Belmont Siding & Windows Replacement

Belmont runs from wooded, split-level hillside lots above Water Dog Lake down to the flatter blocks east of Highway 101, and the siding job looks different depending on where your house sits. Bay Area Siding Company is a Larkspur-based siding and window contractor working across the Peninsula, and we take a re-side from start to finish: pulling the old cladding, checking what's behind it, rebuilding the weather barrier and flashing, and installing the new material to spec.

Ready to move forward? Request an estimate or call (415) 619-5167 and we'll walk through your project.

When a re-side beats another repair

A lot of Belmont's housing is mid-century ranch, period bungalow, and custom hillside builds, and the walls behind that cladding were often assembled before drainage-plane detailing was routine. Once the exterior starts showing these, patching tends to chase the problem rather than fix it:

• Boards that cup, split, or give a little when you lean on them
• A repaint that blisters or peels within a season or two
• Punky, spongy material at wall bases, or trim that a screwdriver sinks into
• Interior stains, a musty smell, or bubbling paint on the inside of an exterior wall
• Tired T1-11, hardboard, or old aluminum that has simply aged out

Why we usually tear off rather than side over the top

Adding a fresh layer on top of failing cladding buries the details that actually decide whether a wall stays dry. On an older Belmont home — especially a hillside house that has taken years of wind-driven winter rain — the only way to read the sheathing, catch concealed rot around openings, and verify there's a real water-resistive barrier is to take the old siding off. Layering also piles weight onto the wall and can seal moisture in. Tear-off costs more at the outset and leaves you with an assembly that's sound from the sheathing outward.

Picking a material for your home

We install several systems and would rather talk through the trade-offs at your house than sell you a default. A starting point:

• James Hardie fiber cement — noncombustible fiber cement; there's a dedicated Belmont James Hardie page that goes deeper
• Fiber cement — the wider category, other manufacturers included
• LP SmartSide — engineered wood
• Vinyl siding — a lower-upkeep pick where it suits the home

We also work in CertainTeed, wood, and aluminum. If your lot is up in the wooded western hills, material choice isn't only a style question — more on that below.

What to expect

1. Consultation — we look at the existing walls and talk through goals, look, and budget.
2. Measure and spec — exact measurements and a written scope for the work.
3. Permit — Belmont's Building Department (Permit Center) reviews exterior alteration work; we pull the permit and handle the paperwork.
4. Tear-off and substrate inspection — the old cladding comes off and we check sheathing and framing before anything new goes up.
5. Weather-resistive barrier and flashing — WRB plus flashing at windows, doors, and transitions to keep water moving off the wall.
6. Install to spec — new siding set to the manufacturer's fastening and clearance instructions.
7. Finish and walkthrough — trim, caulk, cleanup, and a final look together.

Belmont-specific: the western hills change the material conversation

If your home is on the uphill, wooded side of town, read this part before you settle on a material. Belmont is covered by San Mateo Consolidated Fire, and Cal Fire's 2025 Local Responsibility Area maps identify fire hazard severity zones across Belmont's steep, tree-lined western slopes — the terrain around the Water Dog Lake open space and the neighborhoods climbing above it. Coverage was redrawn in 2025, so boundaries shifted; the reliable move is to confirm your specific parcel's designation with the City of Belmont or the fire department rather than guess from the street.

Why it matters for siding: where a fire-hazard designation applies, California Building Code Chapter 7A governs exterior wall coverings and generally points toward noncombustible or ignition-resistant materials (or tested assemblies). Fiber cement is noncombustible, which is why it comes up so often for these lots; standard untreated cedar or redwood usually doesn't meet that bar. Whether and exactly how Chapter 7A applies depends on your parcel, the product, and the scope of work — that's a question we confirm with the City up front, not something we assume. Belmont even expanded its fire-safety chipping program in 2025 to cover residents west of Alameda de las Pulgas, a rough marker for where the hillside exposure begins. Homes down in flatter East Belmont carry far less of this concern; there the conversation is mostly about the wall's condition and the look you want.

Working with us

We're based in Larkspur and cover the Peninsula. You can browse finished work in our project gallery and see the wider Peninsula service area. Doing the glass at the same time makes for cleaner flashing sequencing — see Belmont window replacement.

What affects the cost

There are no online prices because no two Belmont walls are the same. The real drivers are tear-off complexity and any hidden substrate repair we find once the cladding is off; number of stories and how tough the hillside access and staging are; whether windows and trim are being integrated at the same time; the material and finish you choose; and any fire-zone assembly detailing on an uphill parcel. We price it after we've measured and seen the walls.

FAQ

Do I need a permit to replace siding in Belmont? Plan on it. The City of Belmont's Building Department reviews exterior alteration work such as siding and stucco, and it works from the current California Building Standards Code. We pull the permit and manage the process.

My house is up in the Belmont Hills — does that limit my siding options? It can. Parcels in a mapped fire hazard severity zone fall under Chapter 7A, which favors noncombustible or ignition-resistant wall coverings. We confirm your parcel's status with the City before speccing a material.

Is it better to re-side or just cover the old material? On older Belmont homes we lean toward full tear-off, because that's the only way to inspect and correct the sheathing, weather barrier, and flashing. Covering over hides exactly the things that fail later.

How long will a re-side take? It depends on the home's size, the material, what we uncover at tear-off, hillside access, and permitting. We give you a realistic timeline once we've measured.

Get your Belmont siding project moving

Call (415) 619-5167 or request an estimate. We'll read your walls, talk materials, and lay out the whole process.