Chapter 17.15 - RD DETACHED UNIT RESIDENTIAL ZONES REGULATIONS

Sections:


17.15.010 - Title, intent, and description.

A.

Title and Intent. The provisions of this Chapter shall be known as the Detached Unit Residential (RD) regulations. The intent of the RD regulations is to create, maintain, and enhance residential areas primarily characterized by detached, single-unit structures.

B.

Description of Zones. This Chapter establishes land use regulations for the following two zones:

1.

RD-1 Detached Unit Residential Zone - 1. The intent of the RD-1 zone is to create, maintain, and enhance areas with detached, single unit structures. A limited number of commercial uses will be permitted or conditionally permitted in existing non-residential facilities.

2.

RD-2 Detached Unit Residential Zone - 2. The intent of the RD-2 zone is to create, maintain, and enhance areas with detached, single unit structures, with allowances for two-family structures on lots larger than 6,000 square feet. A limited number of commercial uses will be permitted or conditionally permitted in existing non-residential facilities.

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)

17.15.020 - Required design review process.

Except for projects that are exempt from design review as set forth in Section 17.136.025, no Building Facility, Designated Historic Property, Potentially Designated Historic Property, Telecommunications Facility, Sign, or other associated structure shall be constructed, established, or altered in exterior appearance, unless plans for the proposal have been approved pursuant to the design review procedure in Chapter 17.136, and when applicable, the Telecommunications regulations in Chapter 17.128, or the Sign regulations in Chapter 17.104.

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)

17.15.030 - Permitted and conditionally permitted activities.

Table 17.15.01 lists the permitted, conditionally permitted, and prohibited activities in the RD zones. The descriptions of these activities are contained in Chapter 17.10. Section 17.10.040 contains permitted accessory activities.

"P" designates permitted activities in the corresponding zone.

"C" designates activities that are permitted only upon the granting of a Conditional Use Permit (CUP) in the corresponding zone (see Chapter 17.134 for the CUP procedure).

"L" designates activities subject to certain limitations or notes listed at the bottom of the table.

"—" designates activities that are prohibited except as accessory activities according to the regulations contained in Section 17.010.040.

Table 17.15.01: Permitted and Conditionally Permitted Activities

Activities Zones
Additional
Regulations
RD-1 RD-2
Residential Activities
  Permanent P(L1) P(L1) 17.102.212
  Residential Care C(L1) 17.102.212
  Service-Enriched Permanent Housing C(L1) 17.102.212
  Transitional Housing C(L1) 17.102.212
  Emergency Shelter
  Semi-Transient
  Bed and Breakfast C C 17.10.125
Civic Activities
  Essential Service P P
  Limited Child-Care Activities P P
  Community Assembly C C
  Recreational Assembly C C
  Community Education C C
  Nonassembly Cultural C C
  Administrative C C
  Health Care
  Special Health Care
  Utility and Vehicular C C
  Extensive Impact C C
Commercial Activities
  General Food Sales C (L2)(L3) C (L2)(L3)
  Full Service Restaurants C (L2)(L3) C (L2)(L3)
  Limited Service Restaurant and Cafe C (L2)(L3) C (L2)(L3)
  Fast-Food Restaurant
  Convenience Market
  Alcoholic Beverage Sales —(L4) —(L4)
  Mechanical or Electronic Games
  Medical Service
  General Retail Sales C (L2)(L3) C (L2)(L3)
  Large-Scale Combined Retail and Grocery Sales
  Consumer Service
  Consultative and Financial Service
  Check Cashier and Check Cashing
  Consumer Cleaning and Repair Service
  Consumer Dry Cleaning Plant
  Group Assembly
  Personal Instruction and Improvement Services
  Administrative P(L3)(L5) P(L3)(L5)
  Business, Communication, and Media
Services
  Broadcasting and Recording Services Commercial Activities
  Research Service
  General Wholesale Sales
  Transient Habitation
  Wholesale and Professional Building
Material Sales
  Automobile and Other Light Vehicle Sales and Rental
  Automobile and Other Light Vehicle Gas Station and Servicing
  Automobile and Other Light Vehicle
Repair and Cleaning
  Taxi and Light Fleet-Based Services
  Automotive Fee Parking
  Animal Boarding
  Animal Care
  Undertaking Service
Industrial Activities (all)
Agriculture and Extractive Activities
  Crop and animal raising C(L6) C(L6)
  Plant nursery C C
  Mining and Quarrying
Accessory off-street parking serving prohibited activities C C 17.102.100
Additional activities that are permitted or conditionally permitted in an adjacent zone, on lots near the boundary thereof C C 17.102.110

