Room Addition Permit Requirements in Temple City, CA
Temple City is an incorporated LA County contract city that issues building permits under its own name through the City Community Development Department's Building & Safety Division at City Hall. Day-to-day building official, plan check, inspection, and permit-counter services are contracted to a private firm, Transtech Engineers, Inc., which has provided these services since 2012, so inspections are contracted but the AHJ is the city. Plan check and permit fees (except encroachment) are set at 120 percent of the County of Los Angeles fee schedule and the city directs applicants to LA County Public Works for the base amounts. California enforces statewide Title 24, currently the 2025 California Residential Code (based on the 2024 IRC) effective January 1, 2026.
By Joey, Founder · Last verified June 4, 2026 · How we research →
When you need a Addition permit
CA (ZIP 91780), any habitable-space addition requires a building permit from the City of Temple City Building & Safety Division (9701 Las Tunas Drive, (626) 285-0488) under the 2024 IRC (2025 California Residential Code), plus electrical and plumbing permits as applicable. Plans must show Title 24 Part 6 energy compliance and seismic detailing and are submitted electronically via e-PlanSoft, with plan check and inspections contracted to Transtech Engineers. Plan check and permit fees are set at 120 percent of the Los Angeles County fee schedule.
Room Addition Permit Costs: Temple City vs. Nearby
| City | Estimated Fee |
|---|---|
| Temple City | N/A |
| Los Angeles | $1,000 – $20,000 |
| Sacramento County | $200 – $2,000 |
| San Diego | $850 – $17,000 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all Temple City permit costs →
Zoning Considerations
Room additions typically require zoning review for setbacks, height limits, and lot coverage. Your addition must comply with your zoning district's building envelope requirements.
Estimated Project Timeline
Here's a typical timeline for a room addition project:
Timeline is based on the typical about 4 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 Room Addition permit fee information. Fees typically vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Room Addition 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 Room Addition permits is about 4 weeks. More complex projects may take longer if plan review is required.
Learn More About Room Addition Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Room Addition Guide →