Sausalito Siding & Windows Replacement

Sausalito homes take a beating that most inland houses never see: salt-laden air off Richardson Bay, near-constant marine moisture, and walls perched on some of the steepest lots in Marin. Bay Area Siding Company is a Larkspur-based siding and window contractor, so Sausalito is essentially in our backyard — and we take on the full re-side: stripping the old cladding, checking what the weather has done to the sheathing and framing behind it, rebuilding the weather barrier and flashing, and installing new siding to spec.

Want to get the project moving? Request an estimate or call (415) 619-5167 and we'll talk through your walls.

When re-siding beats one more repair

Coastal exposure ages siding faster than a homeowner expects, and on a hillside lot the damage often starts on the weather side where nobody walks. A few things usually tip a Sausalito house from "patch it" to "replace it":

• Boards that cup, split, or feel spongy — especially on bay-facing and windward elevations
• A paint job that blistered or peeled within a season or two of going on
• Rust bleed, corroded fasteners, or staining that keeps coming back after cleaning
• Musty odors, interior staining, or soft spots around windows and at the base of walls
• Original T1-11, hardboard, or thin aluminum that has simply run out its life

One or two of these on a single wall may be a repair. When they show up across several elevations, tearing off and starting from a sound wall is the more honest fix.

Why we take it off rather than side over the top

Covering tired siding with a new layer buries the exact information a coastal home needs you to see. With the old material off, we can read the sheathing for hidden rot, find where salt air and fog have worked in around openings, and verify there's an actual weather-resistive barrier doing its job — because on older Sausalito houses there often isn't a modern one. Siding over also piles weight onto the wall and can seal moisture inside, which is the last thing you want this close to the water. A tear-off asks for more up front and hands back a wall that's dry from the sheathing out.

Picking the right material for a coastal hillside

We install several systems and would rather walk your elevations with you than push one product. Where to start:

• James Hardie fiber cement — noncombustible and dimensionally stable in fog and sun; see the Sausalito James Hardie page for the fire-zone and salt-air detail
• Fiber cement generally — the wider category if you're comparing manufacturers
• LP SmartSide — engineered wood, when a warmer wood look is the goal
• Vinyl siding — a lower-maintenance option where the home and setting suit it

We also work with CertainTeed, wood, and aluminum. On Sausalito's hillside lots that sit in mapped fire areas, material choice isn't only aesthetic — more on that below.

What to expect: our process

1. Consultation — we look at the existing walls, talk through goals, budget, and how the house sits on its lot.
2. Measure and spec — field measurements and a written scope, elevation by elevation.
3. Permit and design review — Sausalito requires a permit for exterior siding work, and exterior changes commonly route through the City's design review, so we plan that in.
4. Tear-off and substrate inspection — the old cladding comes off and we assess sheathing and framing before anything new goes back on.
5. Weather barrier and flashing — a water-resistive barrier and correctly sequenced flashing at every opening and transition, detailed for a wet, salty environment.
6. Install to spec — new siding fastened and gapped per the manufacturer's instructions.
7. Finish and walkthrough — trim, caulk, cleanup, and a final review with you.

Sausalito-specific things to know

Permits and design review. The City of Sausalito requires a building permit for exterior siding work, and its planning rules treat exterior changes — the kind visible from the street or the water — as something that usually needs review whether you're replacing like-for-like or changing the look. Design review procedures live in the municipal code, and whether your re-side is handled administratively or goes to the board depends on scope and visibility. We confirm the path with the Community Development Department early so it doesn't stall the job.

You're in a fire district, not a city fire department. Fire protection here comes from the Southern Marin Fire Protection District, which adopted Wildland-Urban Interface code covering parts of Sausalito along with Mill Valley, Tiburon, and Shelter Bay. Where a parcel falls inside a mapped WUI or Fire Hazard Severity Zone, California Building Code Chapter 7A can shape exterior wall materials toward noncombustible or ignition-resistant assemblies. Whether that applies to your address depends on the parcel's designation and your scope of work — you can check parcel status through the district and MarinMap, and we confirm it before speccing. Sausalito already pushes exterior fire-hardening in other ways too, including a Class A fire-rated roofing requirement, so the direction of travel is clear even where 7A siding rules don't strictly attach.

Steep lots, tight access. Much of Sausalito climbs the hill above downtown on narrow, winding streets, and plenty of homes are reached by stair or shared drive. That changes a siding job before the first board comes off: staging, material handling, and scaffolding all take more planning, and using the public right-of-way for staging can require an encroachment permit. Bigger hillside projects can also trip grading thresholds. None of it is unusual here — it just needs to be built into the schedule.

Salt air and the rainy-season clock. Marine exposure is the defining reality of a Sausalito re-side; it drives corrosion-resistant fastener choices, generous clearances, and careful drainage detailing. It also matters when we tear off — the City's erosion-control rules run through the wet season (mid-October into spring), so opening up walls in winter means having drainage and protection in place.

The houseboat exception. The floating-home community at Waldo Point Harbor is a genuine Sausalito icon, but a floating home is a different animal from a hillside house — it sits on the water, and re-cladding one runs through harbor and agency rules that don't apply to a land parcel. If that's your situation, tell us up front so we can point you in the right direction.

Doing the exterior envelope all at once? We also handle window replacement in Sausalito, and you can see finished work in our project gallery. For the wider region, see our Marin service area.

What affects the cost

There's no honest online price for a re-side, because the drivers are all site-specific: the size and number of elevations, the material and finish you choose, how much concealed rot or substrate repair turns up at tear-off, corrosion-driven detailing for the marine setting, hillside access and staging, whether the work triggers design review or fire-zone assembly requirements, and how much window and trim integration is part of the scope. We price it after we've walked the house.

Frequently asked questions

Do I need a permit to replace siding in Sausalito? Yes. The City requires a building permit for exterior siding work, and exterior changes commonly go through design review as well. We handle the permitting and confirm the review path with Community Development.

My house is on the hill in a fire area — does that limit my siding choices? It can. Where a parcel sits in a mapped WUI or Fire Hazard Severity Zone under the Southern Marin Fire Protection District, Chapter 7A can steer you toward noncombustible or ignition-resistant materials. We confirm your parcel's designation before recommending a material.

Should I re-side over the old material to save money? On a coastal home we almost always advise against it. Siding over hides rot and moisture damage, adds weight, and can trap water — exactly the failure mode salt air and fog create. Tear-off lets us fix the wall, not just its face.

How long does a Sausalito siding project take? It depends on the home's size, the material, what we find at tear-off, hillside access, and permitting. We give you a realistic timeline once we've measured and mapped out staging.

Get started

Let's get your Sausalito re-side scoped and specced right for the hill and the salt air. Request an estimate or call Bay Area Siding Company at (415) 619-5167.