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Permitting Authorities / City of Redwood City - Building & Code Enforcement Services

Do you need a permit to replace a roof in Redwood City, CA?

Adopted code

City of Redwood City - Building & Code Enforcement Services

The City of Redwood City Building Division, which runs Building & Code Enforcement Services for the Community Development Department at 1017 Middlefield Road, takes building permit applications, reviews plans and inspects construction in Redwood City, in San Mateo County. The 2025 California Residential Code applies in Redwood City as it does in every California city and county. This listing covers the office's contact details and the rules state law sets for every California town; it does not cover Redwood City's own permit rules.

Jurisdiction
City of Redwood City, California
Jurisdiction type
city
Address
1017 Middlefield Road, Redwood City, CA 94063
Contact
  • url: https://www.redwoodcity.org/departments/community-development-department/building-inspection-code-enforcement
  • phone: 650-780-7350
Contractor registration required
Required
Adopted code
The 2025 California Residential Code (California Code of Regulations, Title 24, Part 2.5), which "incorporates by adoption the 2024 International Residential Code of the International Code Council with necessary California amendments" (California Residential Code section 1.1.1) and took effect on January 1, 2026. It applies to "every detached one- and two- family dwelling and townhouse not more than three stories above grade plane ... throughout the State of California" (section 1.1.3). State law makes it apply in every city and county: "If any city or county does not amend, add, or repeal ordinances or regulations to impose those requirements or make changes or modifications in those requirements upon express findings, the provisions published in the California Building Standards Code ... shall be applicable to it" (Health and Safety Code 17958(a)). A city or county may change the code only where it finds the change "reasonably necessary because of local climatic, geological, or topographical conditions" (Health and Safety Code 17958.5(a)), and "No modification or change shall become effective or operative for any purpose until the finding and the modification or change have been filed with the California Building Standards Commission" (Health and Safety Code 17958.7(a)). From October 1, 2025 to June 1, 2031, a city or county "shall not make changes that are applicable to residential units" unless, among other listed conditions, the changes are "substantially equivalent to changes or modifications that were previously filed by the governing body of the city or county and were in effect as of September 30, 2025" or "relate to home hardening" (Health and Safety Code 17958(b)). So a city may have its own amendments to the state code, and this record did not read this city's local amendments. Everything above is California state law, the same in every city and county. In Redwood City the City's own Building Division, part of the Community Development Department, enforces the code through its Building & Code Enforcement Services, whose page covers building permit submittal, plan review and building inspection.

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Sources

Roofing questions: Redwood City, CA

Do roofing contractors need a license or registration in Redwood City, CA?

Yes.

What building code does Redwood City, CA use?

The 2025 California Residential Code (California Code of Regulations, Title 24, Part 2.5), which "incorporates by adoption the 2024 International Residential Code of the International Code Council with necessary California amendments" (California Residential Code section 1.1.1) and took effect on January 1, 2026. It applies to "every detached one- and two- family dwelling and townhouse not more than three stories above grade plane ... throughout the State of California" (section 1.1.3). State law makes it apply in every city and county: "If any city or county does not amend, add, or repeal ordinances or regulations to impose those requirements or make changes or modifications in those requirements upon express findings, the provisions published in the California Building Standards Code ... shall be applicable to it" (Health and Safety Code 17958(a)). A city or county may change the code only where it finds the change "reasonably necessary because of local climatic, geological, or topographical conditions" (Health and Safety Code 17958.5(a)), and "No modification or change shall become effective or operative for any purpose until the finding and the modification or change have been filed with the California Building Standards Commission" (Health and Safety Code 17958.7(a)). From October 1, 2025 to June 1, 2031, a city or county "shall not make changes that are applicable to residential units" unless, among other listed conditions, the changes are "substantially equivalent to changes or modifications that were previously filed by the governing body of the city or county and were in effect as of September 30, 2025" or "relate to home hardening" (Health and Safety Code 17958(b)). So a city may have its own amendments to the state code, and this record did not read this city's local amendments. Everything above is California state law, the same in every city and county. In Redwood City the City's own Building Division, part of the Community Development Department, enforces the code through its Building & Code Enforcement Services, whose page covers building permit submittal, plan review and building inspection.