Window, door & siding replacement in Sausalito, CA

Custom Exteriors replaces windows, entry doors, patio doors, and siding for Sausalito homeowners with products chosen for a waterfront climate: fog, wind, and salt air. We install Infinity from Marvin fiberglass windows, James Hardie fiber cement siding, and ProVia and Therma-Tru entry doors, using our own full-time AAMA Certified Master Installers, not subcontractors.

Why Sausalito homes are hard on windows and siding

Sausalito's setting at the mouth of the Golden Gate exposes homes to more moisture, wind, and salt than almost anywhere else in the Bay Area. Waterfront neighborhoods sit in summer marine fog well into the day, and areas like Hurricane Gulch take strong afternoon wind off the headlands. That combination wears out wood frames, rusts older metal windows, and pushes moisture into aging siding.

The housing stock adds its own challenges. Sausalito incorporated in 1893, and its hills still hold Victorian-era homes and early twentieth-century houses built when wealthy San Franciscans summered here. Later homes climb the hillsides in stacked rows, many reached by pedestrian stairs and narrow lanes, with windows oriented toward bay and city views.

With median sale prices above $1.5 million, view windows and weathered exteriors directly affect how a home looks, feels, and sells. Custom Exteriors has completed 30,000+ projects over 29 years with Infinity from Marvin, James Hardie, and ProVia and Therma-Tru products, exclusively. We do not install vinyl or builder-grade alternatives.

Climate considerations for Sausalito homeowners

Moisture, not heat, is the main climate problem for Sausalito exteriors. Fog and damp air keep wood frames and siding wet for long stretches, which leads to rot, peeling paint, swollen sashes, and drafts. Wind-driven rain finds any gap in old weatherstripping or failing seals.

The right materials solve most of this:

Fiberglass window frames do not rot, swell, or rust, and they hold their shape in damp conditions.
Fiber cement siding resists moisture and will not rot the way wood siding can.
Glass packages chosen for Title 24, California's state building energy code, keep fog-cooled rooms warmer and reduce condensation on the glass.

Fire resistance also matters here. Parts of Sausalito's wooded hillsides fall within designated Fire Hazard Severity Zones. You can check your address on the CAL FIRE Fire Hazard Severity Zone viewer.

Replacement windows and patio doors

Infinity from Marvin fiberglass windows are the window line we install for Sausalito homes because fiberglass holds up to constant moisture far better than wood or older metal frames. Fiberglass expands and contracts at nearly the same rate as glass, so the seal between frame and glass stays tight through daily temperature and humidity swings. See our fiberglass versus vinyl comparison for the specifics.

Sausalito projects usually center on views and weather protection:

View windows: Large picture windows and window walls that frame the bay, the city, and the Golden Gate.
Wind-exposed homes: Casement windows that seal tightly against the frame when closed.
Victorian and early 1900s homes: Double-hung windows with divided-lite patterns and trim profiles matched to the original construction.
Decks and terraces: Sliding, French, and bi-fold patio doors that open onto view decks.

We choose retrofit, block frame, or new construction installation based on your frames, your exterior, and any moisture damage we find in the openings. Our window installation methods guide explains each one. On stair-access hillside homes, we plan delivery and installation logistics during the consultation. As an Infinity from Marvin Platinum Partner, Marvin's highest certification tier for Infinity dealers, we carry full-size displays in our Pleasanton showroom.

CTA: See Infinity from Marvin windows

Entry door replacement

In Sausalito's damp climate, a new entry door solves problems as well as improving curb appeal. Original wood doors often swell, stick, and let in drafts after years of fog and wind-driven rain. ProVia and Therma-Tru entry doors in fiberglass and steel resist warping and weather far better.

Our design consultants help you choose a style, glass, and hardware that fit the house, whether that means a traditional paneled door for a Victorian or a clean modern door for a hillside contemporary.

CTA: See entry door options

James Hardie fiber cement siding

James Hardie fiber cement siding is the siding we recommend for Sausalito because it resists moisture and will not rot, even in near-constant fog. Wood siding on older Sausalito homes often shows soft spots, peeling paint, and water damage on the weather-facing sides, especially near the water.

