§ 155.204.030 DEVELOPMENT STANDARDS.

   (A)   RE and R1 Zoning Districts. Table 204-2 shows development standards in the RE and R1 Zoning Districts when neither the authority contained in Cal. Government Code § 65852.21 (two single-family homes on one lot) nor § 66411.7 (urban lot split subdivisions) is exercised. Standards apply to both primary and accessory buildings unless otherwise noted.

   (B)   Two single-family homes on one lot zoned RE or R1. Table 204-2.1 shows development standards for development of two attached or detached single-family homes on one lot in the RE and R1 zoning districts pursuant to Cal. Government Code § 65852.21. Table 204-2.1 does not apply if the subject lot is created through an urban lot split subdivision (See Table 204-2.2).

   (C)   Urban lot splits. Table 204-2.2 shows development standards in the RE and R1 zoning districts for lots that are subdivided pursuant to Cal. Gov’t Code § 66411.7 and § 155.332.030 (Urban Lot Split Subdivisions).

Table 204-2: RE and R1 Development Standards
Standard	Zoning District		Additional Standards
	Residential Estate RE	Residential Low R1
Minimum lot area [1]	10,000 sq. ft.	5,000 sq. ft.	155.308.010
Maximum floor area ratio (FAR)	0.75	1.0
Density
Maximum units per acre or lot [2]	4 du/acre	1 du/lot [3]
Minimum lot area per unit [1] [2]	10,000 sq. ft.	5,000 sq. ft.
Maximum site coverage	35%	60%
Maximum building height	35 ft.	35 ft.	155.308.020
Minimum front setbacks [4]			155.204.030(F); 155.308.030
Building walls	15 ft. [5]	10 ft. [5]
Porches and stoops	15 ft. [5]	5 ft. [5]
Garage doors and carport entrances	20 ft.	20 ft.
Minimum exterior side setbacks			155.204.030 (F), (G); 155.308.030
Accessory dwelling unit [6]	4 ft. [7]	4 ft. [7]
Building walls; porches and stoops	15 ft. [5]	5 ft. [5]
Garages on a corner lot facing a side street and entirely located within 30 ft. of the rear lot line [8]	0 ft. or > 20 ft. [8]	0 ft. or > 20 ft. [8]	155.204.030(H)
All other garages	20 ft.	20 ft.
Minimum interior side setbacks			155.204.030(G); 155.308.030
Accessory dwelling unit [6]	4 ft. [7]	4 ft. [7]
All other structures	15 ft.	5 ft.
Minimum side setback adjacent to an alley [7] [10]
Accessory dwelling unit [6]	0 ft. - 4 ft. or > 10 ft. [7]	0 ft. - 4 ft. or > 10 ft. [7]
First story	0 ft. - 2 ft. or > 10 ft.	0 ft. - 2 ft. or > 10 ft.
Second story and above	0 ft.	0 ft.
Minimum rear setbacks			155.204.030(I); 155.308.030
Alley adjacent [9] [10]
Accessory dwelling unit [6]	0 ft. - 4 ft. or > 10 ft. [7]	0 ft. - 4 ft. or > 10 ft. [7]
First story	0 ft. - 2 ft. or > 10 ft.	0 ft. - 2 ft. or > 10 ft.
Second story and above	0 ft.	0 ft.
No alley [9]
Accessory dwelling unit [6]	4 ft. [7]	4 ft. [7]
First story	5 ft.	5 ft.
Second story and above	10 ft.	10 ft
NOTES TO TABLE: [1] Minimum lot area standard applies only to new lots created through the subdivision or lot line adjustment process after June 20, 2019. Lots existing as of June 20, 2019, are not subject to a minimum lot size standard. [2] Excludes accessory dwelling units in conformance with § 155.316 (Accessory Dwelling Units). [3] For new subdivisions or conservation subdivisions, maximum 8.5 du/acre. [4] Includes accessory dwelling units in conformance with § 155.316 (Accessory Dwelling Units). [5] Or average of adjacent lots, whichever is less. See § 155.204.030(F) (Average Setback Alternative). [6] New construction or increase in footprint of an existing structure to create an accessory dwelling unit on the first story. [7] Provided the setbacks as proposed are sufficient for fire and safety as determined by the Building Official. [8] Garages must be set back either 0 ft. or 20 ft. or more from the lot line. Garages may not be setback any distance between 0 ft. and 20 ft. from the lot line. See Figure 204-4. This applies only to garages, not to carports. [9] See Figure 204-5 in § 155.204.030(I) (Rear Setbacks). [10] Eaves, gutters and other building features may project across a lot line into an alley only when allowed by the Building Code and with an easement and/or encroachment permit.

