This chapter lists the land uses that may be allowed within the residential zoning districts established by Section 20-20.020 (Zoning Map and Zoning Districts), determines the type of land use permit/approval required for each use, and provides basic standards for site layout and building size.
(Ord. 3677 § 1, 2004; Ord. 3968 § 1, 2011)
The purposes of the individual residential zoning districts and the manner in which they are applied are as follows.
A. 
RR (Rural Residential) district. The RR zoning district is applied to areas of the City intended to accommodate residential neighborhoods with compatible agricultural uses, but where the primary uses are residential, and compatible accessory uses. The maximum allowable density ranges from 0.2 to two dwellings per acre, with the specific allowable density for each parcel shown on the zoning map by a numerical suffix to the RR map symbol (see Section 20-22.040). The RR zoning district implements and is consistent with the Residential—Very Low Density land use classification of the General Plan.
B. 
R-1 (Single-Family Residential) district. The R-1 zoning district is applied to areas of the City intended to be maintained as residential neighborhoods comprised of detached and attached single-family houses, clustered Residential hillside projects, and small multi-family projects, together with compatible accessory uses. The maximum allowable density ranges from two to 13 dwellings per acre, with the specific allowable density for each parcel shown on the zoning map by a numerical suffix to the R-1 map symbol (see Section 20-22.040). The R-1 zoning district implements and is consistent with the Residential—Very Low Density (where residential clustered on hillsides is desirable), Low Density/Open Space, Low Density, and Medium Low Density land use classifications of the General Plan.
C. 
R-2 (Medium Density Multi-Family Residential) and R-3 (Multi-Family Residential) districts. The R-2 and R-3 zoning districts are applied to areas of the City appropriate for residential neighborhoods with medium and higher residential densities, to provide home rental and ownership opportunities, and to provide a full range of choices in housing types to improve access to affordable housing. The maximum allowable density ranges from eight to 30 dwellings per acre, with the specific allowable density for each parcel shown on the zoning map by a numerical suffix to the R-3 map symbol (see Section 20-22.040). Densities of more than 30 dwellings per acre may be allowed within the Mixed Use land use designation of the General Plan. The R-2 and R-3 zoning districts implement and are consistent with the Residential—Medium Density and Medium High Density land use classifications of the General Plan.
D. 
TV-R (Transit Village-Residential) district. The TV-R zoning district is applied to areas within approximately one-half mile of a transit facility that is appropriate for mixed use development. Development should transition from less intense uses at the outlying edges to higher intensity uses near the transit facility. Residential uses are required, and ground floor neighborhood serving retail and live-work uses are encouraged. The maximum allowable density ranges from 25 to 40 dwellings per acre. The TV-R zoning district is consistent with and implements the Transit Village Medium land use classification of the General Plan.
E. 
MH (Mobile Home Park) district. The MH zoning district is applied to areas of the City occupied by and intended to be maintained as mobile home parks. The maximum allowable density ranges from four to 18 dwellings per acre. The MH zoning district implements and is consistent with the Residential—Mobile Home Park land use classification of the General Plan.
F. 
NMU (Neighborhood Mixed Use) district. The NMU zoning district is applied to areas within downtown Santa Rosa to allow for multi-family residential development in all residential or mixed-use buildings and a variety of uses that primarily serve local residents such as professional office, retail, entertainment, service, and other neighborhood-scale supporting uses. Housing development will include low- and mid-rise apartments and condominiums, as well as small-lot single-family attached dwellings (e.g., duplexes, triplexes, townhomes). Live-work spaces and maker-oriented uses are permitted subject to performance standards. The NMU zoning district implements and is consistent with the Neighborhood Mixed Use land use classification of the General Plan.
(Ord. 3677 § 1, 2004; Ord. 3711 § 1 Exh. A, 2005; Ord. 3950 § 3, 2010; Ord. 2020-014 § 5; Ord. 2021-012 § 8)
Table 2-2 identifies the uses of land allowed by this Zoning Code in each residential zoning district, and the land use permit required to establish each use, in compliance with Section 20-21.030 (Allowable Land Uses and Permit Requirements).
Note: where the last column in the table ("Specific Use Regulations") includes a section number, the regulations in the referenced section apply to the use. Provisions in other sections of this Zoning Code may also apply.
TABLE 2-2 Allowed Land Uses and Permit Requirements for Residential Zoning Districts*
P
MUP
CUP
S
Permitted Use, Zoning Clearance required
Minor Conditional Use Permit required
Conditional Use Permit required
See Specific Use Regulations for permit requirement
Use not allowed
LAND USE (1)
PERMIT REQUIRED BY DISTRICT
Specific Use Regulations
RR
R-1
R-2
R-3
MH
NMU
TV-R
AGRICULTURAL & OPEN SPACE USES
Agricultural accessory structure
P
 
