Before You Build in Oakley, CA: Permit & Rule Checklist (2026)

Fences up to 6 feet in height in Oakley generally do not require a building permit, but fences over 6 feet, retaining walls over 4 feet, and pool enclosures all require permits from the Oakley Community Development Department. All fences must still meet zoning and setback rules.

Boundary fence disputes in Oakley are governed by California Civil Code Section 841 (Good Neighbor Fence Act), which presumes equal cost-sharing for boundary fences between adjoining owners and requires 30 days written notice before construction. Oakley does not mediate these civil disputes directly.

Oakley limits front yard fences to 3.5 feet in height and rear/side yard fences to 6 feet, with corner lot sight-triangle restrictions near intersections. Fences over 6 feet require a building permit, and agricultural-zoned parcels may allow taller fences for livestock.

A building permit is required for every in-ground and above-ground pool over 18 inches deep or 5,000 gallons in Oakley. Plans must show barrier compliance with HSC 115923, electrical bonding per NEC Article 680, drain covers meeting the Virginia Graeme Baker Act, and proper separation from setbacks and overhead utilities.

Oakley pools must comply with California's layered pool safety framework: barriers under HSC 115923, two approved drowning prevention features under HSC 115922, anti-entrapment drain covers under the Virginia Graeme Baker Act, and electrical safety per NEC 680. Real estate transfers require a pool safety disclosure.

Oakley enforces the California Swimming Pool Safety Act (Health & Safety Code §§115920-115929) and California Building Code §3109. Residential pools and spas deeper than 18 inches require a barrier at least 60 inches high, with self-closing and self-latching access gates that have the release device located at least 60 inches above grade and that swing outward away from the pool. New or remodeled pools must include at least two of seven approved drowning prevention features, verified by the Oakley Building Division at 3231 Main Street.

Oakley complies with California Gov Code §65852.2 (statewide ADU law). Single-family lots may have one ADU plus one JADU. Maximum ADU size: 1,200 sq ft; no minimum lot size restriction. Setbacks: 4 ft from side/rear property lines (new detached ADU). Minimum height: 16 ft. ADUs under 750 sq ft are exempt from impact fees. ADU permit applications processed in 60 days maximum.

Garage conversions to living space in Oakley require building permits and must comply with California residential building codes. Conversions may qualify as ADUs or JADUs under CA Gov Code §65852.22. Replacement parking is not required within ½ mile of transit (AB 2097). Contact the Oakley Building Division at (925) 625-7005.

Permanent foundation tiny homes in Oakley are regulated as ADUs under state law and must meet California Residential Code minimums (typically 150 sq ft minimum for efficiency units plus kitchen and bathroom). Tiny homes on wheels (THOWs) registered as recreational vehicles cannot be used as permanent dwellings in most zones. Movable tiny houses built to ANSI A119.5 standards may be permitted as ADUs where allowed by local ordinance. HCD-certified factory-built homes qualify for expedited ADU approval.

Accessory structures (sheds, detached storage buildings) in Oakley require building permits based on size and use. Sheds must be at least 5 feet from fences (3 feet if metal or non-combustible material). Setbacks from property lines apply per the Oakley Zoning Code. Contact the Oakley Building Division at (925) 625-7005 for permit requirements.

Open burning of yard waste, trash, and vegetation is prohibited year-round in Oakley. BAAQMD Regulation 5 and ECCFPD rules ban agricultural burning in most circumstances, and no-burn days affect even permitted activities. Residential recreational fires in approved appliances are allowed subject to Fire Code Section 307 limits. Violators face fines up to $1,000 under Public Resources Code Section 4423 plus BAAQMD penalties.

Outdoor wood-burning fire pits in Oakley are restricted by BAAQMD Regulation 5. Natural gas fire features may be permitted with appropriate building permits from the City of Oakley Building Division. No burning is permitted on Spare the Air days. Contact East Contra Costa Fire Protection District for specific permit requirements.

Protected trees in Oakley require a permit before removal or major trimming. Tree protection is based on trunk size and species. Property owners must obtain a tree permit from the City before cutting down, topping, or filling within the dripline of a protected tree. Contact Oakley Planning at (925) 625-7052 to determine if a tree is protected.

Contra Costa Water District (CCWD) and East Contra Costa Irrigation District (ECCID) serve Oakley and may impose mandatory water use restrictions during drought conditions. Prohibitions on watering within 48 hours of rain and bans on runoff into streets are enforced. Visit ccwater.com or eccid.com for current restrictions.