20 Best Window Companies in San Anselmo, CA (2025 Reviews)

If you’re thinking of upgrading to new windows, our list of the best window installation companies can help.

We analyzed all the top-rated window companies in San Anselmo and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated January 24, 2025

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

A review of the best window replacement companies in San Anselmo may not seem like the most captivating article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. Damaged or outdated windows can cost you in electric bills. As a matter of fact, the Department of Energy estimates that about 30% of your home’s heat or cool air could be lost through your windows.

Replacement windows improve the insulation in your home, not only making you more comfortable during the summer and winter, but also saving you some money and helping the environment.

We’ve compiled a list of the top installation companies to help you in your research, so you can not only enjoy brand-new windows, but also save money on your energy bills.

Advertisement

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in San Anselmo

The EcoWatch team evaluated several window providers across San Anselmo to narrow our list down to the best ones. The providers in this article scored best in our categories: energy-efficient offerings, availability, customer service, price and more.

Window World logo
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in San Anselmo. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of industry experience, and it currently serves 200 locations nationwide.

It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World appeals to eco-conscious consumers by providing energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in San Anselmo?

Prices aren’t available on Window World’s website, but it's known for offering some of the most affordable window installations around. For more accurate information on the cost, you can ask for a quote from the company.

Milgard Windows & Doors logo
Excellent Reputation

Milgard Windows & Doors

★★★★★
BBB Rating: A
Locations: West Coast
Founded: 1962
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Wide network of installers
  • Pros icon Lifetime warranty available
Cons:
  • Pros icon Entails hiring third-party contractors
  • Pros icon Limited additional services

Milgard Windows & Doors provides the best local installation in San Anselmo. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has about 60 years of industry experience, and it currently serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties.

It has established itself as a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.

Energy Efficiency of Milgard Windows & Doors Windows

Milgard Windows & Doors appeals to eco-conscious consumers by providing energy-efficient window offerings. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.

How much does Milgard Windows & Doors cost in San Anselmo?

Prices aren’t available on Milgard’s website, but it offers different kinds of windows at varying price points. For more accurate information on the cost, you can ask for a quote from the company.

Renewal by Andersen logo
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen provides the best availability in San Anselmo. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of industry experience, and it currently serves nearly every state except Mississippi and West Virginia.

It has established itself as a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen appeals to eco-conscious consumers by providing energy-efficient window offerings. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in San Anselmo?

Prices aren’t available on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more accurate information on the cost, you can ask for a quote from the company.

We aim to be unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.

More Window Companies in San Anselmo

Renewal by Andersen of San Francisco

Hayward, CA
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Skylights

Website: https://www.renewalbyandersen.com/window-company/890-san-francisco-ca/retailer
Address: 30806 Santana St, Hayward, CA 94544
Phone: (510) 803-3110

Golden Heights Remodeling INC

Concord, CA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation

Website: https://www.goldenheightsremodeling.com/
Address: 1110 Burnett Ave # J, Concord, CA 94520
Phone: (800) 521-0950

Santa Rosa Window Tint

Santa Rosa, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.santarosawindowtint.com/
Address: 3721 Santa Rosa Ave b4, Santa Rosa, CA 95407
Phone: (707) 879-8468

Mr Window Replacement

Fremont, CA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Vinyl Frames

Website: http://www.mrwindowreplacement.com/
Address: 4053 Nicolet Ave, Fremont, CA 94536
Phone: (707) 294-8507

Cal Coast Window & Door

Pleasanton, CA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Bay Windows

Website: https://calcoastwindows.com/
Address: 5673 W Las Positas Blvd Suite 203, Pleasanton, CA 94588
Phone: (925) 398-8184

Quality Windows & Doors

Pleasanton, CA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://www.qwdwindowsanddoors.com/
Address: 3732 Stanley Blvd Ste B, Pleasanton, CA 94566
Phone: (925) 484-1747

GENERAL B CONTRACTOR

San Jose, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.generalbcontractor.com/
Address: 262 Hillsdale Ave, San Jose, CA 95136
Phone: (408) 999-1111

Window Factory

Greenbrae, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Bay Windows
  • Service icon Metal Frames
  • Service icon Fiberglass Frames

Website: http://www.bayareawindowfactory.com/
Address: 2100 Redwood Hwy, Greenbrae, CA 94904
Phone: (415) 924-3300

Alexander Company

Burlingame, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Skylights
  • Service icon Window Replacement/Installation
  • Service icon Window Repair
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: https://alexanderco.com/
Address: 1322 Marsten Rd, Burlingame, CA 94010
Phone: (650) 288-0813

The Glass Guru

Fairfield, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Glass
  • Service icon Energy-Efficient Options
  • Service icon Triple Pane Glass
  • Service icon Mirrors
  • Service icon Glass Doors
  • Service icon Vinyl Frames
  • Service icon Metal Frames
  • Service icon Storm/Impact Windows
  • Service icon Window Replacement/Installation
  • Service icon Fiberglass Frames
  • Service icon Screen Repair
  • Service icon Wood Frames
  • Service icon Window Repair
  • Service icon Tempered Glass
  • Service icon Skylights
  • Service icon Glass Repair
  • Service icon Glass Showers

Website: https://www.theglassguru.com/fairfield-vacaville-ca/
Address: 1601 Enterprise Dr STE 14, Fairfield, CA 94533
Phone: (707) 348-9539

Northwest Exteriors

Santa Rosa, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames

Website: http://www.northwestexteriors.com/
Address: 3450 Airway Dr STE G, Santa Rosa, CA 95403
Phone: (707) 527-7770

Bay Builders and Remodeling Inc.