 

Table 204-2.1: Two Single-family Homes on One Lot Zoned RE or R1
Standard	Zoning District		Additional Standards
	Residential Estate RE	Residential Low R1
Maximum Floor Area Ratio (FAR)	0.75	1.0
Density
Maximum units per lot [1]	2 du/lot	2 du/lot
Maximum site coverage	35%	60%
Maximum building height	35 ft.	35 ft.	155.308.020
Minimum front setbacks [2] [5]			155.204.030(F); 155.308.030
Building walls	15 ft. [3]	10 ft. [3]
Porches and stoops	15 ft. [3]	5 ft. [3]
Garage doors and carport entrances	20 ft.	20 ft.
Minimum exterior side setbacks [2] [5]
Building walls; porches and stoops	4 ft. [3]	4 ft. [3]
Garages on a corner lot facing a side street and entirely located within 30 ft. of the rear lot line [7]	0 ft. or > 20 ft.	0 ft. or > 20 ft.	155.204.030(H)
All other garages [6]	20 ft.	20 ft.
Minimum interior side setbacks [2] [5]
All structures	4 ft.	4 ft.
Minimum side setback alley adjacent [2] [4] [5]
First story	0 ft. - 4 ft. or > 10 ft.	0 ft. - 4 ft. or > 10 ft.
Second story and above	0 ft.	0 ft.
Minimum rear setbacks
Alley adjacent [2] [4] [5]
First story	0 ft. - 4 ft. or > 10 ft.	0 ft. - 4 ft. or > 10 ft.
Second story and above	0 ft.	0 ft.
No alley [2] [5]
All structures	4 ft.	4 ft.
Notes: [1] Two single-family residences, one ADU and one JADU are allowed on a parcel using only the authority contained in California Gov’t Code § 65852.2. Accessory dwelling units and/or junior accessory dwelling units are not considered a "unit". [2] Provided the setback is sufficient for fire and safety as determined by the Building Official. [3] Or average of adjacent lots, whichever is less. See § 155.204.030(F) (Average Setback Alternative). [4] Eaves, gutters, and other building features may project across a lot line into an alley only when allowed by the Building Code and with an easement and/or encroachment permit. [5] No change to existing setbacks is required when either replacing an existing structure with a second single-family home in the exact same footprint as the original structure, or when converting an existing structure to a second single- family home, provided the setback is sufficient for fire and safety as determined by the Building Official. [6] New garages must be set back 20 feet or more from the lot line. [7] New garages may not be setback any distance between 0 ft. and 20 feet from the lot line. See Figure 204-4. This applies only to garages, not to carports.

 

Table 204-2.2: Urban Lot Split Development Standards
Standard	Zoning District		Additional Standards
	Residential Estate RE	Residential Low R1
Minimum lot area	1,200 sq. ft.	1,200 sq. ft.	155.308.010
Minimum lot area as a percentage of original lot area	40%	40%
Maximum Floor Area Ratio (FAR)
Residential structures only	1.3	1.3
Residential structures and covered parking (garage and/or carport)	1.67	1.67
Density
Maximum units per lot [1]	3 du/lot	3 du/lot
Maximum site coverage	100%	100%
Maximum building height	35 ft.	35 ft.	155.308.020
Minimum front setbacks [2] [5]			155.204.030(F); 155.308.030
Building walls	10 ft. [3]	10 ft. [3]
Porches and stoops	5 ft. [3]	5 ft. [3]
Garage doors and carport entrances	0 ft. or > 20 ft.	0 ft. or > 20 ft.
Minimum exterior side setbacks [2] [5]
Building walls; porches and stoops	4 ft. [3]	4 ft. [3]
Garages on a corner lot facing a side street and entirely located within 30 ft. of the rear lot line [7]	0 ft. or > 20 ft.	0 ft. or > 20 ft.	155.204.030(H)
All other garages [6]	20 ft.	20 ft.
Minimum interior side setbacks [2] [5]
All structures	4 ft.	4 ft.
Minimum side setback alley adjacent [2] [4] [5]
First story	0 ft. - 4 ft. or > 10 ft.	0 ft. - 4 ft. or > 10 ft.
Second story and above	0 ft.	0 ft.
Minimum rear setbacks
Alley adjacent [2] [4] [5]
First story	0 ft. - 4 ft. or > 10 ft.	0 ft. - 4 ft. or > 10 ft.
Second story and above	0 ft.	0 ft.
No alley [2] [5]
All structures	4 ft.	4 ft.
Notes: [1] A maximum of one single-family residence, one JADU and either one additional single-family residence or one ADU are allowed on a lot that is subdivided using the authority contained in California Gov’t Code § 66411.7 and § 155.332.030 (Urban Lot Split Subdivisions). Existing accessory dwelling units and/or junior accessory dwelling units are considered a "unit" for purposes of an urban lot split subdivision. [2] Provided the setback is sufficient for fire and safety as determined by the Building Official. [3] Or average of adjacent lots, whichever is less. See § 155.204.030(F) (Average Setback Alternative). [4] Eaves, gutters, and other building features may project across a lot line into an alley only when allowed by the Building Code and with an easement and/or encroachment permit. [5] No setback is required for an existing structure or when replacing an existing structure in the exact same footprint as the original structure, provided the setback is sufficient for fire and safety as determined by the Building Official. In addition, no setback is required between existing or proposed adjacent or connected single-family homes, provided that the structures meet building code safety standards and are sufficient to allow separate conveyance. [6] New garages must be set back either 0 ft. or 20 ft. or more from the lot line. [7] New garages may not be setback any distance between 0 ft. and 20 ft. from the lot line. See Figure 204-4. This applies only to garages, not to carports.

