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Hamilton Exteriors — Northern California roofing, siding, and exterior remodeling
4.8-star rated by 39 verified Northern California homeowners

CSLB #1078806 · Architect & General Contractor · Building Northern California homes since 2018

Window Contractor in Redwood City

Serving Redwood City & San Mateo County
Licensed & Insured
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Hamilton Exteriors provides professional windows services in Redwood City, California. Licensed under CSLB #1078806, we handle all Redwood City building permits and inspections. Call (650) 977-3351 for an estimate.

Local Expertise

Windows in Redwood City: What Local Homeowners Need to Know

High heat makes low-E with SHGC under 0.25 a priority. 1950s aluminum single-pane most common replacement target. Caltrain noise corridor homes benefit from STC 30+ upgrades.

Redwood City's climate — warmest microclimate on the Peninsula — summer highs 85-95°F. South-facing Emerald Hills homes get intense UV. Limited fog penetration compared to coastal San Mateo County. — directly impacts windows performance and material selection. The most common issues we address in Redwood City include UV degradation and thermal cycling crack composition shingles 3-5 years faster than coastal cities. Original stucco on 1950s ranches develops extensive hairline cracking from expansion/contraction.. Hamilton Exteriors selects materials proven for Redwood City's Title 24 Climate Zone 3 conditions and backs every installation with our 50-year warranty.

Redwood City's housing stock spans 10% pre-1940, 30% 1940-1960, 30% 1960-1985. Architectural styles range from 1950s-60s ranches and tract homes in Woodside Plaza and Redwood Village to turn-of-century Victorians and Craftsmans downtown. Each era and style presents different windows requirements — from material compatibility to structural considerations. Our crews know what to expect before they arrive on site.

Factory-certified by our manufacturer partners

Owens Corning Preferred Contractor
CertainTeed ShingleMaster
GAF Master Elite Contractor
Tesla Powerwall Certified
James Hardie Elite Preferred
Rated 4.8 ★ from 39 Verified Northern California Homeowners

What Homeowners Say About Our Work

Real reviews from verified Northern California homeowners.

deborah maxey, Hamilton Exteriors customer

deborah maxey

in the last week

Great job and very professional the 1st photo is before and the other 2 is upon completion of work.

E

Eric W.

via Yelp

Hamilton Exteriors did an amazing job on my roof. The team was professional, and the quality of work was top-notch. Highly recommend!

R

Robert H.

via Angi

From the very first consultation, we knew we'd made the right choice. The team was knowledgeable and genuinely listened to our concerns about energy efficiency and design. We've already noticed a drop in our energy bills.

L

Laura G.

via Nextdoor

Hamilton Exteriors repaired extensive dry rot damage on our home's exterior. Their attention to detail and commitment to quality were evident throughout the project. Our home looks better than ever.

Northern California home with financing options available through Hamilton Exteriors
Financing Options

Financing Options Available For Everyone

Most Northern California exterior projects range from $15,000 for a standard roof replacement to $600,000 for a custom ADU — and paying out of pocket isn't the only option. Hamilton Exteriors partners with multiple lending providers to offer $0-down financing with approved credit, 12-month same-as-cash plans, and extended terms up to 15 years for larger projects. You only pay for completed, inspected work — we never ask for full payment before the job is done. Whether you're replacing a roof, upgrading siding, or building an ADU, your project manager will walk you through every payment option during your free estimate so you can choose what fits your budget.

Ask about same-as-cash plans during your estimate.

Premium Market

Windows Costs in Redwood City

$500–$1,000 per window

Median home value in Redwood City: $1,750,000

Prices reflect Redwood City's premium market and San Mateo County labor rates. Actual costs depend on home size, materials, and project complexity. We provide free, itemized estimates with no hidden fees.

Get Your Estimate

Rated 4.8 stars by Northern California homeowners across BBB, Trustpilot, Google, and Yelp

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Rated 4.8/5.0

What Window Styles Are Available?

Single Hung by Hamilton Exteriors in Northern California

Single Hung

A single-hung window features a fixed upper sash and a movable lower sash that slides vertically. It's space-efficient, easy to use, and offers great ventilation with a classic, versatile design.

Single Slider by Hamilton Exteriors in Northern California

Single Slider

A single slider window has one fixed pane and one sliding pane for easy horizontal operation. It's space-efficient, versatile, and offers excellent ventilation with a modern look.

