20 Best Window Companies in Walnut Creek, CA (2023 Reviews)
When it's time to upgrade your windows, our list of the top window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in Walnut Creek and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
Although clean energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your house's efficiency can also have a large impact on home energy conservation. During the hot summer months, the last thing you want is your cool air to leak out of your outdated windows.
Luckily, helping you save money with upgraded windows also aligns with our goals of reducing energy usage for the environment.
As windows have such a great impact on your home, picking the best company for you is a big choice to make. That's why the EcoWatch team has put together this list of the best window installation companies, so you can make an informed decision more easily.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Walnut Creek
The EcoWatch team researched many window companies in Walnut Creek to find the best ones for our readers. The providers reviewed in this article scored best in our categories, which include energy-efficient offerings, customer service, availability, price and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World has windows expertise in Walnut Creek. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window replacement sector.
It 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 WindowsThere are a wide range of window types available from Window World, some of which are Energy Star products. 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 Walnut Creek?While pricing information is not available on Window World’s website, it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can get a quote on the company’s website.

Milgard Windows & Doors
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EnergyStar Partner
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Wide network of installers
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Lifetime warranty available
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Entails hiring third-party contractors
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Limited additional services
Milgard Windows & Doors offers the best local installation in Walnut Creek. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has about 60 years of experience in the window replacement sector. Its reputation is backed by all the positive reviews from customers online.
It 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 WindowsMilgard Windows & Doors offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. 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 Walnut Creek?Milgard doesn’t have any pricing information available on its website, but it offers different kinds of windows at varying price points. For more detailed information on pricing, you can inquire about a quote from the company.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen offers the best availability in Walnut Creek. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window replacement sector. Its reputation is backed by all the positive reviews from customers online.
It 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 WindowsRenewal by Andersen offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. 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 Walnut Creek?Andersen doesn’t have any pricing information available on its 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 detailed information on pricing, you can inquire about a quote from the company.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct has the best warranty in Walnut Creek. This window installation company has been in business since 2002 and currently provides services to 27 states nationwide. Its reputation is backed by hundreds of positive reviews on customer review websites.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Walnut Creek?Universal doesn’t have any prices available on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to get more accurate pricing information is to get a free quote from the company.
We've recommended installers with shining reputations, but note that some national companies have independently owned locations in Walnut Creek, so your service may differ depending on your local crew. We have tried to remain unbiased and transparent by including pros and cons for every company we reviewed.
More Window Companies in Walnut Creek
Renewal by Andersen of San Francisco
Hayward, CA-
Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Glass Showers
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Stained Glass
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Commercial Windows
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Residential Windows
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Sliding Glass
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Bay Windows
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Double-Hung
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Custom Window Designs
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Window Replacement
Window World of Greater Sacramento
Sacramento, CA-
Free assessment
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Timely Service
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Sliding Glass
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Custom Window Designs
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Double-Hung
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Glass Showers
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Window Replacement
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Residential Windows
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Fast Delivery
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Bay Windows
Dan's Glass Inc
Concord, CA-
Timely Service
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Window Repair
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Commercial Windows
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Double-Hung
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Sliding Glass
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Residential Windows
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Window Replacement
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Glass Showers
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Fast Delivery
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Custom Window Designs
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Bay Windows
Windows & Beyond
Concord, CA-
Free assessment
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Good Customer Service
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Educational Website
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Timely Service
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Price Transparency
Services Offered
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Glass Showers
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Commercial Windows
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Bay Windows
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Custom Window Designs
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Energy-Efficient Options
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Residential Windows
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Window Replacement
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Double-Hung
CWD Remodels & Windows
Concord, CA-
Educational Website
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Free assessment
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Price Transparency
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Timely Service
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Good Customer Service
Services Offered
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Fast Delivery
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Bay Windows
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Residential Windows
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Commercial Windows
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Glass Showers
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Custom Window Designs
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Window Replacement
Bestoff Windows & Construction
Concord, CA-
Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Sliding Glass
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Fast Delivery
Pella Windows & Doors of Northern California
Alamo, CA-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Bay Windows
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Window Replacement
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Double-Hung
Concord Glass, Inc.