 

   (D)   R2 and R3 Zoning Districts. Table 204-3 shows development standards in the R2 and R3 Zoning Districts. Standards apply to both primary and accessory buildings unless otherwise noted.

Table 204-3: R2 and R3 Development Standards
Standard	Zoning District		Additional Standards
	Residential Medium R2	Residential High R3
Minimum lot area [1]	2,000 sq. ft.	2,000 sq. ft.	155.308.010
Density
Maximum units per acre [2]	22 du/acre	44 du/acre
Minimum lot area per unit	2,000 sq. ft.	1,000 sq. ft.
Maximum floor area ratio (FAR)	1.25	1.25
Maximum site coverage
Lots less than 4,000 sq. ft.	50%	60%
Lots 4,000 - 5,999 sq. ft.	60%	70%
Lots 6,000 sq. ft. and above	70%	80%
Maximum building height			155.308.020
Primary building	35 ft. [11]	35 ft. [11]
Detached accessory building [11]
Lots less than 4,000 sq. ft.	24 ft.	24 ft.
Lots 4,000 - 5,999 sq. ft.	28 ft.	28 ft.
Lots 6,000 sq. ft. and above	35 ft.	35 ft.
Minimum front setbacks [3]			155.204.030(F); 155.308.030
Building walls	10 ft. [4]	10 ft. [4]
Porches and stoops	5 ft. [4]	5 ft. [4]
Garage doors and carport entrances	20 ft.	20 ft.
Minimum exterior side setbacks			155.204.030(F), (G); 155.308.030
Accessory dwelling unit [5]	4 ft. [6]	4 ft. [6]
Building walls; porches and stoops	5 ft. [4]	5 ft. [4]
Garages on a corner lot facing a side street and entirely located within 30 ft. of the rear lot line [7]	0 ft. or > 20 ft. [8]	0 ft. or > 20 ft. [8]	155.204.030(H)
All other garages [7]	20 ft.	20 ft.
Minimum interior side setbacks			155.204.030(G); 155.308.030
Accessory dwelling unit [5]	4 ft. [6]	4 ft. [6]
All other structures	5 ft.	5 ft.
Minimum side setback adjacent to an alley [7] [11]
Accessory dwelling unit [6]	0 ft. - 4 ft. or 10 ft. [7]	0 ft. - 4 ft. or 10 ft. [7]
First story	0 ft. - 2 ft. or 10 ft.	0 ft. - 2 ft. or 10 ft.
Second story and above	0 ft.	0 ft.
Minimum rear setbacks			155.204.030(I); 155.308.030
Alley adjacent [9] [10]
Accessory dwelling unit [5]	0 ft. - 4 ft. or 10 ft. [6]	0 ft. - 4 ft. or 10 ft. [6]
First story	0 ft. - 2 ft. or 10 ft.	0 ft. - 2 ft. or 10 ft.
Second story and above	0 ft.	0 ft.
No alley [9]
Accessory dwelling unit [5]	4 ft. [6]	4 ft. [6]
First story	5 ft.	5 ft.
Second story and above	10 ft.	10 ft
NOTES TO TABLE: [1] Minimum lot area standard applies only to new lots created through the subdivision or lot line adjustment process after June 20, 2019. Lots existing as of June 20, 2019, are not subject to a minimum lot size standard. [2] Excludes accessory dwelling units in conformance with § 155.316 (Accessory Dwelling Units). [3] Includes accessory dwelling units in conformance with § 155.316 (Accessory Dwelling Units). [4] Or average of adjacent lots, whichever is less. See § 155.204.030(F) (Average Setback Alternative). [5] New construction or increase in footprint of an existing structure to create an accessory dwelling unit on the first story. [6] Provided the setbacks as proposed are sufficient for fire and safety as determined by the Building Official and pursuant to the California Building or Residential Code. [7] Setback also applies to accessory dwelling units above a proposed garage. [8] Garages must be set back either 0 ft. or 20 ft. or more from the lot line. Garages may not be setback any distance between 0 ft. and 20 ft. from the lot line. See Figure 204-4. This applies only to garages, not to carports. [9] See Figure 204-5 in § 155.204.030(I) (Rear Setbacks). [10] Eaves, gutters and other building features may project across a lot line into an alley only when allowed by the Building Code and with an easement and/or encroachment permit. [11]   The maximum height for an accessory building attached to a primary building is the same as the maximum height of the primary building.