Limitations on Table 17.15.01:

L1.  No Residential Care, Service-Enriched Permanent Housing, Transitional Housing, or Emergency Shelter Residential Activity shall be located closer than three hundred (300) feet from any other such activity. See Section 17.102.212 for other regulations regarding these activities.

L2.  These activities may only be located on the ground floor of an existing nonresidential facility that was both built prior to the effective date of this chapter and not originally used for a Civic Activity. For the purposes of this limitation, a facility is considered built if it received its certificate of occupancy or passed its final building inspection on its building permit. Also, these activities may only operate within the hours of 7:00 a.m. and 10:00 p.m.

L3.  The overall outside dimensions of an existing nonresidential facility built prior to the effective date of this chapter devoted to this activity shall not be increased; and no open parking, loading, or production serving such activity shall be relocated or increased in size. For the purposes of this limitation, a facility is considered built if it received its certificate of occupancy or passed its final building inspection on its building permit. This regulation supersedes the applicable provisions in Chapter 17.114.

L4.  In the case of an existing, nonconforming Alcoholic Beverage Sales Activity, the total floor area, open areas, or outside building dimensions occupied by the establishment shall not be increased. This regulation supersedes the Nonconforming Activity Section 17.114.080(A)1.

L5.  These activities may only be located on the ground floor of an existing nonresidential facility that was both built prior to the effective date of this chapter and not originally used for a Civic Activity. For the purposes of this limitation, a facility is considered built if it received its certificate of occupancy or passed its final building inspection on its building permit. Also, these activities may only operate within the hours of 7:00 a.m. and 10:00 p.m.; a Conditional Use Permit (CUP) is required if the ground floor nonresidential facility exceeds 1,500 square feet (see Chapter 17.134 for the CUP procedure).

L6.  Crop and Animal Raising is only permitted upon the granting of a Conditional Use Permit (see Chapter 17.134 for the CUP procedure). In addition to the criteria contained in Section 17.134.050, this activity must meet the following use permit criteria:

1.  The proposal will not adversely affect the livability or appropriate development of abutting properties and the surrounding neighborhood in terms of noise, water and pesticide runoff, farming equipment operation, hours of operation, odor, security, and vehicular traffic;

2.  Agricultural chemicals or pesticides will not impact abutting properties or the surrounding neighborhood; and

3.  The soil used in growing does not contain any harmful contaminants and the activity will not create contaminated soil.

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)

17.15.040 - Permitted and conditionally permitted facilities.

Table 17.15.02 lists the permitted, conditionally permitted, and prohibited facilities in the RD zones. The descriptions of these facilities are contained in Chapter 17.10.

"P" designates permitted facilities in the corresponding zone.

"C" designates facilities that are permitted only upon the granting of a Conditional Use Permit (CUP) in the corresponding zone (see Chapter 17.134 for the CUP procedure).

"L" designates facilities subject to certain limitations listed at the bottom of the table.

"—" designates facilities that are prohibited.

Table 17.15.02: Permitted and Conditionally Permitted Facilities

Facilities Zones
Additional
Regulations
RD-1 RD-2
Residential Facilities
  One-Family Dwelling P P
  One-Family Dwelling with Secondary Unit P P 17.102.360
  Two-Family Dwelling C (L1)
  Multifamily Dwelling
  Rooming House
  Mobile Home
Nonresidential Facilities
  Enclosed Nonresidential P P
  Open Nonresidential P P
  Sidewalk Cafe P (L2) P (L2) 17.102.335
  Drive-In Nonresidential
  Drive-Through Nonresidential
Telecommunications Facilities
  Micro Telecommunications C C 17.128
  Mini Telecommunications C C 17.128
  Macro Telecommunications C C 17.128
  Monopole Telecommunications C C 17.128
  Tower Telecommunications 17.128
Sign Facilities
  Residential Signs P P 17.104
  Special Signs P P 17.104
  Development Signs P P 17.104
  Realty Signs P P 17.104
  Civic Signs P P 17.104
  Business Signs P (L3) P (L3) 17.104
  Advertising Signs 17.104

Limitations on Table 17.15.02:

L1.  See Table 17.15.03, Property Development Standards, for additional regulations on this conditionally permitted density.

