Window, door & siding replacement in Belvedere, CA

Custom Exteriors replaces windows, entry doors, patio doors, and siding for Belvedere homeowners, with products built for waterfront exposure and a process built around the City's design review. 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 Belvedere projects need a different approach

In Belvedere, nearly every exterior change goes through the City's design review, so a window or siding project needs planning before it needs products. The City of Belvedere states that most exterior changes require Planning design review, even when a building permit is not required. A contractor who understands that process saves you time and surprises.

Belvedere is one of the oldest and smallest cities in California. It incorporated in 1896 and sits almost entirely on Belvedere Island and Corinthian Island, connected to the Tiburon Peninsula by two causeways, with Belvedere Lagoon between them. About 2,100 residents live in roughly 1,060 homes on just half a square mile of land, and nearly every home faces the water.

With median sale prices above $5 million, Belvedere homeowners expect windows and siding that respect the architecture and hold up to bay weather for decades. 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.

Waterfront considerations for Belvedere homeowners

Belvedere homes are surrounded by water on almost every side, so wind, salt air, and moisture are the main threats to windows and siding. Afternoon wind off Raccoon Strait and Richardson Bay drives rain into worn seals and weatherstripping. Damp, salty air corrodes older metal windows and keeps wood frames and siding wet.

The right materials handle each of these:

• Fiberglass window frames do not rot, rust, or swell, and they keep a tight seal in wind.
• Fiber cement siding resists moisture and will not rot, and its factory finish holds up to sun reflecting off the water.
• Title 24 glass packages, the glass options that meet California's state building energy code, cut heat gain on sunny, water-facing walls and heat loss on cool, windy evenings.

Replacement windows and patio doors

Infinity from Marvin fiberglass windows are the window line we install in Belvedere because fiberglass holds its shape and seal in constant wind and salt air. Fiberglass expands and contracts at nearly the same rate as glass, so the seal between frame and glass stays tighter over time than vinyl typically does. See our fiberglass versus vinyl comparison for the specifics.

Belvedere projects are almost always about the view:

• Picture windows and window walls sized to keep sightlines to San Francisco, Angel Island, and the bay as open as possible.
• Casement windows that seal tightly against the frame, a good fit for wind-exposed hillsides on Belvedere Island.
• Double-hung windows with traditional profiles and divided lites for Belvedere's older homes.
• Sliding, French, and bi-fold patio doors that open onto decks and docks, including homes along Belvedere Lagoon.

We choose retrofit, block frame, or new construction installation based on your existing frames and any water damage we find in the openings. Our window installation methods guide explains each one. As an Infinity from Marvin Platinum Partner, Marvin's highest certification tier for Infinity dealers, we carry full-size displays in our Pleasanton showroom, which is a useful place to settle on styles and finishes before design review.

Entry door replacement

A new entry door is one of the most visible changes you can make to a Belvedere home, which is why it usually goes through design review. Original wood doors exposed to bay wind and moisture tend to swell, stick, and lose their finish. ProVia and Therma-Tru entry doors in fiberglass and steel resist warping and weathering far better.

Fiberglass doors are available with realistic wood-grain finishes, so you can keep a traditional look without the upkeep. Our design consultants help you choose a style, glass, and hardware that suit the house and support your design review application.

James Hardie fiber cement siding

James Hardie fiber cement siding is the siding we recommend for Belvedere because it stands up to salt air, wind-driven rain, and sun without rotting or needing constant repainting. Wood siding on water-facing walls often shows rot, peeling paint, and salt staining long before the rest of the house.

James Hardie fiber cement resists moisture and pests, and it is noncombustible. HardieShingle and HardiePlank lap siding come in profiles that suit both traditional and contemporary homes. 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.

If you are replacing siding, it is also the right time to replace windows with new construction installation, so each opening can be fully flashed and sealed.

Why Belvedere homeowners choose Custom Exteriors

Belvedere 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.
• Design review and permit support. We provide the product specifications and details you need for the City's design review, then handle the building permit and inspections.
• Older-home experience. We are EPA Lead-Safe Renovation, Repair, and Painting (RRP) Certified for 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 design review to replace windows in Belvedere?A: Usually, yes. The City of Belvedere requires Planning design review for most exterior changes, even when a building permit is not required. Minor changes to windows and doors can often be approved at the staff level rather than by the Planning Commission. Contact the City's Planning and Building Department early, and we will provide the product details your application needs.

Q: Do I need a building permit to replace windows in Belvedere?A: In most cases, yes. The City requires building permits for alterations and repairs, with narrow exceptions such as small siding repairs of 100 square feet or less. Custom Exteriors handles the building permit and inspections as part of your project.

Q: I live on Belvedere Lagoon. Are there extra approvals?A: Possibly. Lagoon homes are part of the Belvedere Lagoon Property Owners Association, which may have its own review requirements in addition to the City's. Check with the association before you finalize your plans.

Q: What windows hold up best to salt air and wind?A: Fiberglass frames are one of the most durable choices for a waterfront home because they do not rot, rust, or swell. Infinity from Marvin fiberglass windows also keep a tight seal in wind and pair with Title 24 glass packages that cut heat gain and heat loss.

Q: How much does window replacement cost in Belvedere, CA?A: Cost depends on the number and size of your windows, the products and glass package you choose, the installation method, and site access. Large view windows and hillside 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: Do I have to visit the Pleasanton showroom to get an estimate?A: No. We offer free, no-pressure in-home consultations in Belvedere. The showroom is there if you want to see and handle full-size window, door, and siding displays first.

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

Schedule a free, no-pressure consultation and we will walk through your home, your options, the design review process, 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 would like to discuss options.

Explore Financing Options

Nearby areas we also serve

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