Sliding Glass Doors by Hamilton Exteriors in Northern California

Sliding Glass Doors

A sliding glass door features large glass panels that glide smoothly on tracks, offering easy access, natural light, and a sleek, space-saving design.

Picture Windows by Hamilton Exteriors in Northern California

Picture Windows

A picture window is a large, fixed-pane window that provides expansive views and abundant natural light. Its clean, modern design enhances any space while improving energy efficiency.

Double Hung by Hamilton Exteriors in Northern California

Double Hung

A double-hung window has two movable sashes that slide vertically, offering versatile ventilation and easy cleaning. Its classic design fits a variety of architectural styles.

Casement Windows by Hamilton Exteriors in Northern California

Casement Windows

A casement window features a single sash that opens outward on side hinges, operated by a crank mechanism. It provides excellent ventilation, unobstructed views, and a tight seal for superior energy efficiency.

Neighborhoods We Serve

Windows Across Redwood City Neighborhoods

Redwood Shores

Redwood Shores homeowners frequently choose Hamilton Exteriors for windows. High heat makes low-E with SHGC under 0.25 a priority. With Redwood City's Peninsula warm pocket: summer highs 80-95°F, winter lows 38-48°F, material selection in Redwood Shores requires local expertise.

Emerald Hills

In Emerald Hills, homes are predominantly turn-of-century Victorians and Craftsmans downtown. 1950s aluminum single-pane most common replacement target. Our crews are familiar with Emerald Hills's architectural character and building requirements.

Farm Hill

From Farm Hill to Friendly Acres, Redwood City homeowners trust Hamilton Exteriors for windows that stands up to warmest microclimate on the Peninsula — summer highs 85-95°F. South-facing Emerald Hills homes get intense UV. Limited fog penetration compared to coastal San Mateo County.. We handle permits, engineering, and installation — you get a single point of contact.

Woodside Plaza

Woodside Plaza's ranch-style homes were built with standard windows that no longer meet Title 24 energy codes. We replace them with correctly sized, code-compliant windows that maintain the neighborhood's architectural character.

Friendly Acres

Friendly Acres homes benefit from window upgrades that reduce drafts and street noise. Our team matches window styles to your home's period architecture while providing modern performance.

Downtown Redwood City

Downtown Redwood City homes near the vibrant commercial district benefit from noise-reducing windows. We install dual-pane and triple-pane options that quiet exterior sound while maintaining ventilation and architectural character.

Our Advantage

Why Choose
Hamilton Exteriors?

Transparent Pricing

Every estimate is itemized line by line — materials, labor, permits, cleanup. You see exactly where your money goes before we start.

Factory Trained Installers

Every crew member is manufacturer-certified and vetted — licensed, bonded, insured, and background-checked before they touch your home.

50-Year Warranty

50-year manufacturer warranty backed by our own workmanship guarantee for the full duration. If anything fails, we fix it — free.

Your Own Project Manager

One dedicated point of contact from first call to final walkthrough. You’ll always know who to reach.

Our Latest Projects

Powered by BackOffice
Architectural Shingle Roof Replacement in Antioch Roofing

Architectural Shingle Roof Replacement

Location

Antioch

Products

GAF Architectural Shingles

Completed

Jun 25, 2026

Architectural Shingle Roof Replacement in Fremont Roofing 3

Architectural Shingle Roof Replacement

Location

Fremont

Products

GAF Architectural Shingles

Completed

Jun 10, 2026

Architectural Shingle Roof Replacement in Fremont — photo 2Architectural Shingle Roof Replacement in Fremont — photo 3
New Roof Installation in Hayward Roofing

New Roof Installation

Location

Hayward

Products

GAF Architectural Shingles

Completed

Jun 5, 2026

Full Roof Replacement in Walnut Creek Roofing

Full Roof Replacement

Location

Walnut Creek

Products

GAF Architectural Shingles

Completed

Jun 2, 2026

James Hardie Siding Installation in Pleasanton Siding

James Hardie Siding Installation

Location

Pleasanton

Products

James Hardie

Completed

May 28, 2026

GAF Roof Replacement in Oakland Roofing

GAF Roof Replacement

Location

Oakland

Products

GAF Architectural Shingles

Completed

May 15, 2026

Architectural Roof Replacement in Berkeley Roofing

Architectural Roof Replacement

Location

Berkeley

Products

GAF Architectural Shingles

Completed

Apr 10, 2026

Frequently Asked Questions

Didn't find the answer to your question? Call Now (650) 977-3351

What areas do you serve?