L2.  Sidewalk cafes are allowed only as an accessory facility to an already approved Full Service Restaurant or Limited Service Restaurant and Cafe. The sidewalk cafe may only operate within the hours of 7:00 a.m. to 10:00 p.m. No more than three (3) tables and no more than ten (10) chairs or seats are allowed. If more tables or chairs are requested, a Conditional Use Permit (CUP) is required (see Chapter 17.134 for the CUP procedure). See 17.102.335 for other regulations regarding Sidewalk Cafes; however, the regulations in this section supersede any contradicting regulations in Section 17.102.335.

L3.  Business Signs are only allowed on existing nonresidential facilities built prior to the effective date of this chapter; otherwise Section 17.104 applies. For the purposes of this limitation, a facility is considered built if it received its certificate of occupancy or passed its final building inspection on its building permit. Also, the maximum aggregate area of display surface of all business, civic, and residential signs on any one lot shall be 0.5 square foot for each one foot of lot frontage in the case of an interior lot, or 0.25 square feet for each one foot of lot frontage in the case of a corner lot. The aggregate shall include only one face of a double-faced sign. The total amount of aggregate sign area shall not exceed one hundred (100) square feet on any one property. See Chapter 17.104 for other regulations regarding Business Signs; however, the regulations in this section supersede any contradicting regulations in Chapter 17.104.

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)

17.15.050 - Property development standards.

A.

Zone Specific Standards. Table 17.15.03 below prescribes development standards specific to individual zones. The number designations in the "Additional Regulations" column refer to the regulations listed at the end of the Table. "—" indicates that a standard is not required in the specified zone.

Table 17.15.03: Property Development Standards

Development Standards Zones
Additional
Regulations
RD-1 RD-2
Minimum Lot Dimensions
  Width mean 45 ft 45 ft 1
  Frontage 25 ft 25 ft 1
  Lot area 5,000 sf 5,000 sf 1, 2
Maximum Density
  Permitted density 1 primary unit per lot 1 primary unit per lot 3, 4
  Conditionally permitted density 2 units on lots 6,000 sf or greater 3, 5
Minimum Setbacks
  Minimum front (<20% street-to-setback gradient) 20 ft 20 ft 6
  Minimum front (>20% street-to-setback gradient) 5 ft 5 ft 6, 7
  Minimum interior side <20% footprint slope 5 ft 5 ft 8, 9
  Minimum interior side >20% footprint slope 5 ft/10% 5 ft 8, 9, 10
  Minimum street side 5 ft 5 ft 8, 11
  Rear 20 ft 15 ft 8, 12, 13
Side and Rear Setbacks for Smaller Lots See Table 17.15.04 for setbacks for smaller lots
Floor Area Ratio (FAR) and Lot Coverage See Table 17.15.05
Height Regulations for All Lots with a Footprint Slope of <20%
  Maximum wall height primary building 25 ft 25 ft 14, 15
  Maximum pitched roof height primary building 30 ft 30 ft 14, 15
  Maximum height for accessory structures 15 ft 15 ft 14, 15
Height Regulations for all Lots with a Footprint Slope of >20% See Table 17.15.06 for Height regulations for all lots with a footprint slope of >20%
Maximum Wall Length Before Articulation Required 40 ft 40 ft 16
Minimum Parking
  Minimum parking spaces required per unit 2 1.5 17
  Additional parking spaces required for secondary unit 1 1 17, 18
Minimum Open Space
  Group open space per unit N/A 300 sf 19
  Group open space per unit when private open space substituted N/A 100 sf 19

Additional Regulations for Table 17.15.03:

1.  See Section 17.106.010 and 17.106.020 for exceptions to lot area, width mean and street frontage regulations.

2.  See Section 16.16.170(F) in the Subdivision regulations for additional regulations regarding minimum lot area.

3.  Also applicable are the provisions of Section 17.102.270 with respect to additional kitchens for a dwelling unit, and the provisions of Section 17.102.300 with respect to dwelling units with five or more bedrooms.