Animal keeping—Livestock, including aviaries
S
20-42.040
Crop production, horticulture, orchard, vineyard
P
MUP
 
Initial crop processing
MUP
MUP
 
Plant nursery
CUP
 
RECREATION, EDUCATION & PUBLIC ASSEMBLY USES
Community garden (5)
P
P
P
P
P
P
P
 
Equestrian facility
CUP
 
Golf course/country club, public or quasi-public
CUP
CUP
 
Health/fitness facility—Commercial
P
 
Health/fitness facility—Quasi-public
MUP
MUP
MUP
MUP
MUP
P
MUP
 
Library/museum
MUP
MUP
MUP
MUP
MUP
P
P
 
Meeting facility, public or private
MUP
MUP
MUP
MUP
MUP
MUP
MUP
 
Park/playground, public or quasi-public
MUP
MUP
MUP
MUP
MUP
P
P
 
Private residential recreation facility
MUP
MUP
MUP
MUP
MUP
MUP
MUP
 
School, public or private
MUP
MUP
MUP
MUP
MUP
MUP
MUP
 
Studio—Art, dance, martial arts, music, etc.
MUP
MUP
 
RESIDENTIAL USES (See Section 20-28.080, Senior Housing (-SH) combining district, for specific requirements regarding proposed senior housing developments)
Accessory dwelling unit
S
S
S
S
S
S
20-42.130
Agricultural employee housing—6 or fewer residents
P
P
P
P
P
P
P
 
Agricultural employee housing—7 or more residents
MUP
MUP
MUP
MUP
MUP
MUP
MUP
 
Animal keeping—Domestic, exotic
S
S
S
S
S
S
S
20-42.040
Cannabis—Personal cultivation
P
P
P
P
P
P
P
20-46
Community care facility—6 or fewer clients
P
P
P
P
P
P
P
20-42.060
Community care facility—7 or more clients
MUP
MUP
MUP
MUP
MUP
MUP
MUP
20-42.060
Emergency shelter
CUP
CUP
CUP
CUP
CUP
CUP
CUP
 
Home occupation
S
S
S
S
S
S
S
20-42.070
Junior accessory dwelling unit
S
S
S
S
S
S
20-42.130
Live/work
MUP
P(3)
20-42.080
Mobile home park
CUP
CUP
CUP
CUP
CUP
CUP
20-42.100
Mobile home/ manufactured housing unit
P
P
P
P
P
P
P
20-42.094
Multi-family dwellings
MUP
MUP
P
P
P
P
 
Organizational house (dormitory, sorority, monastery, etc.)
MUP
MUP
CUP
CUP
CUP
CUP
 
Residential accessory structures and uses
P
P
P
P
P
P
P
20-42.030
Residential component of a mixed use project
MUP
MUP
MUP
MUP
MUP
P
P
20-42.090
Rooming or boarding house
P
P
P
P
P
P
 
Rooming or boarding, accessory
P
P
P
P
P
P
 
Single-family dwelling
P
P
P(2)
P(2)
P(2)
P(2)
 
Small lot residential project
CUP
CUP(2)
CUP(2)
CUP(2)
CUP(2)
20-42.140
Supportive housing
P
P
P
P
P
P
P
 
Transitional housing
P(4)
P(4)
P
P
P
P
P
 
Work/live
MUP
MUP
20-42.080
RETAIL TRADE
Accessory retail uses
MUP
P
P
20-42.024
Alcoholic beverage sales
CUP
CUP
20-42.034
Artisan shop
P
MUP
 