We serve Northern California across three regions: the San Francisco Bay Area (six counties from Alameda to Santa Clara), Greater Sacramento (Sacramento out to Roseville, Folsom, and Davis), and the Central Valley (Stockton to Modesto). Our crews are based in Castro Valley. We handle permits and know the building codes for each jurisdiction, which matters because requirements and fees vary significantly between cities.

How does billing and financing work?

We offer $0-down financing with approved credit, 12-month same-as-cash plans, and extended terms up to 15 years for larger projects. You only pay for completed, inspected work — we never ask for full payment before the job is done. Your project manager will walk you through every option during your estimate appointment. We also accept checks, ACH, and all major credit cards.

Are you licensed and insured?

Yes. CSLB License #1078806 — verify it anytime at cslb.ca.gov. We carry $2M general liability, full workers’ comp, and are bonded per California law. We hold GAF Master Elite, Owens Corning Preferred, CertainTeed ShingleMaster, and James Hardie Elite Preferred certifications — each requires annual training and quality audits to maintain. We’re happy to provide proof of insurance before any work begins.

Do I need a permit for my exterior project?

Most exterior projects in Northern California require a building permit. Fees vary by city — Oakland runs $200–$600, Peninsula cities often more. We handle the entire permit process: application, plan submission, and scheduling inspections. Permit fees appear as a separate line item in your estimate so you’ll see every cost upfront. For homes in WUI fire zones (Berkeley Hills, Oakland Hills, parts of Marin), we ensure full compliance with local fire-rated material requirements.

How much do replacement windows cost in Redwood City?

Replacement windows in Redwood City typically cost $400-$1,200 per window depending on size, style, and glass options. With San Mateo County energy rebates, many Redwood City homeowners save on the total cost. We provide free in-home quotes.

What window style is best for Redwood City homes?

The best window style depends on your home's architecture and ventilation needs. Double hung windows are our most popular in Redwood City for their classic look and easy cleaning. For homes in Woodside Plaza, casement windows offer superior airflow and modern aesthetics.

How long does window replacement take in Redwood City?

Most window replacement projects in Redwood City take 1-2 days for a full home. We install from the exterior whenever possible to minimize disruption to your daily life.

Are energy-efficient windows worth it in Redwood City?

Absolutely. Redwood City homeowners with dual-pane Low-E windows typically save 15-25% on energy bills. With median home prices at $1,750,000, new windows also boost resale value. Many San Mateo County utility rebates are available.

Does Hamilton Exteriors install bay windows in Redwood City?

Yes, we install bay, bow, picture, garden, and specialty windows throughout Redwood City and San Mateo County. Bay windows are especially popular in neighborhoods like Redwood Shores where they maximize natural light and views.

How much does window replacement cost in Redwood City?

Window replacement in Redwood City typically ranges from $800 to $1,500 per window depending on size, style, and glass type. A whole-home project for an average Redwood City home runs $12,000 to $30,000. We provide free consultations with exact pricing.

How much can new windows save on energy bills in Redwood City?

Modern dual-pane Low-E windows can reduce heating and cooling costs by 15-30% in Redwood City. With the Peninsula's mild climate, energy-efficient windows also improve comfort year-round by reducing drafts and hot spots.

What window styles suit Redwood City homes?

Redwood City has 1950s-60s ranches and tract homes mixed with turn-of-century Victorians. We install double-hung, casement, bay, picture, and sliding windows that match your home's architectural character while meeting current performance standards. Our architect-led approach ensures design continuity.

Do new windows need to meet Title 24 in Redwood City?

Yes, all window replacements in Redwood City must meet California Title 24 energy standards. This means minimum U-factor and SHGC ratings for Climate Zone 3. Hamilton Exteriors installs only compliant products and handles documentation.

Do I need permits for window replacement in Redwood City?

San Mateo County requires permits when changing window sizes or adding new openings. Like-for-like replacements may be exempt, but we confirm with the building department on every Redwood City project. Permit handling is included in our service.

Ready to start? (650) 977-3351

Call now — we pick up in minutes. Or fill out the form above and we'll call you.

21634 Redwood Rd Unit F, Castro Valley, CA 94546

Serving Oakland, Berkeley, Fremont, San Jose, Palo Alto, Walnut Creek, San Rafael, Napa, Redwood City & more across Alameda, Contra Costa, Marin, Napa, San Mateo & Santa Clara counties. All 47 cities →