Building permits in San Diego, CA

Short answer: In San Diego, permits are issued by City of San Diego Development Services Department; of the 16 common projects we checked, 8 always need a permit, 1 do not, and 7 depend on the details.

Permitting authority: City of San Diego Development Services Department. Applies inside the City of San Diego. Exemptions do not apply to designated historical resources, historic districts, or work that needs a development permit (for example environmentally sensitive lands).

Permit rules in San Diego
Project	Answer	Verified
ADU or garage conversion	Permit required Yes. Converting a garage at a house or duplex into living space needs a permit; Information Bulletin 142 explains the requirements.	2026-10-19
Deck	Depends on your project No permit for a freestanding deck of 200 sq ft or less, 30 in or less above grade, not attached to the house and not serving the required ex…	2026-10-19
Driveway or patio	No permit required No permit for sidewalks and driveways 30 in or less above grade, not over a basement and not part of an accessible route.	2026-10-19
Electrical panel upgrade	Permit required Yes. Minor electrical work, including circuit breakers from 15 to 400 amps, uses a Simple (no-plan) permit; above 400 amps needs a stand-alo…	2026-10-19
EV charger	Permit required Yes. EV charging stations for private garages use a Simple (no-plan) electrical permit.	2026-10-19
Fence	Depends on your project No building permit for fences 7 ft or less (except swimming pool barriers).	2026-10-19
HVAC / AC replacement	Permit required Yes. Installing furnaces or A/C units uses a Simple (no-plan) mechanical permit outside historic districts.	2026-10-19
Interior / bathroom remodel	Permit required Yes for a remodel. A kitchen or bath remodel with no structural, wall-framing or exterior-wall changes and no added fixtures qualifies for a…	2026-10-19
Pool or hot tub	Depends on your project Above-ground prefabricated pools up to 5,000 gallons sitting on grade at a house are exempt. In-ground pools need a permit.	2026-10-19
Retaining wall	Depends on your project No permit for retaining walls 3 ft or less (top of footing to top of wall) unless supporting a surcharge. Taller walls need a permit.	2026-10-19
Roof replacement	Depends on your project Most re-roofs need no permit: renewing roof covering is exempt when the existing roof structure, including the roof diaphragm, is not altere…	2026-10-19
Shed	Depends on your project No building permit for a one-story detached shed or playhouse with a projected roof area of 120 sq ft or less.	2026-10-19
Siding replacement	Permit required Yes. Replacing siding (or replacing siding with stucco) is a No-Plan Building Permit.	2026-10-19
Solar panels	Permit required Yes. Rooftop solar on a house, duplex or townhouse designed to the IB-301 template gets a self-issued, no-plan-review permit (up to 38.4 kW …	2026-10-19
Water heater replacement	Permit required Yes. Replacing a water heater needs a Simple (no-plan) plumbing permit for single-family homes and duplexes. Tankless heaters do not qualify…	2026-10-19
Window and door replacement	Depends on your project Replacing exterior windows and doors in the same openings at a house or townhouse is exempt if the wall envelope and rough openings are not …	2026-10-19

Fee schedule: https://www.sandiego.gov/development-services/what-permits-do-i-need

Other cities in California

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Not legal advice. Always confirm with your local building department. Rules change, and your parcel's zoning, HOA, historic district, floodplain or utility work can change the answer. We show the official source and the date we last checked it so you can verify for yourself.