🏆 Serving Bay Area Homeowners Since 1987 Licensed & Insured · CSLB #599566 Call Today: (707) 746-6571
Windows & Doors — Est. 1987
⭐ Rated 4.8/5 by Bay Area Homeowners

Bay Area’s Most Trusted Replacement Window Experts

37+ years of expert window installations for Bay Area homes. Premium brands. Professional crews. Energy savings you’ll feel on your first utility bill.

37+ Years in Business
Certified Dealer
Licensed & Insured
Free In-Home Estimate
No pressure. No obligation. Just honest advice.

    🔒 Your information is secure. We never sell your data.
    Authorized Dealer for America’s Top Window Brands

    The Right Windows. Installed Right. Guaranteed.

    Energy Savings

    Modern dual-pane and triple-pane windows can reduce your energy costs by up to 30%. Every window we install meets or exceeds California Title 24 requirements.

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    Noise Reduction

    Live on a busy street? Our sound-blocking windows dramatically reduce outside noise — perfect for homes near highways, airports, or active neighborhoods.

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    Home Value

    New windows are one of the highest-ROI home improvements. Recoup 60–70% of your investment at resale while enjoying the benefits every day.

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    Professional Install

    Our experienced crews have installed windows in thousands of Bay Area homes. Every installation includes proper flashing, sealing, and a final quality walkthrough.

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    Warranty Protection

    Full manufacturer warranties on every product, plus our own workmanship guarantee. We stand behind our installations for the long haul.

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    Honest Advice

    No high-pressure sales tactics. Our consultants will assess your home, explain your options clearly, and help you find windows that fit your needs and budget.

    37+
    Years in Business
    10K+
    Homes Served
    4.8
    Average Rating
    3
    Premium Brands
    ★★★★★
    “Super satisfied with Insight Glass. The estimator, Dave R., was highly knowledgeable and even suggested a couple of simple design changes that both increased the aesthetic look and saved money. The estimate included a full breakdown of each windows style/model/size/room unlike some estimates that just gave a lump sum. The delivery time was a few days less than the promised three weeks, and the delivery men showed up on time and even delivered the windows to the specific room. I only renovate one or two homes a year but Insight Glass are my new Go To window people.”
    John H
    San Jose, CA
    ★★★★★
    “Insight Glass is a Great company with Excellent Service & Fast Delivery, I used their service for my house to change all windows and patio doors, they offered best deal and professional service. I am really happy about it!”
    Sk K.
    Livermore, CA
    ★★★★★
    “I had two window panels that had broken seals. I called insight glass as they were the original installers. Without hesitation, they ordered me new panels.. Within a couple of weeks, the replacements were in and they had a team come out and replace the panels. The panels were under warranty but I did have to pay for labor. Everything went great.”
    Sheryl M.
    Napa, CA

    From Estimate to Installation in 4 Simple Steps

    1

    Free Consultation

    We visit your home, assess your windows, discuss your goals, and measure every opening — all at no cost.

    2

    Custom Proposal

    You receive a detailed written estimate with product options, clear pricing, and no hidden fees.

    3

    Expert Installation

    Our professional crews handle everything — removal, installation, flashing, sealing, and cleanup.

    4

    Final Walkthrough

    We inspect every window with you, confirm operation, and make sure you’re 100% satisfied before we leave.

    Ready to Transform Your Home?

    Schedule your free in-home estimate today. No pressure, no obligation.

    Get My Free Estimate
    Or call us directly: (707) 746-6571

    What Homeowners Ask Us

    How much do replacement windows cost?

    The cost depends on window size, style, frame material, and glass options. Most Bay Area homeowners invest between $500 and $1,500 per window installed. We provide free, transparent estimates with no hidden costs — so you’ll know exactly what to expect before any work begins.

    How long does a window replacement take?

    Most whole-home window replacements are completed in 1–3 days depending on the number of windows. Each individual window typically takes 30–60 minutes to install. We work efficiently to minimize disruption to your daily routine.

    What brands do you carry?

    We’re authorized dealers for Andersen, Milgard, and AMSCO — three of the most trusted names in the window industry. Each brand offers different features and price points, so we can match the right product to your home and budget.

    Do you offer financing?

    Yes, we offer flexible financing options to make your window project affordable. Ask your consultant about current financing plans during your free in-home estimate.

    Which cities do you serve?

    We serve homeowners across the Bay Area including San Mateo, Redwood City, Palo Alto, Mountain View, Sunnyvale, Santa Clara, Cupertino, Los Gatos, Walnut Creek, Pleasant Hill, Lafayette, Danville, San Ramon, Dublin, Pleasanton, Fremont, and surrounding communities.

    Are your installers licensed and insured?

    Absolutely. All installation work is performed by experienced professionals and covered by our comprehensive insurance and workmanship guarantee. We’ve been a licensed California contractor since 1987.