San Jose, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows

Website: http://baybuilders.com/
Address: 800 Charcot Ave #100, San Jose, CA 95131
Phone: (408) 583-6797

Sivan Windows and Doors - San Jose Window and Door Replacement Company

San Jose, CA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: https://sivanwindowsanddoors.com/contact-san-jose/
Address: 1650 Las Plumas Ave A, San Jose, CA 95133
Phone: (888) 582-7956

American Window Specialist

Campbell, CA
4.9
★★★★★
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Vinyl Frames
  • Service icon Window Repair
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung

Website: https://americanwindowspecialists.com/
Address: 1550 Dell Ave i, Campbell, CA 95008
Phone: (408) 484-7676

B & L Glass

Santa Rosa, CA
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Timely Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Mirrors
  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Glass Repair
  • Service icon Custom Glass
  • Service icon Skylights
  • Service icon Glass Doors

Website: https://blglass.com/
Address: 3175 Cleveland Ave, Santa Rosa, CA 95403
Phone: (707) 546-4143

R & M Quality Windows & Doors

Newark, CA
4.8
★★★★★
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Window Replacement/Installation

Website: https://www.randmqualitywindowsanddoors.com/
Address: 5588 Central Ave #A, Newark, CA 94560
Phone: (510) 796-0100

Custom Exteriors, Inc

Pleasanton, CA
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Custom Window Designs

Website: https://www.custom-exteriors.com/
Address: 2142 Rheem Dr ste e, Pleasanton, CA 94588
Phone: (888) 957-7800

American Window Systems, Inc.

Napa, CA
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Skylights
  • Service icon Window Replacement/Installation

Website: https://www.amwinsys.com/
Address: 1729 Action Ave suite b, Napa, CA 94559
Phone: (707) 244-7260

East County Glass & Window, Inc.

Pittsburg, CA
4.7
★★★★★
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Mirrors
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers

Website: http://www.ecglass.com/
Address: 441 E 10th St, Pittsburg, CA 94565
Phone: (925) 432-1433

American Vision Windows

Santa Clara, CA
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Vinyl Frames
  • Service icon Wood Frames
  • Service icon Window Replacement/Installation
  • Service icon Fiberglass Frames
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors

Website: https://www.americanvisionwindows.com/locations/san-jose/
Address: 400 Mathew St, Santa Clara, CA 95050
Phone: (408) 444-8941
San Anselmo Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in San Anselmo, CA using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in San Anselmo Saves You Money

When you upgrade to energy-efficient windows, you may see several perks, including:

  • Decrease your carbon footprint: In San Anselmo, you can lower your indirect greenhouse gas emissions by about 117 pounds per year once you switch to energy-efficient windows.
  • Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, particularly if you have an older home.
  • Save on electricity bills: Because energy-efficient windows lower the amount of energy used to heat or cool your home, they can help you save about $451 annually on your energy bills in San Anselmo.

Estimated Cost of Window Replacement in San Anselmo

When researching window installation, each company provides different services and prices. Let’s go over some typical costs and services.

How Much Do New Windows Cost?

Though the typical cost of replacing one window is around $600, it can range from $200 to $1,200. But costs vary remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door installations, which will make your project cost more.

It’s also worth bearing in mind that energy-efficient windows will usually cost more upfront, but Energy Star predicts that upgrading the windows on your San Anselmo home can mean an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 per year for double-pane windows. How much you’ll save by switching to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.

Asking for free quotes from multiple providers is the best way to figure out which one is right for you.

What Services do Window Installers Offer?

The first question to ask yourself when getting new windows is: Do you need a full-frame installation or a pocket installation?

A full-frame installation is a total window replacement. It involves taking out the old window, the windowsill, and the exterior and interior trim. It also involves additional materials, like insulation and drip edges, which increase the overall cost of the project. It’s also worth noting that you may have to touch up the paint surrounding the window after a full-frame installation. A pocket installation involves replacing a window without replacing the frame. So, instead of tearing out the whole window and reinstalling it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.

If you’re hiring a reputable window installation company, your company can recommend the best type for your project. In San Anselmo, the decision will mostly depend on how much damage there is currently and the age and condition of your existing frames.

Advertisement

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

How We Choose the Best Window Installers in San Anselmo

EcoWatch reviews are different from most reviews since we examine these companies through a sustainability lens. Along with energy efficiency, we analyzed each installer and ranked them using the following methodology:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve San Anselmo so you can find the best window installation company near you.

Work Quality

When choosing new windows, the quality and breadth of services often plays just as important of a role in insulation and performance as the type of window you opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

We analyzed trends in recent customer feedback to determine the companies with the most consistent customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across nearly every category, including quality of parts, quality of installation, warranty, professionalism, cost and more.

Cost

This one is a give-and-take: similar to other services, cheap window companies may not provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that provide a spectrum of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed, windows are a considerable investment, so you’ll want to be certain that investment is well protected. Window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Due to San Anselmo’s climate, homeowners need to be wary of low efficiency, rot and water damage. We factored in local experience to reflect the ability of San Anselmo window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.

San Anselmo, CA Window Replacement FAQs

How much does a window install cost?

The national average cost to install a single window is around $600 but can range between $200 and $1,200, depending on several factors. The price is generally influenced by the location of your property, the type and material of the window and the size of the window. Also, bear in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.

What are the most common types of replacement windows?

The most common kinds of windows for homes are slider windows, bay windows, picture windows, casement windows, transom windows, double-hung and single-hung windows and awning windows.

What do window installation companies do?

Window installation professionals go to your house to remove your old windows and replace them with new ones. Some companies install products made by other companies, whereas others install their own windows. The installer will also clean up after the installation.

How do you know it’s time to replace your windows?

Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, they should probably be replaced. Apart from that, if your windows have any damage on them, or they have become difficult to open or close, they may be in need of replacement.