James Hardie fiber cement is also noncombustible, a practical benefit for homes near wooded hillsides. ColorPlus Technology, James Hardie's factory-applied finish, is baked on under controlled conditions, so it holds color longer than siding painted on site. The siding is backed by a 30-year non-prorated product warranty and a 15-year ColorPlus finish warranty. We install James Hardie exclusively because after 29 years of evaluating siding, it is what we would put on our own homes.

Replacing siding is also the right time to replace windows with new construction installation, so openings can be fully flashed and sealed against wind-driven rain.

CTA: See James Hardie siding

Why Sausalito homeowners choose Custom Exteriors

Sausalito homeowners hire Custom Exteriors for accountability they can verify before they sign:

Full-time installers, not subcontractors. Our installation team are Custom Exteriors employees, many with more than a decade on our crew.
AAMA Certified Master Installers (American Architectural Manufacturers Association), trained to the installation standards manufacturers require to honor their warranties.
Moisture-focused installation. We inspect openings for rot and water damage before installing, and we flash and seal to keep weather out.
Older-home experience. We are EPA Lead-Safe Renovation, Repair, and Painting (RRP) Certified, which matters for the many Sausalito homes built before 1978.
Third-party recognition and warranty coverage. Diamond Certified and BBB Accredited. See our awards, reviews, and product and labor warranty.

Frequently asked questions

Q: Do I need a permit to replace windows in Sausalito?A: Typically, yes. Window replacement is not on the City of Sausalito's list of work that is exempt from a building permit. Custom Exteriors handles the permit application and inspections with the City as part of your project.

Q: My home is historic. Can I still replace the windows?A: Usually, yes, but historic properties in Sausalito receive additional design review, especially when a project changes original window or door openings on visible facades. Replacement windows that match the original appearance, color, and profile are the goal. We match divided-lite patterns and trim details and can work within the City's review process. Contact the City of Sausalito Community Development Department early so review does not delay your project.

Q: What windows hold up best to fog and salt air?A: Fiberglass frames are one of the most durable choices for a damp, coastal climate because they do not rot, swell, or rust. Infinity from Marvin fiberglass windows paired with a Title 24 glass package also reduce condensation and keep fog-cooled rooms warmer.

Q: How much does window replacement cost in Sausalito, CA?A: Cost depends on the number and size of your windows, the products you choose, the installation method, and site access. Large view windows and stair-access homes typically cost more than standard installations. Review our window pricing factors and window cost guide before your consultation. We provide free, itemized estimates so you know what you are paying for before you decide.

Q: My Sausalito home was built before 1978. Does that change the project?A: It can. Homes built before 1978 may contain lead-based paint, and federal law requires lead-safe work practices on renovations that disturb painted surfaces in those homes. Custom Exteriors is EPA Lead-Safe Renovation, Repair, and Painting (RRP) Certified, and we confirm whether lead-safe procedures apply before installation begins.

Q: Do I have to visit the Pleasanton showroom to get an estimate?A: No. We offer free, no-pressure in-home consultations in Sausalito. The showroom is there if you want to see and handle full-size window, door, and siding displays first.

Ready to upgrade your Sausalito home's windows, siding, or doors?

Schedule a free, no-pressure consultation and we will walk through your home, your options, and an itemized estimate, with no obligation. Prefer to see the products first? Our Pleasanton showroom has full-size displays of every window, door, and siding product we install.

Schedule a no-pressure consultation | Visit our Pleasanton showroom (2142 Rheem Drive, Suite E, Pleasanton, CA 94588) Phone: (925) 249-2280 local, (888) 957-7800 toll free

Convenient financing options

We offer 18 months zero payments and zero interest, or 4.99% financing on approved credit. Financing is a tool to make a project more accessible, not the reason to choose us. Bring it up during your consultation if you'd like to discuss options.

Explore Financing Options

Nearby areas we also serve

Custom Exteriors also serves San Francisco, Richmond, Oakland, and Berkeley, along with Pleasanton, Dublin, Livermore, San Ramon, Danville, and the greater East Bay. See the full service area list for every city we cover.