4.  A Secondary Unit may be permitted when there is no more than one unit on a lot, subject to the provisions of Section 17.102.360.

5.  A minimum lot size of 6,000 square feet is required in order to apply for a conditional use permit for a second primary dwelling in the RD-2 Zone. A conditional use permit for a Two-Family Dwelling Residential Facility or for two (2) dwelling units on a lot may be granted only upon determination that the proposal conforms to the general use permit criteria set forth in the Conditional use Permit (CUP) procedure in Chapter 17.134 and to all of the following additional use permit criteria:

a.  That the proposed development will not adversely affect adjoining property, nor the surrounding neighborhood, with consideration to be given to density; to the availability of neighborhood facilities and play space; to the generation of traffic and the capacity of surrounding streets; and to all other similar, relevant factors;

b.  That the site design and landscaping and the scale, height, length and width, bulk, coverage, and exterior treatment of structures are in harmony with neighborhood character and with facilities on nearby lots;

c.  That the shape and siting of the facilities, and especially of any portions thereof which exceed one story in height, are such as to minimize blocking of views and direct sunlight from nearby lots and from other Residential Facilities in the surrounding neighborhood;

d.  That the design and site planning of the buildings, open areas, parking and service areas, and other facilities provide a convenient, attractive, and functional living environment; and that paths, stairways, accessways, and corridors are designed to ensure privacy;

e.  That lot shape, size, and dimensions allow a development which will provide satisfactory internal living conditions without adversely affecting the privacy, safety, or residential amenity of adjacent residences.

6.  If adjacent lots abutting the side lot lines of the subject lot both contain principal Residential Facilities that have front setbacks with a depth of less than twenty (20) feet, the minimum front setback may be reduced for buildings and other structures on the subject lot up to a line parallel to the front lot line and extended from the most forward projection of the principal Residential Facility on the adjacent lots having the deeper front setback depth, provided such projection is enclosed, has a wall height of at least eight (8) feet, and has a width of at least five (5) feet. In the case of a corner lot or lot that has a vacant parcel next to it, this same principal may apply if the two lots adjacent to the corner lot or lot along its front lot line have less than a twenty (20) foot front setback (see Illustration for Table 17.15.03 [Additional Regulation 6], below).

Illustration for Table 17.15.03 [Additional Regulation 6]
*for illustration purposes only

17.15.050-01.jpg

7.  In all Detached Residential zones, the minimum front setback depth otherwise required by the applicable individual zone regulations shall be reduced to five (5) feet on any lot with a street-to-setback gradient that exceeds twenty (20) percent, provided, however, that the distance from the edge of the pavement to a garage or carport elevation containing one or more vehicular entries shall be at least eighteen (18) feet (see Illustration for Table 17.15.03 [Additional Regulation 7], below. See Section 17.108.130 for allowed projections into setbacks.

Illustration for Table 17.15.03 [Additional Regulation 7]
*for illustration purposes only

17.15.050-02.jpg

8.  See additional reduced side, and rear setbacks for smaller lots, Table 17.15.04. See Section 17.108.130 for allowed projections into setbacks.

9   See Section 17.108.080 for the required interior side and rear setback on a lot containing two or more living units and opposite a legally-required living room window.

10   For RD-1, the minimum interior side setback is the greater of the two listed setbacks, either five (5) feet or ten (10) percent of the lot width, whichever is greater.

11   In all residential zones, on every corner lot which abuts to the rear a key lot which is in a residential zone, there shall be provided on the street side of such corner lot a side setback with a minimum width equal to one-half (½) of the minimum front setback depth required on the key lot and no less than the minimum side setback width required along an interior side lot line of the corner lot. However, such side setback shall not be required to exceed five (5) feet in width if it would reduce to less than twenty-five (25) feet the buildable width of any corner lot. Such setback shall be provided unobstructed except for the accessory structures or the other facilities allowed therein by Section 17.108.130 (see Illustration for Table 17.15.03 [Additional Regulation 11], below). See also Section 17.110.040 C for special controls on location of detached accessory buildings on such corner lots.

