How old are homes in the Richmond, and how often are roofs replaced?
From 2016 through 2025, the city issued 1,867 building permits in the Outer Richmond and Inner Richmond and Seacliff planning areas whose descriptions mention reroofing (DataSF building permits), third among the city's 40 planning areas. The housing behind those numbers, by ZIP code: ZIP 94121: median home built 1939 or earlier, 44% of occupied homes owner-occupied, 21% detached houses; ZIP 94118: median home built 1939 or earlier, 35% of occupied homes owner-occupied, 15% detached houses (Census ACS 2024 5-year).
What is the Richmond's climate like for a roof?
For building-code purposes, the Richmond is in climate zone 3, the cool coastal zone on the Energy Commission's map (CEC). NOAA's 1991-2020 normals for the San Francisco Oceanside station show about 20.6 inches of precipitation a year, 59% of it in December, January and February. It rarely gets hot: about 1 days a year reach 90 degrees, so moisture, not heat, is what ages roofs. (NOAA normals)
Does salt air affect Richmond District roofs?
The Outer Richmond takes the full force of the marine layer. Fog keeps roofs damp for days, and salt air corrodes drains and flashing, so ponding water and rusted scuppers are classic Richmond failures.
What kinds of roofs are common in the Richmond?
The Richmond mixes Edwardian flats and single-family row houses from the early 1900s through the 1930s with mid-century infill. Many have flat roofs over two or three units, so a reroof can mean coordinating with other owners or a building association, and access is often through a shared stairwell or a roof hatch.
How do I get a written estimate in the Richmond?
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: Sunset and Parkside, West of Twin Peaks, Noe Valley, Bernal Heights.
Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.
Get a free replacement quoteFrequently asked questions
Who signs off on a reroof in a Richmond District two-unit building?
Whoever owns the roof. In a TIC or condo, that's usually the association or all owners together, so check your agreement before requesting quotes.
Who issues reroof permits in the Richmond?
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 a Richmond 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.