San Fernando Valley Reroof Facts.

This page covers the parts of the San Fernando Valley inside the City of Los Angeles. That means areas such as Granada Hills, Reseda, Woodland Hills, Sylmar, Van Nuys and Sunland-Tujunga. Burbank, San Fernando and Glendale are separate cities with their own building departments, so the numbers below do not include them.

Rules that apply across the whole city, such as the wood shake ban and LA's cool roof ordinance, are on our Los Angeles area guide.

The Valley files almost half the city's reroof permits

We counted reroof permits in the city's open permit data. A permit counts if its work description says "reroof," "re-roof" or "re roof." We grouped them by the 14 Valley community plan areas listed in the data.

That is about 46% of the 72,234 reroof permits the city issued in the same period. About 85% of the Valley permits were for 1 or 2 family homes.

The ZIP codes with the most permits were 91344 (1,724), 91335 (1,684), 91367 (1,377), 91342 (1,353), 91406 (1,329) and 91364 (1,245). By plan area, Canoga Park-West Hills-Winnetka-Woodland Hills led with about 5,800.

A permit is not the same as a finished job. Some roofs are replaced without a permit. Some permits describe the work in other words. Large ZIP codes also rank higher just because they have more homes.

Hillside fire zones, flat valley floor

The 2025 recommended fire hazard maps split the Valley sharply. We checked each permit address against the map data. Overall, about 14.5% of Valley reroof permits were at addresses in a Very High zone. The share depends on the plan area:

• Higher: Sherman Oaks-Studio City-Toluca Lake (about 61%), Sunland-Tujunga (43%), Encino-Tarzana (36%).
• Middle: Sylmar (19%), Chatsworth-Porter Ranch (17%), Sun Valley-La Tuna Canyon (17%).
• None found: Van Nuys, Reseda, North Hollywood, Northridge, Arleta-Pacoima and Mission Hills-Panorama City-North Hills.

This is our own overlay of public map data, and the city must adopt the maps by ordinance. Check a single address with the state's map viewer. In a Very High zone, the city's express reroof permit calls for a Class A roof. See Class A roofs and vents.

Mostly 1960s and 1970s houses

Census survey data (ACS 2024 5-year) shows median build years in the 1960s and 1970s for the busiest ZIPs:

Few homes here predate 1940. In most of these ZIPs it is 5% or less.

Climate zone 9 and the state cool roof rule

The Energy Commission's ZIP list puts most Valley ZIPs in Building Climate Zone 9. About 95% of the Valley permits we counted were in Zone 9 ZIPs. The state's 2025 energy code covers steep-slope reroofs in Zones 4 and 8 through 15, so Zone 9 is included when more than half the roof is replaced. Sunland-Tujunga (91040 and 91042) is listed as Zone 16, which is not on the steep-slope list. The city's own rule still applies. Read cool roofs in California for the values and exceptions.

Historic districts in the Valley

The city's list of Historic Preservation Overlay Zones includes Balboa Highlands, Stonehurst and Van Nuys. Its HPOZ screening form lists "Roof Repair/Reroof" as a project type. If your home is in one, the planning office may need to review the reroof.

For the general permit steps, see reroof permit basics.