Illustration for Table 17.15.03 [Additional Regulation 11]
*for illustration purposes only

17.15.050-03.jpg

12   Wherever a rear lot line abuts an alley, one-half (½) of the right-of-way width of the alley may be counted toward the required minimum rear setback; provided, however, that the portion of the minimum rear setback depth actually on the lot itself shall not be so reduced to less than ten feet. Also, see Section 17.108.130 for allowed projections into setbacks.

13   In the RD-1 zone, for lots which abut an adjoining rear setback, the minimum rear setback depth shall be increased by an additional one-half (½) foot of rear setback depth for each additional one foot of lot depth over one hundred (100) feet, up to a maximum rear setback depth of forty (40) feet.

14   See Section 17.108.030 for allowed projections above height limits and Section 17.108.020 for increased height limits for civic buildings.

15   If at least sixty (60) percent of the buildings in the immediate context are no more than one story in height, the maximum wall height shall be fifteen (15) feet within the front twelve (12) feet of buildable area. The immediate context shall consist of the five closest lots on each side of the project site plus the ten closest lots on the opposite side of the street; however, the Director of City Planning may make an alternative determination of immediate context based on specific site conditions. Such determination shall be in writing and included as part of any approval of any variance, conditional use permit, design review, determination of exemption from design review, or other special zoning approval or, if no special zoning approval is required, part of any Planning Department approval of a building permit application.

16   If the total wall length within ten (10) feet of the side lot line exceeds forty (40) feet, then the building wall shall be articulated by at least one section of additional setback. See design guidelines for more specific bulk regulations and context standards.

17   Off-street parking and loading shall be provided as prescribed in the off-street parking and loading requirements in Chapter 17.116. Bicycle parking shall be provided as prescribed in the bicycle parking regulations in Chapter 17.117. Also, additional parking standards apply within the S-11 and S-12 Zones, as prescribed in Section 17.92 and Section 17.94.

18   One parking space for the Secondary Unit is required in addition to any required parking spaces for the Primary Unit. Additional parking regulations that apply to Secondary Units are provided in Section 17.102.360.

19.  Each square foot of private usable open space equals two (2) square feet towards the total usable open space requirement, except that actual group space shall be provided in the minimum amount of one hundred (100) square feet per dwelling unit. All usable open space shall meet the standards contained in Chapter 17.126.

B.

Setbacks for Smaller Lots. Table 17.15.04 below prescribes reduced setback standards for lots less than 4,000 square feet. The number designations in the "Additional Regulations" column refer to the regulations listed at the end of the Table.

Table 17.15.04 Setbacks for Smaller Lots

Regulation Lot Size
< 4,000 sf or < 40 feet wide < 3,000 sf or < 35 feet wide Additional
Regulations
Minimum Setbacks
Minimum interior side 4 ft 3 ft 1
Minimum street side 4 ft 3 ft 1
Rear 15 ft 15 ft 1

Additional Regulations for Table 17.15.04:

1.  See Section 17.108.130 for allowed projections into setbacks.

C.

Floor Area Ratio (FAR) and Lot Coverage. Table 17.15.05 below prescribes FAR and lot coverage standards associated with lot sizes. The numbers in the "Additional Regulations" column refer to the regulations listed at the end of the Table.

Table 17.15.05 Floor Area Ratio (FAR) and Lot Coverage

Regulation Lot Size in Square Feet
< 5,000 > 5,000 and < 12,000 > 12,000 and <25,000 > 25,000 and < 43,560 > 43,560 Additional
Regulations
Maximum FAR for Lots with a Footprint Slope > 20% 0.55 0.50 0.45 0.30 0.20 1
Maximum Lot Coverage (%) 40% 40% 30% 20% 15 2

Additional Regulations for Table 17.15.05:

1.  FAR only applies to lots that have a footprint slope of greater than 20%. Lots less than 5,000 square feet may have a dwelling with a minimum of 2,000 square feet of floor area, regardless of FAR listed.

