South San Francisco Siding & Windows Replacement

Bay Area Siding Company replaces siding on homes across South San Francisco — the postwar tracts west of El Camino, the older cottages in Old Town, and the houses climbing the slopes below San Bruno Mountain. We are a Marin-based (Larkspur) siding and window contractor, and a re-side with us covers the full job: removing the old cladding, inspecting what's behind it, renewing the weather barrier and flashing, and installing your new siding to the manufacturer's spec.

Ready to get started? Request an estimate or call (415) 619-5167 to walk through your project.

When a re-side beats another repair

The Industrial City sits in a windy, marine-influenced pocket of the Peninsula, and that combination — driven rain off the bay, steady afternoon wind, and salt in the air — is hard on an exterior wall over the decades. A patch here and a repaint there can carry a wall for a while, but at some point the cladding itself is the problem. Look for:

• Boards or panels that cup, split, or feel spongy when you lean on them
• A fresh paint job that's already peeling, blistering, or chalking a season or two later
• Caulk lines that keep opening up and trim you can dent with a thumbnail
• Damp, musty interior walls, or staining that shows up after a wind-driven storm
• Original T1-11, hardboard, or thin aluminum that has simply aged out

One or two of these might be a repair. Several together usually mean the wall has stopped keeping water out, and re-cladding is the more economical path over the life of the house.

Why tear off instead of siding over the top

Nailing new siding over the old layer buries the exact things a South City wall needs checked: the sheathing and whether there's a functioning water-resistive barrier under it all. Many homes here were framed in the subdivision boom after 1945, before drainage-plane detailing was routine — so tearing off is how we actually find soft spots around windows, confirm the barrier, and add flashing that may never have existed. Covering over also stacks weight on the wall and can seal moisture inside. It costs more to strip a wall down, and it's the only way to hand back one that's sound from the sheathing out.

Picking a material

We install a range of siding systems and will talk through the trade-offs at your home. A starting point:

• James Hardie fiber cement — noncombustible, dimensionally stable, and well suited to wind and marine damp (the South San Francisco James Hardie page goes deeper)
• Fiber cement — the broader category across manufacturers
• LP SmartSide — engineered wood with a lighter, warmer feel
• Vinyl siding — a lower-maintenance option where the look and exposure fit

We also work with CertainTeed, wood, and aluminum. On South City's more exposed, wind-driven walls, fastening and finish durability matter as much as the profile you pick.

What to expect

1. Consultation — we look at your existing walls, talk through what's failing and what you want.
2. Measure and spec — exact measurements and a written scope for the project.
3. Permit — South San Francisco processes siding work through its Building Division; we handle the application.
4. Tear-off and substrate inspection — old siding comes off and we check the sheathing and framing before anything new goes back up.
5. Weather barrier and flashing — a water-resistive barrier and correct flashing at every opening and transition, sized for wind-driven rain.
6. Install to spec — new siding fastened and detailed per the manufacturer's published instructions.
7. Finish and walkthrough — trim, finish, cleanup, and a final review together.

South San Francisco specifics

Permits and who issues them. Siding work in South San Francisco runs through the City's Building Division (part of Economic and Community Development), and re-siding is on the list of projects the City processes as over-the-counter permits alongside windows and re-roofing. We pull the permit and coordinate inspection so the paperwork isn't your problem.

Wind and salt-air exposure. Summer is the windiest season here, and the city's marine setting means walls take a lot of moving air and airborne salt. That's an argument for durable cladding, sealed fastening, and flashing detailed for pressure-driven water — not just a good-looking board. Homes in the more open flats and on the western slopes tend to feel this most.

Fire-hazard designations near the open space. CAL FIRE issued updated Fire Hazard Severity Zone maps for South San Francisco in 2025, and the City is folding them into its land-use and building-code process. Parcels near San Bruno Mountain and the Sign Hill open space are the ones most likely to carry a designation that brings California Building Code Chapter 7A into play, which favors noncombustible or ignition-resistant wall assemblies. Whether it applies to your home depends entirely on the parcel, so we confirm your address with the City before speccing rather than assuming either way.

Housing stock. South City is mostly single-family: postwar subdivisions like Buri Buri, Winston Manor, and Westborough west of El Camino, older homes in Old Town, and hillside pockets such as Sterling Terrace and Serra Highlands. Different eras mean different original cladding and different things to find at tear-off, which is why we assess each home rather than assume.

Working with us

We're based in Larkspur and work the length of the Peninsula. Browse finished work in our project gallery, and see the wider Peninsula service area. Replacing windows in the same push? See South San Francisco window replacement, and for the fiber-cement path specifically, South San Francisco James Hardie siding.

What affects the cost

No two re-sides price the same. The real drivers are the home's size and number of stories, the material and finish you choose, how much substrate repair turns up once the old cladding is off, access on tight or sloped lots, whether a fire-zone assembly applies to your parcel, and how much window and trim integration the job includes. We price it after we've measured and seen the walls.

Frequently asked questions

Do I need a permit to replace siding in South San Francisco? Yes. The City processes siding work through its Building Division, and re-siding is among the projects handled as over-the-counter permits. We take care of the application and inspection.

Does South City's wind and salt air really change my siding choice? It can. A windy, marine-exposed wall rewards durable, dimensionally stable cladding and careful fastening and flashing far more than a sheltered inland wall does. We factor exposure into the material and detailing recommendation.

Is my home in a fire-hazard zone? Maybe, if you're near San Bruno Mountain or the Sign Hill open space. CAL FIRE updated the city's Fire Hazard Severity Zone maps in 2025; whether Chapter 7A affects your wall depends on your specific parcel, which we confirm with the City before we spec materials.

How long does a re-side take? It depends on square footage, the material, what we find at tear-off, and permitting. We give you a realistic timeline once we've measured the home.

Get your South San Francisco siding project moving

Call (415) 619-5167 or request an estimate. We'll look at your walls, talk materials suited to South City's wind and marine exposure, and lay out the process.