General retail—up to 20,000 sf of floor area
P
P
 
Specialty food store—10,000 sf or less
P
P
 
Neighborhood center
MUP
MUP
MUP
MUP
MUP
P
P
 
Outdoor display and sales
MUP
MUP
20-42.110
Pharmacy
P
P
 
Produce stand
MUP
P
MUP
 
Restaurant, café, coffee shop—Counter ordering
P
P
 
Restaurant, café, coffee shop—Outdoor dining
P
MUP
20-42.110, 20-42.160
Restaurant, café, coffee shop—Serving alcohol (no bar)
P
MUP
 
Restaurant, café, coffee shop—Table service
P
P
 
Second hand store
 
 
SERVICES—BUSINESS, FINANCIAL, PROFESSIONAL
ATM
P
P
20-42.044
Medical service—Health care facility—6 or fewer patients
P
P
P
P
P
P
P
20-42.060
Medical service—Health care facility—7 or more patients
MUP
MUP
MUP
MUP
MUP
MUP
MUP
20-42.060
Medical service—Integrated medical health center
MUP
MUP
MUP
MUP
 
SERVICES—GENERAL
Accessory service uses
MUP
MUP
MUP
20-42.024
Adult day care
MUP
MUP
MUP
MUP
MUP
MUP
MUP
 
Child day care—Large family day care home
P
P
P
P
P
P
P
20-42.050
Child day care—Small family day care home
P
P
P
P
P
P
P
 
Child day care center (15 or more clients)
CUP
CUP
CUP
CUP
MUP
MUP
20-42.050
Extended hours of operation (11:00 p.m. to 6:00 a.m.)
MUP
CUP
 
Lodging—Bed & breakfast inn (B&B)
MUP
MUP
 
Personal services
P
MUP
 
Public safety facility
MUP
MUP
MUP
MUP
MUP
MUP
MUP
 
TRANSPORTATION, COMMUNICATIONS & INFRASTRUCTURE
Telecommunications antenna
S
S
S
S
S
S
S
20-44
Utility facility
CUP
CUP
CUP
CUP
CUP
CUP
CUP
 
