ADU Permit Requirements in King City, CA
CORRECTION: the department line is 831-385-3281; the previously listed 831-386-5915 is the Chief Building Official Mark McClain's direct line (mmcclain@kingcity.com). The City of King Building & Safety Department is the AHJ inside city limits, enforcing the California Building Standards Code (Title 24), which for 1- and 2-family dwellings is the 2022 California Residential Code, together with King City Municipal Code Title 12. Permits are submitted through the City's CitizenServe online portal (verified live). No standalone fee schedule is published online, so per-project fees should be confirmed with the department.
By Joey, Founder · Last verified May 31, 2026 · How we research →
When you need a ADU permit
An accessory dwelling unit (ADU) or junior ADU is streamlined under California state ADU law (administered by the City of King Building & Safety Department) and built to the 2022 CRC plus Title 24. State law sets 4-foot side/rear setbacks, a 60-day approval timeline, and fee reductions for small units. Submit through CitizenServe; per-project fees are set by the department.
ADU Permit Costs: King City vs. Nearby
| City | Estimated Fee |
|---|---|
| King City | N/A |
| Los Angeles | $750 – $7,500 |
| Sacramento County | $750 – $7,500 |
| San Diego | $750 – $7,500 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all King City permit costs →
Zoning & HOA Considerations
ADU regulations vary dramatically by state and city. Many states (CA, OR, WA) have preemption laws that override local zoning restrictions. Check both state law and local zoning before designing.
If you live in an HOA community: hOAs have traditionally restricted ADUs, but state preemption laws in CA, OR, WA, and other states now limit HOA authority over ADUs. Check your state's ADU laws, your HOA may not be able to block construction even if CC&Rs appear to prohibit it.
Estimated Project Timeline
Here's a typical timeline for a adu project:
Timeline is based on the typical about 9 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
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Frequently Asked Questions
Contact the building department for current ADU permit fee information. Fees typically vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller ADU projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for ADU permits is about 9 weeks. More complex projects may take longer if plan review is required.
If you live in an HOA community, you may need architectural review approval in addition to a building permit. HOA rules and city building codes are separate, you may need to satisfy both. Review your CC&Rs and submit to your HOA's architectural review committee before starting work.
Learn More About ADU Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read ADU Guide →