 

   (E)   Lot area and dimensions. See § 155.308.010 (Lot Standards).

   (F)   Average setback alternative. Minimum required front and exterior side setbacks in Tables 204-2, 204.2-1, 204.2-2 and 204-3 may be reduced as provided below.

      (1)   Interior lots.

         (a)   For interior lots adjacent to two developed lots, the minimum front setback for building walls, porches and stoops may be reduced to the average existing front setback of buildings of all developed lots on the same block face. See Figure 204-1.

         (b)   For lots not on a standard block configuration, the minimum setback may be reduced to the setback equal to the adjacent developed lots. New multi-lot subdivisions must comply with the minimum setbacks in Tables 204-2 and 204-3.

      (2)   Corner lots. For corner lots, the minimum front and exterior side setbacks may be reduced to the average setback of all developed lots on the same block face, including alley-separated lots. See Figure 204-2.

                  Figure 204-1: Alternative Front Setback - Interior Lots

         Figure 204-2: Alternative Front and Exterior Side Setback - Corner Lots

   (G)   Established side setbacks for building additions.

      (1)   A building wall non-conforming to an interior or exterior side setback, if established prior to June 20, 2019, may be extended by-right to accommodate a residential addition of habitable floor area, including accessory dwelling units. See Figure 204-3. This allowance does not apply to garages and other non-habitable buildings or portions of a building.

      (2)   Eaves and other building projections may not extend across a lot line. The Director may require a boundary survey to verify the lot line location.

            Figure 204-3: Established Setbacks for Building Additions

   (H)   Exterior side setbacks for garages. As stated in Tables 204-2 and 204-3, if a street-facing garage is entirely located within 30 feet of the rear lot line, the garage must be setback either zero feet or 20 feet or more from the exterior lot line. See Figure 204-4. This provision applies only to garages, not to carports.

                  Figure 204-4: Exterior Street Garage Setbacks

   (I)   Rear setbacks.

      (1)   As stated in Tables 204-2 and 204-3, the first story of a building must be setback either zero to two feet or ten feet or more from an alley-adjacent rear lot line. No setback is required for the second story and above. See Figure 204-5.

      (2)   For rear lot lines that are not adjacent to any alley, a five-foot setback is required for the first story and a ten-foot setback is required for the second story and above. See Figure 204-5.

         Figure 204-5: Minimum Rear Setback Elevations

   (J)   Setback projections. See § 155.308.030(A) (Building Features) for building projections and site improvement allowed within minimum setbacks.

   (K)   Accessory dwelling units. See § 155.316 (Accessory Dwelling Units) for development standards that apply to accessory dwelling units (ADUs).

   (L)   Accessory structures and site features; setback encroachments. See § 155.308.030(B) (Site Features) for site features and accessory structures allowed in minimum setback areas.

   (M)   Subdivision alternatives. See § 155.332 (Residential Subdivision Alternatives) for allowed modifications to development standards for small lot subdivisions, conservation subdivisions, and urban lot split subdivisions.

   (N)   Design standards. See § 155.312 (Design Standards) for building entry, architectural relief and garage door width standards that apply to new primary buildings, except single-family homes.

   (O)   Parking. See § 155.324 (Parking).

   (P)   Landscaping. See § 155.328 (Landscaping).

(Ord. 885-C.S., passed 5-21-19; Am. Ord. 902-C.S., passed 8-18-20; Am. Ord. 916-C.S., passed 7-6-21; Am. Ord. 931-C.S., passed 2-15-22; Am. Ord. 951-C.S., passed 10-17-23)