Utility infrastructure
P
P
P
P
P
P
P
 
Key to Zoning District Symbols
RR
Rural Residential
R-3
Multi-Family Residential
NMU
Neighborhood Mixed Use
R-1
Single-Family Residential
MH
Mobile Home Park
TV-R
Transit Village-Residential
R-2
Medium Density Multi-Family Residential
Notes:
(1)
See Division 7 for land use definitions.
(2)
Single-family dwellings allowed only as attached units.
(3)
A building permit is required to verify occupancy standards.
(4)
A Minor Use Permit is required for the construction of new multi-family supportive or transitional housing units in an RR or R-1-6 Zoning District, similar to construction of a new traditional multi-family unit in an RR or R-1-6 Zone. The construction of new multi-family supportive housing units does not require a Minor Use Permit when the proposed use meets each of the requirements of Assembly Bill 2162, as specified in Government Code Section 65651. A new supportive or transitional housing use occupying an existing multi-family residence in an RR or R-1-6 Zoning District is a permitted use requiring only a Zoning Clearance.
(5)
A community garden is allowed on the same property as an existing permitted meeting facility provided that the establishment of the garden does not trigger a grading permit or affect the operation and design of the meeting facility.
*
The land use and permit requirements set forth in this table shall be waived for all land uses approved under the provisions of Chapter 20-16, Resilient City Development Measures.
(Ord. 3677 § 1, 2004; Ord. 3711 § 1 Exh. A, 2005; Ord. 3889 § 2, 2008; Ord. 3950 § 4, 2010; Ord. 3968 § 2, 2011; Ord. 3978 § 3, 2012; Ord. 3997 § 4, 2012; Ord. 4001 § 2, 2012; Ord. 4002 § 2, 2012; Ord. 4042 § 2, 2015; Ord. 2017-024 § 2; Ord. 2017-025 § 2; Ord. 2018-012 § 3; Ord. 2020-001 § 3; Ord. 2020-014 § 6; Ord. 2021-012 § 9)
The minimum parcel size requirements for new subdivisions in the residential zoning districts and maximum allowable residential densities are established by Table 2-3.
A. 
Application of requirements to property. The application of minimum parcel size requirements to property within the City is shown on the Zoning Map (Chapter 20-20) by means of a numerical or alphabetical suffix appended to the residential Zoning Map symbols (e.g., R-1-9, R-3-HD). Each applicable suffix is shown in the "Zoning District and Suffix" column of Table 2-3.
B. 
Attached housing projects. A condominium, townhome, or planned development project may be subdivided for ownership purposes into smaller parcels than allowed by Table 2-3, with the minimum lot area requirement, maximum lot coverage, and dimensions determined through the subdivision review process, provided that the overall development site complies with the lot area and width requirements of this Chapter, and the total number of dwellings does not exceed the maximum density established by the applicable zoning district.
C. 
Small lot residential projects. Small lot residential projects are allowed in compliance with Section 20-42.140 (Residential Small Lot Projects), instead of the requirements in Table 2-3.
TABLE 2-3—RESIDENTIAL ZONING DISTRICT PARCEL SIZE AND DENSITY
Zoning District and Suffix
Minimum Lot Size
Maximum Number of Dwelling Units (units) per Parcel
Gross Area
Width (1)
RR-40
1 acre
Determined through subdivision process
1 dwelling unit, plus 1 second unit where allowed by Section 20-42.140,
Or a multi-family project where authorized by Minor Use Permit approval, and consistent with the allowable density established by the General Plan, only on a parcel that complies with the minimum lot size requirements.
RR-20
20,000 sf
R-1-6
6,000 sf—Interior lot
7,000 sf —Corner lot
60 ft—Interior lot
70 ft—Corner lot
R-1-7.5
7,500 sf—Interior lot
8,000 sf—Corner lot
75 ft
R-1-9
9,000 sf—Interior lot
9,500 sf—Corner lot
80 ft
R-1-15
15,000 sf—Interior lot
15,000 sf—Corner lot
R-2
6,000 sf—Interior lot
7,000 sf—Corner lot
60 ft—Interior lot
70 ft—Corner lot
1 unit per 3,000 sf (2)
R-3-10
1 unit per 4,300 sf (2)
R-3-15
1 unit per 2,900 sf (2)
R-3-18
80 ft—Interior lot
1 unit per 2,400 sf (2)
R-3-30
90 ft—Corner lot
1 unit per 1,450 sf (2)
R-3-HD
Determined by CUP
MH
5 acres for mobile home park; as determined by mobile home park Conditional Use Permit for individual mobile home sites within a mobile home park.
4 to 18 units per acre
TV-R
None required.
25 to 40 units per acre
NMU
None required.
No maximum. See FAR Section 20-23.060.A.
Notes:
(1)
Minimum lot width shall be measured midway between the front and rear lot lines.
(2)
The density requirement is expressed as the minimum number of square feet of gross site area required for each dwelling unit.
(Ord. 3677 § 1, 2004; Ord. 3711 § 1 Exh. A, 2005; Ord. 3950 § 5, 2010; Ord. 2020-014 § 7)
New land uses, structures, and site development, and alterations to existing land uses, structures, and site development within the residential zoning districts shall be designed, constructed, and established in compliance with the following re-quirements, and all applicable standards in Divisions 3 (Site Planning and General Development Standards) and 4 (Standards for Specific Land Uses) of this Zoning Code.
A. 
RR and R-1 zoning districts. See the requirements in Tables 2-3 and 2-4.
B. 
R-2 and R-3 zoning districts. See the requirements in Tables 2-3 and 2-5.
C. 
MH zoning district. See the requirements in Section 20-42.100 (Mobile Home Parks).
D. 
TV-R zoning district. See the requirements in Tables 2-3 and 2-5. The standards of this district are intended to support a diverse mix of multi-family housing, live-work housing and mixed-use residential with neighborhood serving retail. See also the General Plan, Downtown Station Area Specific Plan and Section 2 (Core Area) of the City's Design Guidelines.
1. 
Residential required. Each new development shall be a residential project, with a ground floor neighborhood serving retail or live-work component encouraged, in compliance with the residential density requirements of the TV zoning district in Table 2-3.
