Commercial & Residential Roofing in San Francisco, CA
Apartment buildings, flats and mixed-use roofs across the city.
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Call (415) 410-7917- CSLB #1148511 C-39 licensed, opens the official CSLB license lookup in a new tab
- GAF + CertainTeed Certified · Veteran-owned: GAF Certified and CertainTeed ShingleMaster credentialed; see our manufacturer credentials
- 5.0 out of 5 4 Google reviews, opens Google in a new tab
- 5.0 out of 5 16 Yelp reviews, opens Yelp in a new tab
- 25-yr warranty On new roofs (plus up to 50-year GAF manufacturer coverage)
- Photo records Every job
How we handle commercial & residential roofing in San Francisco
From a single-storey San Francisco bungalow to a flat-roof office or a multi-unit building, the work plan scales but the install discipline doesn't. Residential work is pitched shingle, tile, and steep-slope detailing; commercial and multifamily lean toward low-slope membranes, drainage, and minimizing tenant disruption. Either way the job is planned around the people using the building — landscaping, tenants, parking — and documented with photos.
On San Francisco's wind-exposed commercial buildings, membrane attachment and edge-metal detailing are what keep a low-slope roof down — we spec the attachment to the building's exposure, not a generic default.
- Single-family, multi-unit, and small-commercial
- Pitched shingle/tile and low-slope membrane systems
- Tenant- and schedule-aware on occupied buildings
- Documented, warrantied work at every scale
Commercial & Residential Roofing across San Francisco neighborhoods
Sunset & Parkside
Row houses from the 1930s and 40s with a flat or low-slope roof behind the facade. Fog most of the year and ocean wind wear out membranes, flashing and gutters faster than in the rest of the city.
Richmond
Edwardian flats and row houses with flat roofs, parapets and lightwells. Close to the beach, salt air corrodes fasteners and metal flashing, so we spec corrosion-resistant metals.
Marina & Cow Hollow
Homes and flats from the 1920s and 30s, many with clay tile trim over flat roofs, and wind off the Bay. Tile edges and the flat roof behind them are usually separate repairs.
San Francisco homes we see on these jobs
- Victorian and Edwardian buildings whose visible "roof" is a facade; behind it is a flat or low-slope roof draining to scuppers or internal drains.
- Condo and TIC buildings, where the roof is usually shared property: the HOA or all the co-owners approve the work, and we write one estimate everyone can review.
Local conditions that shape the work
Ponding water
Flat roofs with sagging framing or blocked scuppers hold water, and standing water is what kills a membrane early.
Wind-driven rain
Winter storms push rain sideways into parapet caps, wall joints and window heads, which is where many "roof" leaks really start.
Flat and low-slope roofs on Victorians, Edwardians and row houses
Most San Francisco houses have a flat or low-slope roof you cannot see from the street. These roofs fail at the edges and penetrations more often than in the middle, so that is where we start.
- Systems we install: modified bitumen (torch-down or cold-applied), TPO and other single-ply membranes, chosen for the building and how the roof is used.
- Parapet caps, wall flashing and the joint with the neighbor's building, the source of a large share of SF leaks.
- Drainage: scuppers, internal drains and downspouts sized and cleared so water leaves the roof instead of ponding.
- Skylights, lightwells, roof hatches and deck supports flashed into the new membrane, not caulked around it.
Permits for commercial & residential roofing in San Francisco
San Francisco requires a permit before roofing material is installed, repaired or removed, with limited exemptions listed in Building Code Section 106A.2. Reroofing is permitted through the Department of Building Inspection, and only a C-39 licensed roofing contractor can apply online. We pull the DBI permit and request the inspections. Other city rules that often come up on SF roof jobs:
Permit office: San Francisco Department of Building Inspection (DBI) (opens in a new tab). How we handle permits across the Bay Area: roofing permits explained.
Commercial & Residential Roofing in San Francisco: FAQs
Do you work on Victorian and Edwardian flat roofs?
Yes, that is most of our work in the city. We usually install modified bitumen or a single-ply membrane such as TPO, with new parapet flashing and drainage. The right system depends on the building, any roof deck or solar, and how the roof drains, and we recommend one in writing after the inspection.
Can you replace the roof on a condo or TIC building?
Yes. On condo and TIC buildings the roof is usually shared property, so the HOA or all the co-owners approve the work. We inspect, write one itemized estimate everyone can review, and plan access, street space and the schedule around the residents.
Do you handle commercial roofs in San Francisco?
Yes — small-commercial and multifamily San Francisco buildings are a regular part of our work, typically low-slope TPO, EPDM, or modified-bitumen systems with proper drainage. We scope around your tenants and operating hours.
Can you re-roof an occupied apartment building in San Francisco?
We can. The key on an occupied San Francisco building is sequencing and communication — staging the work so tenants keep access and parking, and keeping the building watertight every night.
Do you work with HOAs and property managers?
Yes. We provide the written scope, photos, and schedule that HOAs and property managers need to approve and coordinate the work.
Other roofing services in San Francisco
See our overview of roofing in San Francisco, or learn more about commercial & residential roofing across the Bay Area.