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Do I need a Class A roof in the Peninsula hills or on the coast?

Short answerIf your home is in a mapped very high fire hazard severity zone, state law requires a Class A assembly when more than half the roof is replaced. On the Peninsula that's most likely in foothill and coastside areas. Check the 2025 state map for your address, then confirm with your building department.

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Updated · Sources reviewed November 11, 2026 · By San Mateo Roof Replacement

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Where are the Peninsula's fire zones?

The state revised its fire hazard severity zone maps in 2025. Foothill communities such as Woodside, Portola Valley, parts of Belmont and San Carlos, and the hills above Half Moon Bay are the places to check first on the OSFM map.

What roof materials are Class A?

The Department of Insurance lists asphalt shingles, concrete, brick or masonry tiles, and metal shingles or sheets as roofs that generally qualify. Wood shake shingles are not Class A (Safer from Wildfires).

Does Class A help with insurance?

Yes. A Class A roof is one of the Safer from Wildfires mitigation steps that California insurers must recognize with discounts. Keep the permit, invoice and product listing to show your insurer.

What else matters besides the roof covering?

Vents, gutters and the roof-to-wall edges are where embers get in. Ask the roofer about ember-resistant vents and gutter guards while the roof is open.

Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.

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Frequently asked questions

Is my Woodside home in a fire zone?

Check your exact address on the state's 2025 fire hazard severity zone map; zone lines don't follow town boundaries.

Does wood shake qualify for discounts?

No. The Department of Insurance says wood shake shingles are not Class A.

What should I give my insurer after the new roof?

The final permit, invoice and the roof's Class A product listing.

Sources

Sources reviewed November 11, 2026. Figures are published estimates and official fees, not quotes. Confirm prices, permits and requirements with your contractor and building department. This page is general information, not legal or insurance advice.