(A)
Purpose. It is the purpose of this section to provide for the orderly regulation of accessory structures to ensure that accessory structures are subordinate and incidental to the main structure or main use of the land and to provide notice to future and current property owners that illegal conversion of any accessory structure is subject to civil penalties. This section does not address accessory dwelling units (ADUs), nor is an accessory structure in a residential zone district considered an ADU.
(B)
Application Requirements.
(1)
The proposed use of the structure shall be specified.
(2)
Applications for habitable accessory structures and non-habitable accessory structures shall be processed as specified in Tables 13.10.611-1 and 13.10.611-2.
(3)
The regulations of this section are intended to complement and be implemented consistent with the allowed uses in residential zone districts listed in SCCC § 13.10.322(A).
(C)
Restriction on Accessory Structures.
(1)
Any accessory structure shall be clearly appurtenant, subordinate, and incidental to the main structure or main use of the land as specified in the purposes of the appropriate zone district.
(2)
Regulations on amenities for accessory structures on parcels with a main residence are as indicated in Table 13.10.611-1:
Table 13.10.611-1: Amenities Regulations for Accessory Structures in Residential Zone Districts | ||
|---|---|---|
Amenity | Non-Habitable | Habitable |
Utility sink: outdoor non-enclosed shower | Allowed | Allowed |
Toilet, lavatory sink1 | Allowed1 | Allowed1 |
Shower and/or bathtub | Pool cabanas: Shower allowed1 All other uses: Not allowed | Allowed1 |
Washer/dryer and water heater | Allowed | Allowed |
Insulation/sheet rock or other finished wall covering | Both allowed | Both required |
Built-in heating/cooling | Not allowed | Heating: Required Cooling: Allowed |
Kitchen facilities, excluding sink, as defined in SCCC § 13.10.700-K | Not allowed | Not allowed, unless approved as an ADU under SCCC § 13.10.681. |
Electrical service maximum | 100A/220V/single phase maximum unless an administrative use permit is obtained. | 100A/220V/single phase maximum unless an administrative use permit is obtained. |
Separate electric meter | Not allowed unless an administrative use permit is obtained. | Not allowed unless an administrative use permit is obtained. |
Use for sleeping purposes | Not allowed | Allowed |
Rent or lease as an independent ADU | Not allowed | Not allowed, unless approved as an ADU under SCCC § 13.10.681 with standard kitchen. |
1. On parcels less than 10 acres, a maximum of one habitable or non-habitable accessory structure with any combination of toilet, lavatory sink, shower and/or bathtub is permitted if consistent with Tables 13.10.611-1 and 13.10.611-2. On parcels 10 acres or larger, a maximum of two accessory structures with any combination of toilet, lavatory sink, shower, and/or bathtub are permitted if consistent with Tables 13.10.611-1 and 13.10.611-2. When two or more habitable accessory structures exist on a parcel, the second habitable accessory structure and any additional habitable accessory structures shall be considered bedrooms for the purpose of calculating fees and determining parking requirements. |
(3)
Regulations for permit requirements, size, height, stories, total number of, and locational restrictions for accessory structures in residential zone districts are as indicated in Table 13.10.611-2:
Table 13.10.611-2: Permit Requirements, Size, Height, Stories, Total Number of, and Locational Regulations for Accessory Structures in Residential Zone Districts | ||
|---|---|---|
Non-Habitable | Habitable | |
Height limit | Within the urban and rural services lines (USL/RSL): Detached garages: 16 feet All other accessory structures: 13 feet1 Attached garages: see zone district height limit Outside the USL/RSL: see zone district height limit | Within the USL/RSL: 13 feet Outside the USL/RSL: see zone district height limit |
Size limit | Within the USL/RSL: 640 square feet Outside the USL/RSL: 1,000 square feet | Within the USL/RSL: 640 square feet Outside the USL/RSL: 1,000 square feet |
Permit required | Within the USL/RSL: building permit only for structures meeting height and size limits1 Outside the USL/RSL: building permit only for up to 1,000-square-foot size, in compliance with zone district site development standards1 | Within the USL/RSL: building permit only for structures meeting height and size limits1 Outside the USL/RSL: building permit only for up to 1,000-square-foot size, in compliance with zone district site development standards1 |
Permit required if exceeds size limits | Administrative site development permit | Administrative site development permit |
Permit required if exceeds maximum height or story limits | Variance (public hearing required) | Variance (public hearing required) |
Number of accessory structures allowed | No limit, if in compliance with the site regulations of the zone district; however, limits based on parcel size if accessory structure contains plumbing fixtures2 | One with building permit only; two with conditional use and site development permit; more than two with Planning Commission public hearing and approval, with limits on plumbing fixtures2 |
