Accessory Structures in El Cajon, CA (2026)
9 verified accessory structures rules for El Cajon, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
El Cajon allows one ADU plus one JADU per single-family lot. Maximum 1,200 sq ft but not larger than the primary dwelling. Setbacks of 5 ft allow 20 ft height, 4 ft allows 16 ft. El Cajon uniquely requires a sewer lateral video.
El Cajon ADU Rules
Some RestrictionsADU Permits
El Cajon processes ADU and JADU applications ministerially through the Community Development Department under ECMC Title 17 and California Government Code §65852.2. State law caps review at 60 days from a complete application. Detached ADUs are allowed up to 1,200 sq ft and JADUs up to 500 sq ft, with the by-right 4-foot side and rear setbacks for one-story units and a minimum 16-foot height.
El Cajon ADU Permit and Ministerial Review (ECMC Title 17)
Few RestrictionsADU Impact Fees
El Cajon waives all local impact fees on ADUs under 750 sq ft per California Government Code §65852.2(f)(3). ADUs 750 sq ft or larger pay impact fees proportional to the primary dwelling's square footage. Standard building permit and plan-check fees still apply through the Community Development Department fee schedule, and school district fees follow SB 13 proportional rules.
El Cajon ADU Impact Fee Exemption Under 750 sq ft
Few RestrictionsADU Owner Occupancy
El Cajon cannot require owner-occupancy on standard ADUs permitted after January 1, 2020 because California Government Code §65852.2(a)(6) — made permanent by AB 976 (2023) — preempts local owner-occupancy mandates. JADUs still require owner-occupancy of either the primary dwelling or the JADU under Gov. Code §65852.22, with a deed restriction recorded against title.
El Cajon ADU Owner-Occupancy (Preempted by State Law)
Few RestrictionsADU Rental Restrictions
El Cajon ADUs may only be rented for terms of 30 days or more under California Government Code §65852.2(a)(7). Short-term rentals under 30 days are not authorized for ADUs created after January 1, 2020. El Cajon has no broad citywide short-term rental permit program in the municipal code; long-term rental of an ADU is permitted without separate city licensing, subject to standard landlord-tenant law.
El Cajon ADU 30-Day Minimum Rental Rule
Some RestrictionsShed Rules
El Cajon regulates accessory structures through the zoning ordinance. Structures must comply with setback and height requirements. Sheds may not be in front yards. Building permits required for structures exceeding exempt thresholds.
El Cajon Shed & Accessory Building Rules
Some RestrictionsGarage Conversions
El Cajon allows garage conversions to ADUs per CA Gov Code Section 65852.2. Replacement parking is not required. Tandem parking in driveways is permitted. Building permits required for conversion.
El Cajon Garage Conversion Rules
Some RestrictionsCarport Rules
Carports in El Cajon require a building permit under Title 15 and must comply with the setback, height, and lot coverage standards in Title 17 Zoning. Detached carports in residential zones follow the same accessory structure rules as garages and sheds.
El Cajon Carport & Covered Parking Regulations
Some RestrictionsTiny Homes
El Cajon allows tiny homes as ADUs under California Government Code 65852.2 and ECMC Chapter 17.220. A tiny home on a permanent foundation that meets building code may qualify as a junior ADU (up to 500 sq ft) or standard ADU (up to 1,200 sq ft) without requiring separate zoning approval.
El Cajon Tiny Home & Small Dwelling Rules
Some RestrictionsLooking for San Diego County county-wide rules?
County ordinances apply to unincorporated areas and may supplement El Cajon city rules.
Accessory Structures in San Diego County →