2. 
Height limit. There is a four-story height limit for new buildings within this zoning district, with the exception of those projects located adjacent to existing residential zones or residential uses where the maximum height shall transition down to a maximum of three stories adjacent to the residential property.
3. 
Development adjacent to residential zones and residential uses. Development located adjacent to a Residential zone or residential use shall be compatible in both scale and design with the adjacent neighborhood.
4. 
Site design, hours of operation. Site design and hours of operation shall be as determined by the review authority to be compatible with surrounding neighborhood uses.
5. 
Setbacks for noise and air quality impacts. To facilitate the planned transition to a more compact Development pattern within the TV-R zoning district, increased setback distances shall not be used as a measure to mitigate potential noise and air quality impacts when new development is proposed adjacent to nonconforming industrial or light industrial uses.
E. 
NMU zoning district. See the requirements in Tables 2-3 and 2-5. The standards of this district allow for new multi-family residential development and other neighborhood-scale supporting uses in all-residential or mixed-use buildings.
See also Sections 2 (Core Area), 3.1 (Single-Family Residential), 3.2 (Multiple-Family Residential), and 4.3 (Infill Development), of the City's Design Guidelines.
TABLE 2-4—RR AND R-1 DISTRICT DEVELOPMENT STANDARDS
Development Feature
Requirement by Zoning District
RR-40
RR-20
R-1-6
R-1-7.5
R-1-9
R-1-15
Setbacks, primary structures (1)
Minimum setbacks required. See Section 20-30.110 for setback measurement instructions, and exceptions to these requirements.
Front
20 ft
15 ft
20 ft
Side—Interior
5 ft
5 ft
5 ft for 1-story parts of structures
10 ft for 2-story parts of structures
10 ft
10 ft
Side—Corner
20 ft
15 ft
15 ft
Rear
20 ft
15 ft
20 ft
Garage/carport front
A garage/carport entrance facing a public or private street shall be set back 19 ft from the rear of the sidewalk, street property line, or street plan line, whichever is greater. A garage facing a public or private alley or driveway shall be set back 3 to 5 ft from the alley property line, back of curb, sidewalk, or pavement edge, whichever is greater.
Setbacks, accessory structures (1)
Minimum setbacks accessory structures. See also Sections 20-30.110 for exceptions, and 20-42.030 (Accessory Uses and Structures).
Front
20 ft
Side—Interior
5 ft
5 ft
0 ft for attached and zero lot line units
5 ft
0 ft for attached and zero lot line units
Side—Corner
20 ft
15 ft
Rear
5 ft
5 ft
Alley
3 to 5 ft, or 19 ft when used for parking with direct access to alley.
Building separation
See Sections 20-30.110 (Setback Requirements and Exceptions) and 20-42.030 (Accessory Structures and Uses).
Lot coverage
Maximum percentage of total lot area that may be covered by structures. See Section 20-22.040 (Residential District Subdivision and Density Standards).
Residential structures
40%
Meeting facility
Determined through Conditional Use Permit approval, to a maximum of 75%
Height limit
Maximum allowable height of structures. See Sections 20-30.070 (Height Limits and Exceptions) for height measurement requirement and height limit exception and 20-52.060 (Minor Adjustments, Minor Variances and Variances).
Primary structures
35 ft
35 ft
Accessory structures
16 ft
16 ft
Fences, walls & hedges
No fence, wall, or hedge shall exceed a height of 3 feet in any required front or corner side setback, or 6 feet in any other location on the lot. See Section 20-30.050 (Fences, Walls, and Hedges).
Landscaping
See Chapter 20-34 (Landscaping Standards).
Parking
See Chapter 20-36 (Parking and Loading).
Signs
See Chapter 20-38 (Signs).
Notes:
(1)
For a multi-family housing project the setbacks are measured from the exterior walls of the structure to the outermost project property lines.
TABLE 2-5—R-2 AND R-3 DISTRICT DEVELOPMENT STANDARDS
Development Feature
Requirement by Zoning District
R-2
R-3-10
R-3-15
R-3-18
R-3-30
R-3-HD
NMU (3)
TV-R
Setbacks, primary structures (1) (2)
Minimum setbacks required. See Section 20-30.110 for setback measurement instructions, and exceptions to these requirements.
Front
10 ft provided a 1-story portion may project up to 6 ft into the setback and required stairs and landings may project up to 10 ft into the setback.
Nonresidential ground floor
0 - 10 ft (min/max)
None, except as required by the review authority (2)
Nonresidential ground floor
5 - 12 ft (min/max)
Side—Interior 1-story portions
Attached and detached except when:
5 ft
0 - 10 ft (min/max); 5 feet required when directly abutting existing low-density residential development
None, except as required by the review authority (2)
Abutting an R-3
0 ft
0 - 10 ft (min/max); 5 feet required when directly abutting existing low-density residential development
Side—Interior 2-story portions
Attached and detached except when:
10 ft
0 - 10 ft (min/max); 5 feet required when directly abutting existing low-density residential development
None, except as required by the review authority (2)
Abutting an R-3
7.5 ft
0 ft
0 - 10 ft (min/max); 5 feet required when directly abutting existing low-density residential development
Abutting a nonresidential district
7.5 ft
0 - 10 ft (min/max)
Side—Interior 3-story portions (or more)
Attached and detached except when:
15 ft
0 - 10 ft (min/max); 5 feet required when directly abutting existing low-density residential development
None, except as required by the review authority (2)
Abutting an R-3
10 ft
0 ft
0 - 10 ft (min/max); 5 feet required when directly abutting existing low-density residential development
Abutting a nonresidential district
10 ft
0 ft
Side—Corner
10 ft provided a 1-story portion may project up to 6 ft into the setback and required stairs and landings may project up to 10 ft into the setback.
0 - 10 ft (min/max)
 
