Home / Counties / California / Orange County

Building permits in Orange County, California

Find the right authority before you build. Orange County permitting follows California law — here is exactly who issues the permit and where to start.

County + cities (mixed)

Orange County Public Works — Development Services (Building & Safety)

The Orange County Development Services (Building & Safety) issues permits for the county’s unincorporated areas. Within Orange County’s incorporated cities (Anaheim, Santa Ana, Irvine, Huntington Beach, etc.) the city building department issues the permit.

Open the official permit portal →

Permits and inspections for unincorporated Orange County are submitted through the myOCeServices / Land Management System (myoceservices.ocgov.com).

Permit cheat-sheet (California rules)

Project	Permit?	Authority	Typical fee	Timeline	Go / No-Go	Key notes
🏠 Accessory Dwelling Unit (ADU)	Permit required	city	Permit and plan-check fees set by the local jurisdiction; state law limits impact fees on ADUs. Verify with the city building department.	~3–6 months for full plan review; many cities offer pre-approved plans or over-the-counter review.	Generally allowed	State law (Gov. Code §65852.2) requires cities to approve ADUs ministerially by right in most zones; local design review is limited to objective standards. Local fees, setbacks, and coastal/historic overlays still apply. Exempt: By-right up to 1,200 sq ft (≤800 sq ft for a 1-bedroom unit) under state law.
🪵 Deck / Porch	Conditional	city	Set by the city — typically a flat fee plus a valuation-based fee. Verify with the city building department.	Same-day Over-the-Counter for low decks (SF); 2–4 weeks elsewhere.	Generally allowed	Attached decks and any deck over 30 in above grade need a permit. SF issues Over-the-Counter permits for decks less than 10 ft above grade that meet setbacks. Exempt: Decks over 30 in (760 mm) above grade require a permit; lower decks are often exempt.
🧱 Fence / Wall	Conditional	city	Usually no building permit under the height threshold; zoning setback rules apply. Verify locally.	SF: Over-the-Counter same day for fences over the threshold.	Generally allowed	Height and front-yard limits are set by local zoning; masonry or sight-obstruction fences near intersections may need review. HOA covenants may also apply. Exempt: No permit for fences under ~6 ft in side/rear yards (SF: ≤6 ft side/rear, ≤3 ft front exempt).
🛖 Shed / Outbuilding	Conditional	city	No fee under the exemption; a permit fee applies if over the threshold.	Over-the-Counter / same day where a permit is required.	Generally allowed	Larger or occupied/serviced sheds require a building permit. Check local setbacks and HOA rules. Exempt: One-story detached accessory structure ≤120 sq ft is exempt (CBC R105.2).
🪜 Basement Finish	Permit required	city	Valuation-based building permit fee. Verify with the city building department.	2–6 weeks.	Generally allowed	Finishing a basement adds habitable space and triggers egress requirements (CBC R310); a sleeping room needs a code-compliant egress window. Exempt: N/A
🚗 Garage / Carport	Permit required	city	Valuation-based fee; flat plus per-square-foot. Verify with the city building department.	2–8 weeks.	Generally allowed	A new detached or attached garage requires a full building permit; conversions of an existing, legally established garage may be exempt if no structural change occurs. Exempt: N/A
☀️ Rooftop Solar PV	Permit required	city	Electrical permit fee set by the city; state law requires streamlined review for agencies above 50,000 population.	Streamlined (often 1–3 days via SolarAPP+ where adopted); 2–4 weeks otherwise.	Generally allowed	Rooftop PV requires an electrical permit. California requires local agencies above 50,000 population to provide streamlined solar permitting. Exempt: N/A
🌡️ HVAC Replacement	Permit required	city	Mechanical permit fee set by the city. Verify with the city building department.	1–2 weeks.	Generally allowed	Furnace, AC, or heat-pump replacement requires a mechanical permit and California Title 24 energy compliance. Exempt: N/A
🍳 Kitchen Remodel	Permit required	city	Building + electrical + plumbing permit fees. Verify with the city building department.	2–6 weeks.	Generally allowed	Moving plumbing/electrical or walls triggers permits; California Title 24 appliance and ventilation requirements apply. Exempt: N/A
🛁 Bathroom Remodel	Permit required	city	Building + plumbing + electrical fees. Verify with the city building department.	2–6 weeks.	Generally allowed	Ventilation (Title 24) and waterproofing are required; relocating plumbing needs permits. Exempt: N/A
🏗️ Room Addition	Permit required	city	Valuation-based building permit; impact fees may apply. Verify with the city building department.	3–8 weeks.	Generally allowed	Expanding the footprint requires full plan review, zoning compliance with setbacks, and Title 24. Exempt: N/A
🪟 Window / Door Replacement	Conditional	city	Permit fee if changing the opening; in-kind swap is often Over-the-Counter.	SF: same-day Over-the-Counter in-kind replacement.	Generally allowed	Changing the opening size or adding egress windows requires a permit; replacement must meet the energy code. Exempt: In-kind replacement (same size/location) typically needs no permit.
🏘️ Roof Replacement	Conditional	city	Roofing permit fee set by the city; in-kind shingle re-roof may be Over-the-Counter.	SF: same-day Over-the-Counter reroofing.	Generally allowed	Re-roofing usually requires a permit; structural deck replacement triggers a full building permit. Exempt: Tear-off / re-roof is generally permitted work.
🅿️ Driveway / Parking Pad	Conditional	city	No building permit for private flatwork; a right-of-way/curb cut needs a separate permit.	Varies.	Generally allowed	A curb cut or work in the public right-of-way requires a separate permit from the city / public works. Exempt: N/A
🏊 Swimming Pool / Spa	Permit required	city	Building permit + electrical; fee set by the city. Verify with the city building department.	3–8 weeks.	Generally allowed	Pools require a permit and a compliant barrier (CBC Chapter 42 / Health & Safety Code §115920): self-closing/self-latching gate and alarms. Exempt: N/A
🧱 Retaining Wall	Conditional	city	No fee under the exemption; a permit applies if over the threshold.	2–4 weeks if required.	Generally allowed	Walls over 4 ft or supporting a surcharge (deck, vehicle, structure) require design and a permit. Exempt: Retaining walls ≤4 ft (measured bottom of footing to top), not supporting a surcharge, are exempt (CBC R105.2).

Sources: Orange County (CA) Public Works — Development Services · CA Building Standards Commission — California Building Standards Code (Title 24) · CA Dept. of Housing & Community Development — Accessory Dwelling Units (ADU/JADU)