2.  Lots less than 5,000 square feet may have a lot coverage of up to 2,000 square feet regardless of lot coverage percentage (%) listed.

D.

Height. Table 17.15.06 below prescribes height standards associated with different sloped lots. The numbers in the right-hand column refer to the additional regulations listed at the end of the Table.

Table 17.15.06 Height Regulations for all Lots with a Footprint Slope of >20%

Regulation Downslope Lot Height Regulations With a Footprint Slope of: Upslope Lot Height Regulations With a Footprint Slope of:
>20% and <40% >40% and <60% >60% >20% Additional
Regulations
Maximum Height for Detached Accessory Structures 15 ft 15 ft 15 ft 15 ft 1
Maximum Wall Height Primary Building 32 ft 34 ft 36 ft 32 ft 1, 2
Maximum Wall Height Primary Building with a CUP 36 ft 38 ft 40 ft 35 ft 1
Maximum Pitched Roof Height Primary Building 36 ft 38 ft 40 ft 35 ft 1, 2
Maximum Height Above Edge of Pavement 18 ft 18 ft 18 ft N/A 1
Maximum Height Above the Ground Elevation at the Rear Setback Line N/A N/A N/A 24 ft 1
Maximum Height from Finished or Existing Grade (whichever is greater) Within 20' of the Front Property Line N/A N/A N/A 24 ft 1, 3

Additional Regulations for Table 17.15.06:

1.  See Section 17.108.030 for allowed projections above height limits and Section 17.108.020 for increased height limits for civic buildings.

2.  On a downslope lot greater than forty (40) percent footprint slope, the rear wall of an attached garage or carport may exceed the wall height and roof height by five (5) feet, but may not exceed eighteen (18) feet above ground elevation at edge of pavement, if the garage or carport conforms with all of the following criteria:

a.  Maximum width is twenty-two (22) feet and maximum depth is twenty (20) feet; and

b.  Garage or carport floor is at the same level as the edge of the street pavement resulting from the project at the center point of the driveway entrance or is at a lower level; and

c.  Maximum height above the garage or carport floor is ten (10) feet for walls to the top of the plate or flat roof and twelve (12) feet for pitched roofs (see Illustration for Table 17.15.06 [Additional Regulation 2], below).

3.  The building height is measured from finished or existing grade, whichever is lower.

Illustration for Table 17.15.06 [Additional Regulation 2]
*for illustration purposes only

17.15.050-04.jpg

17.15.050-05.jpg

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)

17.15.060 - Special regulations for mini-lot and planned unit developments.

A.

Mini-Lot Developments. In mini-lot developments, certain regulations that otherwise apply to individual lots in the RD zones may be waived or modified when and as prescribed in Section 17.102.320

B.

Planned Unit Developments. Large integrated developments shall be subject to the Planned Unit Development regulations in Chapter 17.142 if they exceed the sizes specified therein. In developments which are approved pursuant to said regulations, certain uses may be permitted in addition to those otherwise allowed in the RH zones, and certain of the other regulations applying in said zone may be waived or modified.

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)

17.15.070 - Other zoning provisions.

A.

Home Occupations. Home occupations shall be subject to the applicable provisions of the home occupation regulations in Chapter 17.112

B.

Nonconforming Uses. Nonconforming uses and changes therein shall be subject to the nonconforming use regulations in Chapter 17.114

C.

General Provisions. The general exceptions and other regulations set forth in Chapters 17.102, 17.104, 17.106, and 17.108 shall apply in the RD zones.

D.

Recycling Space Allocation Requirements. The regulations set forth in Chapter 17.118 shall apply in RD zones.

E.

Landscaping and Screening Standards. The regulations set forth in Chapter 17.124 and Chapter 17.102.400, screening of utility meters, etc., shall apply in the RD zones.

F.

Buffering. All uses shall be subject to the applicable requirements of the buffering regulations in Chapter 17.110 with respect to screening or location of parking, loading, storage areas, control of artificial illumination, and other matters specified therein.

(Ord. No. 13064, § 2(Exh. A), 3-15-2011)