Locational restrictions related to the distance from the main residence and access to accessory structures | None, if in compliance with the site regulations of the zone district | In addition to the site regulations of the zone district, shall be no more than 100 feet from the main residence, shall not be accessed by a separate driveway or right-of-way, nor constructed on a slope greater than 30 percent, unless an administrative site development permit is obtained, or as otherwise permitted by County Code/Public Works Director |
1. Non-habitable structures that do not exceed 120 square feet in size and a height of 10 feet above grade (as defined by the Zoning Ordinance) do not require a building permit. However, a plumbing or electrical permit is required for any plumbing fixtures and electricity, and a zoning permit may be required pursuant to Tables 13.10.611-1 and 13.10.611-2. |
2. On parcels less than 10 acres, a maximum of one habitable or non-habitable accessory structure with any combination of toilet, lavatory sink, shower, and/or bathtub may be permitted consistent with Tables 13.10.611-1 and 13.10.611-2. On parcels 10 acres or larger, a maximum of two accessory structures with any combination of toilet, lavatory sink, shower, and/or bathtub may be permitted consistent with Tables 13.10.611-1 and 13.10.611-2. When two or more habitable accessory structures exist on a parcel, the second habitable accessory structure and any additional habitable accessory structures shall be considered bedrooms for the purpose of calculating fees and determining parking requirements. ADUs are regulated by SCCC § 13.10.681. |
(4)
Absent an established residential use, accessory structures are prohibited.
(5)
No habitable accessory structure shall be mechanically heated, cooled, humidified, or dehumidified unless the structure or the conditioned portion thereof meets the energy conservation standards of the California Energy Code, Title 24, as adopted by Chapter 12.10 SCCC.
(6)
No non-habitable accessory structure (other than a pool cabana) shall have a shower or bathtub installed, and no pool cabana shall have a bathtub installed. The Planning Director may grant an exception to allow a bathtub in a pool cabana as a reasonable accommodation pursuant to the Americans with Disabilities Act.
(D)
Development Standards for Residential Accessory Structures. Accessory structures shall be required to meet the same development standards as primary dwellings, with the following exceptions:
(1)
Water Tanks and Propane Tanks. Water tanks that are required for fire protection and/or domestic use may be erected to within three feet of any property line; provided, that the proposed location is a written requirement from the County Fire Marshal, appropriate fire agency or Environmental Health Services. Propane/LP gas tanks may be erected to within five feet of any property line; provided, that the proposed location is a written requirement from the County Fire Marshal or appropriate fire agency. A landscaped screen shall be provided for any tank located within the required front yard.
(2)
Detached Sheds. A detached accessory structure that is smaller than 120 square feet in size and 10 feet or less in height may be constructed to within three feet of the side and rear property lines.
(3)
Garden trellises, garden statuary, birdbaths, freestanding barbeques, play equipment, swimming pool equipment, freestanding air conditioners, heat pumps, and similar HVAC equipment and ground-mounted solar systems, if not exceeding six feet in height, are not required to maintain side and rear yard setbacks and are excluded from the calculation of allowable lot coverage.
(4)
Eaves, chimneys, cantilevered, uncovered, unenclosed balconies, porches, decks, and uncovered, unenclosed stairways and landings may encroach three feet into required setbacks.
(5)
ADUs. See SCCC § 13.10.681 for development standards governing ADUs. Buildings with first story garages and second story ADUs over them may apply ADU development standards.
(6)
Garages in Rear or Side Yards.
(a)
On residentially zoned parcels smaller than 10,000 square feet, an attached or detached garage as defined under SCCC § 13.10.700-G (but excluding carports) may be located within side and rear setback areas with up to a 50 percent reduction of the required setback distances to the rear and interior side property lines; provided, that:
(i)
There shall be no windows, doors, or other openings on garage walls that are less than five feet from the side or rear property lines.
(ii)
The garage shall have a minimum front setback of 40 feet, or, for parcels less than 80 feet deep, the minimum front setback to the garage shall be 50 percent of the parcel's depth.
(iii)
Eaves or other projections on garages with reduced setbacks shall extend no more than two additional feet closer to the rear and side yard property lines, and no closer than allowed by the California Residential Code (CRC).
