Oakley, CA Building Safety: Building Permits (2026)

Oakley adopts the California Building Code, Residential Code, Mechanical, Plumbing, Electrical, Energy (Title 24 Part 6), and Green Building Standards (CALGreen) Codes with local amendments. Permits are required for new construction, additions, alterations, re-roofs, electrical service upgrades, water heater replacement, HVAC change-outs, window replacement (some exceptions), decks over 30 inches, retaining walls over 4 feet, swimming pools, and most accessory structures. Minor repairs, paint, floor coverings, and one-story detached accessory buildings under 120 square feet that are not used for habitation may be exempt from building permits but zoning review still applies. Applications are filed with the Community Development Department at 3231 Main Street. Plan check times run roughly 2–4 weeks for residential; over-the-counter permits are available for simple projects like water heaters and re-roofs. Inspections must be scheduled through the online portal. Work performed without required permits is subject to investigation fees (typically double the permit fee), stop-work orders, and potential liens. Contractors must be licensed by the Contractors State License Board (CSLB); homeowners performing work on their own primary residence may qualify for the owner-builder exemption under Business and Professions Code section 7044 but must sign the owner-builder declaration acknowledging tax and liability consequences. All work must also comply with the 2022 California Energy Code and CALGreen mandatory measures including low-flow fixtures, EV-ready wiring for new construction, and construction waste diversion of at least 65 percent.