Marin City Siding & Windows Replacement

Bay Area Siding Company re-sides homes across Marin City — the redwood houses tucked into the hillside with their bay views and the multifamily buildings down in the flats. We're a Marin-based contractor (our shop is in Larkspur, just up the corridor), so this is home turf. A full replacement with us means the whole assembly: tear-off, a look at the sheathing underneath, weather barrier, flashing, and cladding set to the manufacturer's spec.

Ready to move forward? Request an estimate or call (415) 619-5167 to talk through your project.

When re-siding beats one more repair

Marin City sits right on Richardson Bay, and that marine air — damp, salty, fog-driven — is hard on exterior walls over the years. Much of the housing here was rebuilt between roughly 1960 and 2000, so a lot of walls are now at the age where the cladding, not just the paint, is the problem. A few things that usually tip a home from "patch it again" to "replace it":

• Boards that cup, split, or feel spongy when you press on them
• A fresh paint job that's already peeling or blistering a season or two later
• Caulk lines and trim joints that keep opening back up no matter how often they're sealed
• Musty smells or dark staining on interior walls that share the weather side
• Older T1-11, hardboard, or aluminum that has simply run out its service life

One or two of these can sometimes be repaired. When several show up together, you're usually paying repeatedly to postpone the inevitable.

Why we tear off instead of siding over the top

It's tempting to nail new cladding straight over the old — it looks cheaper on paper. The problem is that it seals in whatever's happening behind the existing wall, and in a salt-and-fog environment like this, what's happening behind the wall is exactly what you need to see. Pulling the old material lets us check the sheathing, catch rot before it spreads, and confirm there's a real water-resistive barrier and proper flashing (older walls here often never had modern flashing at all). Layering over also adds weight and can trap moisture against the frame. Tear-off costs more today and leaves you with a wall that's sound from the sheathing out.

Choosing a material

We install several systems and will walk the trade-offs with you at the house. A starting point:

• James Hardie fiber cement — noncombustible fiber cement that shrugs off salt air; see the Marin City James Hardie page for the fire-exposure and coastal detail
• Fiber cement — the broader category, other manufacturers included
• LP SmartSide — engineered wood, a warmer look with less upkeep than solid wood
• Vinyl siding — a lower-maintenance option where it suits the building

We also work in CertainTeed, wood, and aluminum, and we handle multifamily exteriors — relevant given how much of Marin City's housing is apartments and townhome-style buildings in the flats. For hillside homes closer to the open space, material choice isn't only about looks; more on that below.

What to expect

1. Consultation — we walk your walls with you and talk goals, budget, and any problem spots you've noticed.
2. Measure and spec — exact measurements and a written scope of work.
3. Permit — Marin City is unincorporated, so siding permits go through the Marin County Community Development Agency, Building & Safety Division, not a city hall.
4. Tear-off and substrate inspection — the old cladding comes off and we inspect sheathing and framing before anything new goes up.
5. Weather barrier and flashing — water-resistive barrier and flashing detailed to keep the wall dry through the wet season.
6. Install to spec — new cladding installed per the manufacturer's instructions.
7. Finish and walkthrough — trim, finish, cleanup, and a final review together.

Marin City-specific things to know

Your permit office is the county, not a city. Marin City is an unincorporated community, which means there's no local municipal building department — a common surprise for people used to a city hall. Building permits for exterior wall work run through the Marin County Community Development Agency, Building & Safety Division (the county's Larkspur-area offices, reachable at 415-473-6550). We handle that submittal as part of the job.

Salt air and fog drive the spec. Being this close to Richardson Bay means chronic moisture and salt exposure. That pushes us toward corrosion-resistant fasteners, careful clearances and drainage detailing, and cladding that holds a finish in a damp marine setting rather than materials that need constant repainting.

The hillside behind town carries some fire exposure. Marin City's uphill neighborhoods back onto open space, and the ridgelines above southern Marin fall within Cal Fire's Fire Hazard Severity Zone mapping (the state's Local Responsibility Area maps were updated in 2025). Whether a fire-zone designation touches your particular parcel — and whether it affects your cladding options under the state's exterior-wall provisions — depends on your address and the scope of work. If your home is on the slope, tell us early so we can confirm the specifics with Marin County before we spec the material.

A genuine mix of housing. The single-family redwood homes climbing the hillside and the multifamily buildings on the flats are two different re-siding problems — different access, different assemblies, sometimes different ownership structures. We scope each accordingly.

Doing windows at the same time? See Marin City window replacement. You can also browse our project gallery and our wider Marin service area.

What affects the cost

We don't post prices because no two of these jobs are alike. The real drivers are the size and number of stories; hillside access and staging on the slope; how much substrate repair turns up once the old cladding is off; the material and finish you choose; corrosion-resistant detailing for the marine setting; and whether a fire-zone designation changes the assembly. A walkthrough is the only honest way to price it.

Frequently asked questions

Do I need a permit to replace siding in Marin City? Yes, and because Marin City is unincorporated, the permit comes from the Marin County Community Development Agency's Building & Safety Division rather than a city office. We manage the permitting.

Does the salt air near Richardson Bay really change what I should install? It does. Marine moisture and salt are tough on finishes and fasteners, so we lean toward corrosion-resistant hardware, careful drainage detailing, and cladding that keeps its finish in damp coastal conditions.

My house is up on the hill near the open space — does that affect my siding? It can. Parts of the slopes above southern Marin fall within fire-hazard mapping, and where a designation applies, the state's exterior-wall provisions can favor noncombustible or ignition-resistant materials. Whether that applies to your parcel depends on the address and scope, which we confirm with Marin County before speccing.

Should I re-side over the old material to save money? We generally don't recommend it here. Covering over hides the sheathing, framing, and flashing — exactly what needs inspecting in a salt-and-fog climate — and can trap moisture. Tear-off costs more up front but gives you a wall that's genuinely sound.

Get started

Call (415) 619-5167 or request an estimate. We'll look at your walls, talk through materials for the marine setting, and lay out the permitting and process.