Rear
Attached and detached except when:
15 ft
0 ft; 5 feet required when directly abutting existing low-density residential development
None, except as required by the review authority (2)
Abutting an R-3
15 ft
0 ft
0 ft; 5 feet required when directly abutting existing low-density residential development
Garage/carport front
A garage/carport entrance facing a public or private street shall be set back 19 ft from the rear of the sidewalk, street property line, or street plan line, whichever is greater. A garage facing a public or private alley or driveway shall be set back 3 to 5 ft, or 19 ft from the alley property line, back of curb, sidewalk, or pavement edge, whichever is greater.
Setbacks, accessory structures (1)
Minimum setbacks for accessory structures. See also Sections 20-30.110 for exceptions, and 20-42.030 (Accessory Uses and Structures).
Front
20 ft
None, except as required by the review authority (2)
None, except as required by the review authority (2)
Side—Interior
5 ft
Side—Corner
15 ft
Rear
5 ft
Alley
3 to 5 ft, or 19 ft when used for parking with direct access to alley.
 
Building separation
See Sections 20-30.110 (Setback Requirements and Exceptions) and 20-42.030 (Accessory Structures and Uses).
Lot coverage
Maximum percentage of total lot area that may be covered by structures. See Section 20-22.040 (Residential District Subdivision and Density Standards).
Maximum coverage
50%
55%
60%
65%
75%
100%
100%
Height limit
Maximum allowable height of structures. See Section 20-30.070 (Height Limits and Exceptions) for height measurement requirements, and height limit exceptions.
Primary structures
35 ft
45 ft
No maximum. See FAR Section 20-23.060.A.
4 stories, except for properties that abut residential and historic residential uses and zoning districts, maximum height shall transition down to a max. of 3 stories adjacent to the residential property.
Accessory structures
16 ft
Fences, walls & hedges
No fence, wall, or hedge shall exceed a height of 3 feet in any required front or corner side setback, or 6 feet in any other location on the lot. See Section 20-30.110 (Setback requirements and exceptions).
Landscaping
See Chapter 20-34 (Landscaping Standards).
Parking
See Chapter 20-36 (Parking and Loading).
Signs
See Chapter 20-38 (Signs).
Notes:
(1)
The Design Review or Conditional Use Permit process may require larger setbacks.
(2)
The North Station Area (-SA) or Downtown Station Area (-DSA) Combining Districts may require special setbacks.
(3)
See Zoning Code Section 20-23.060 for additional zoning district development standards.
(Ord. 3677 § 1, 2004; Ord. 3711 § 1 Exh. A, 2005; Ord. 3950 §§ 6, 7, 2010; Ord. 2020-014 § 8; Ord. 2021-012 § 10)