(iv)
The garage shall have a maximum depth of 30 feet.
(b)
On residentially zoned parcels smaller than 10,000 square feet, an attached or detached garage as defined under SCCC § 13.10.700-G (but excluding carports) may be located up to zero feet from the rear or interior side property line if an administrative site development permit is obtained pursuant to the provisions of Chapter 18.10 SCCC, and it is found that the garage will not be detrimental or injurious to property or improvements in the neighborhood, and will not unreasonably infringe on adequate light, air, or privacy of adjacent residences.
(c)
On residentially zoned parcels 10,000 square feet or larger in size, an attached or detached garage as defined under SCCC § 13.10.700-G (but excluding carports) may be located within side and rear setback areas with up to a 50 percent reduction of the required setback distances to the rear and interior side property lines, subject to subsections (D)(7)(a)(i) through (D)(7)(a)(iv) of this section; and provided, that a minor exception is obtained in accordance with SCCC § 13.10.235.
(d)
A garage located within a required rear or side setback area shall not exceed 13 feet in height or one story, unless a variance is obtained pursuant to Table 13.10.611-2 and the provisions of Chapter 18.10 SCCC, and it is found that the garage will not be detrimental or injurious to property or improvements in the neighborhood, and will not unreasonably infringe on adequate light, air, or privacy of adjacent residences.
(7)
Separation. The minimum separation between an accessory structure and any other structure on a parcel, including encroachments included in subsection (D)(6)(a) of this section, shall be no less than three feet, or as provided by the California Building Code, whichever is greater, with the following exceptions:
(a)
No separation is required between water tanks located on the same parcel.
(b)
No separation is required between garden trellises, garden statuary, birdbaths, freestanding barbecues, play equipment, swimming pool equipment, freestanding air conditioners, heat pumps and similar HVAC equipment and ground-mounted solar systems and other structures located on the same parcel.
(8)
Corner Lots. On corner lots, accessory structures shall be located not closer to the rear property line than the required side yard setback on the adjoining lot, and not closer to the side property line adjoining the street than the required front yard setback of the adjoining lot.
(9)
Distance from Alleys. Detached accessory structures including garages shall not be located within three feet of any alley.
(E)
Any building or development permit issued for the construction or renovation of a non-habitable accessory structure shall include a restriction or condition requiring an agreement not to convert the structure into a dwelling unit, ADU, or any structure for human habitation in violation of this code. Any building or development permit issued for the construction, conversion to, or renovation of a habitable accessory structure, other than an attached or detached ADU, permitted as such, shall include a condition requiring an agreement not to convert the structure or space into a dwelling unit or into any other independent habitable structure in violation of this code. Each agreement required by this subsection shall provide for the recovery by the County of reasonable attorney's fees and costs in bringing any legal action to enforce the agreement together with recovery of any rents collected for the illegal structure or, in the alternative, for the recovery of the reasonable rental value of an illegally converted structure from the date of conversion. The amount of any recovery of rents or of the reasonable rental value of an illegally converted structure shall be deposited into a fund designated by the Board of Supervisors to be used by the County for code compliance and abatement activities. The agreement shall provide for periodic condition compliance inspections by Planning Department staff. Nothing in this section or the agreement shall be deemed to be a waiver of any property owner's rights to due process or to avoid unreasonable searches. The agreement shall be written to bind future owners of the property and include a reference to the deed under which the property was acquired by the present owner, and the agreement shall be filed with the County Recorder. Proof that the agreement has been recorded shall be furnished to the County prior to the granting of any building permit permitting construction on the property.
(F)
The Planning Director may charge a fee, as stated in the unified fee schedule, for the cost of periodic condition compliance inspections.
(Ord. 3432 § 1, 1983; Ord. 3593 §§ 14, 15, 1984; Ord. 3632 § 16, 1985; Ord. 3749 § 1, 1986; Ord. 3996 § 1, 1989; Ord. 4099 § 1, 1990; Ord. 4282 § 4, 1993; Ord. 4324A § 4, 1994; Ord. 4457-A § 3, 1997; Ord. 4496-C § 52, 1998; Ord. 4921 § 14, 2008; Ord. 5061 §§ 16, 17, 2009; Ord. 5264 § 11, 2018; Ord. 5265 § 10, 2018; Ord. 5346 § 3, 2020; Ord. 5366 § 3, 2021; Ord. 5423 § 22, 2022)