratively permitted, conditionally permitted, or prohibited in an RR, R-1, and RM districts. These uses apply to every lot and building site in the RR, R-1, and RM zoning districts, except where modified by a combining zone.

Table 25.03-D

Land Uses - Residential Zones

P =   Permitted Use A =   Administrative Use Permit Required C =   Conditional Use Permit Required “—” =   Use Not Allowed All new structures require review, per Chapter 25.02 of this code
Land Use Classification	Rural Residential (RR)	Single Family Residential (R-1)	Residential Multiple (RM)	Additional Regulations
Agricultural Uses
Commercial agricultural as defined in the Glossary	P	—	—
Hobby/personal agriculture	P	P	P
Small livestock farming	P	—	—
Sale of agricultural produce grown on the premises	P	P	P
Residential Uses
Single-family dwelling, primary	P	P	C
Additional single-family dwellings	P	P	P	Must meet density requirements of the general plan
Tiny homes	P	P	P	See § 25.08.029 for tiny homes standards
Accessory dwelling unit	P	P	P	See accessory dwelling unit standards in § 25.08.002
Boarding house	P	P	P
Duplex or half-plex	—	—	P
Group home (small)	P	P	P
Group home (large)	C	C	C
Mobile home park	—	—	P

 

Land Use Classification	Rural Residential (RR)	Single Family Residential (R-1)	Residential Multiple (RM)	Additional Regulations
Multiple-family dwellings, condominiums and apartments	—	See Note	P	A mix of residential development types is required in the R-1 for projects of more than 5 units where public water and sewer are available. Project must meet general plan density requirements for the RM land use designation (Land Use Table 3-1)
Senior/congregate care	P	P	P
Transitional and supportive housing	P	P	P
Other
Assembly uses, including places of worship, private clubs, fraternity/sorority houses, senior centers	C	C	C
Bus stops, park and ride lots, transit stops	P	P	P
Cemetery (includes columbarium)	C	C	C
Commercial outdoor recreational uses, including but not limited to RV parks, hunting clubs and riding clubs and golf courses	C	—	—
Day care, small and large family	P	P	P	Must be operated in accordance with Cal. Health and Safety Code, Div. 2, Chapter 3.6, §§ 1597.44, 1597.45, 1597.46, and 1597.465
Day care center	C	C	C
Educational institution, private	C	C	C	Public schools are not regulated by this title

 

Land Use Classification	Rural Residential (RR)	Single Family Residential (R-1)	Residential Multiple (RM)	Additional Regulations
Hospital	C	C	C
Library or museum not operated by a governmental entity	A	A	A	Publicly operated libraries and museums are not regulated by this title
Microwave, radio and television transmission and/or relay structures	C	C	C	Facilities regulated by the PUC are not regulated by this title
Private enterprise performing governmental functions	C	C	C
Railway stations, multi-modal transit centers	C	C	C
Renewable energy generation facilities, commercial scale	—	—	—
Renewable energy generation facilities, private non-commercial	A	A	A	See § 25.08.016 for development standards
Recreational uses incidental to single-family residential uses and for the exclusive use of the residents residing on the same parcel	P	P	P
Accessory/incidental uses	Regulated as a use per this table. Administrative use permit or conditional use permit required if shown in the table above.
*Similar uses	See “Interpretations” in § 25.01.009

 

   (G)   Residential district development standards. The following table establishes the basic development standards for the rural residential and urban residential zones. Development standards for some specific uses are provided in Chapter 25.08 of this code. These standards apply to every lot and building site in the RR, R-1, and RM zoning districts, except where modified by a combining zone.

Table 25.03-E

Development Standards - Residential Zones

Development Standard	Rural Residential (RR)	Single Family Residential (R-1)	Residential Multiple (RM)
Lot and Density Standards
Maximum density	2 dwelling units per acre 1	Up to 20 units per acre if both public water and sewer are available 1	8 - 20 dwelling units per acre if both public water and sewer are available 1
Minimum lot size	0.5 to 1 acre •   0.5 acre: public sewer + public water •   1 acre: only one public water/sewer service provided)	5,000 sq. ft., 1 acre, and 2.5 acres minimums for single family homes, depending on availability of services:3 •   5,000 sq. ft.: public sewer + public water •   1 acre: septic tanks + public water •   2.5 acre: septic tanks + well water)	No minimum lot size for multi-family 2 Single family development intensity depends on availability of services: 3 •   1 acre: septic tanks + public water •   2.5 acre: septic tanks + well water)
Minimum Lot Requirements
Interior lot width/lot depth	Depth of lot cannot be more than three times the width of the lot (Planning Commission can waive for parcels larger than 5 acres in size)
Maximum lot coverage (percentage)	40%	40%	60%
FAR 0.8	N/A	0.8 FAR	0.8 FAR
Building Form and Location
Front setback	25	20	20 feet, except the setback shall be 15 feet for parcels of less than 7,200 square feet if administrative approval by the Planning Director is granted
Side setback (each side)	15% of width (not less than 8 feet, but not more than 32 feet required)	10% of the lot width (not less than 6 feet, but not more than 20 feet required)	10% of the lot width (not less than 6 feet, but not more than 20 feet required)
Rear setback	20% of lot depth, not less than 20 feet, but not more than 35 feet required	20% of lot depth, not less than 20 feet, but not more than 35 feet required	20% of lot depth, not less than 20 feet, but not more than 30 feet required
Distance between main buildings	Subject to requirements of California Building Code
Maximum building height (feet)	35	30	35
1.   ADUs and JADUs not counted toward density. 2.   30% mixed housing types required for RM lots with public infrastructure/utilities. 3.   Note: Site-specific soil characteristics may result in larger lot sizes.

 

(Ord. 1043 § 3 (part), 2022)