How busy is the Excelsior for reroofs?
The Excelsior reroofs are steady business: DataSF lists 1,088 permits mentioning reroofing in the Excelsior and Outer Mission planning areas between 2016 and 2025 (DataSF), 11th among the city's 40 planning areas. By ZIP code, ZIP 94112: median home built 1941, 66% of occupied homes owner-occupied, 51% detached houses (ACS 2024 5-year via Census Reporter).
What climate zone is the Excelsior in?
Title 24 assigns the Excelsior to climate zone 3, the cool coastal zone (CEC climate zones by ZIP). NOAA's 1991-2020 normals for the downtown San Francisco station show about 22.9 inches of precipitation a year, 59% of it in December, January and February. It rarely gets hot: about 3 days a year reach 90 degrees, so moisture, not heat, is what ages roofs. (NOAA normals)
What surprises turn up on older Excelsior roofs?
Many of these houses have had two or three roofs already. When old layers come off, roofers often find board sheathing rather than plywood; ask how the bid handles gaps or rot in the boards.
What kinds of roofs are common in the Excelsior?
The Excelsior and the Outer Mission are neighborhoods of detached and semi-detached single-family homes, many built between the 1910s and the 1940s. Roughly half of homes in ZIP 94112 are detached houses, and about two-thirds are owner-occupied, so a lot of roofs here are owners' decisions, not associations'.
How do I get a written estimate in the Excelsior?
For your actual price, request a free written estimate: a licensed roofer measures the roof and prices your exact scope. Before you compare bids, read what drives roof replacement cost and our page on San Francisco roofing contractors. Nearby town guides: Noe Valley, Bernal Heights, Visitacion Valley, Bayview.
Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.
Get a free replacement quoteFrequently asked questions
Do Excelsior homes usually need a full tear-off?
Often. California's residential code doesn't allow a new roof over two or more existing layers, and many older Excelsior roofs already have two.
Who issues reroof permits in the Excelsior?
San Francisco's Department of Building Inspection. Licensed C-39 contractors can apply online for a reroofing permit when no structural work is needed.
Can I get a firm price for an Excelsior roof without an inspection?
No. A roofer needs to measure the roof, count layers, check the pitch and look at the deck from the attic before a price is firm.
Sources
Sources reviewed November 12, 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.