Concord, CA-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Window Repair
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Sliding Glass
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Tempered Glass
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Glass Showers
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Window Replacement
Cosmic Renovation & Roofing
Concord, CA-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Fast Delivery
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Stained Glass
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Custom Window Designs
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Double-Hung
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Residential Windows
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Window Replacement
Rojas Construction and Remodeling, Inc.
Walnut Creek, CA-
Free assessment
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Timely Service
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Window Replacement
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Custom Window Designs
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Full-Service Installations
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Glass Showers
Sunlight Window and Door Systems, Inc.
Oakland, CA-
Timely Service
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Aluminum Window Frames
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Glass Showers
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Commercial Windows
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Custom Window Designs
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Energy-Efficient Options
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Fast Delivery
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Window Replacement
Vinyl Casement Windows
Oakland, CA-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Residential Windows
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Double-Hung
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Window Replacement
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Bay Windows
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Custom Window Designs
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Sliding Glass
Wilson Construction
El Sobrante, CA-
Timely Service
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Double-Hung
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Window Replacement
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Custom Window Designs
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Residential Windows
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Fast Delivery
Best Exteriors
Oakland, CA-
Educational Website
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Good Customer Service
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Free assessment
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Timely Service
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Price Transparency
Services Offered
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Bay Windows
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Custom Window Designs
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Double-Hung
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Fast Delivery
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Window Replacement
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Sliding Glass
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Residential Windows
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Glass Showers
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Stained Glass
J & D Glass & Sash Inc
Berkeley, CA-
Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Window Replacement
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Commercial Windows
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Bay Windows
A-Taylor Made Window
Richmond, CA-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
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Timely Service
Services Offered
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Window Replacement
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Bay Windows
The Glass Guru
Antioch, CA-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
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Timely Service
Services Offered
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Tempered Glass
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Double-Hung
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Glass Showers
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Residential Windows
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Window Replacement
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Window Repair
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Commercial Windows
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Aluminum Window Frames
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Full-Service Installations
The Window Specialists, Inc.
Oakland, CA-
Free assessment
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Timely Service
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Educational Website
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Good Customer Service
Services Offered
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Energy-Efficient Options
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Commercial Windows
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Bay Windows
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Custom Window Designs
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Fast Delivery
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Window Replacement
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Residential Windows
East Bay Glass
Oakland, CA-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Energy-Efficient Options
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Stained Glass
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Bay Windows
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Double-Hung
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Window Replacement
Home Services at The Home Depot
San Leandro, CA-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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Double-Hung
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Fast Delivery
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Custom Window Designs
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Window Replacement
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Commercial Windows
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Glass Showers
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Stained Glass
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Residential Windows
Calculate how much you can expect to pay for window installation and replacement in Walnut Creek, CA using our customized window cost calculator.
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 Walnut Creek Saves You Money
Energy-efficient windows can benefit you in more than one way. Here are some reasons you may want to make the switch:
- Better temperature control in your home: Energy-efficient windows can cut back on how hard your heating system needs to work to heat your home.
- 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: When your home is on the older side, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its real estate value.
- Save money on energy bills: The Department of Energy estimates that heat gained or lost via windows accounts for about 25-30% of energy use in your home. Switching to energy-efficient windows can help lower that amount, which helps you save some money on your bills.
Estimated Cost of Window Replacement in Walnut Creek
When researching window installation, each company offers varying services and prices. Let's go over some typical costs and services.
How Much Do New Windows Cost?
The national average cost to install one window is about $600 but can range from $200 to $1,200. But prices differ considerably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door installations, which carry a higher price tag.
With windows, efficiency is the most important factor for many homeowners. Efficient windows may cost more upfront, but by increasing the efficiency of your home — especially if you live in a hot climate — they can give you decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Walnut Creek homeowners $579+ a year after replacing single-pane windows.
Costs will also vary based on the material you choose for your window frames. Aluminum frames cost the least. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are a bit more expensive and offer good insulation. Composite frames made with wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
The first thing to ask yourself when getting new windows is: Do you need a full-frame installation or a pocket installation?
Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are most common when you want a different style for your windows or when it has a great amount of rot or deterioration. Full-frame installations are more comprehensive and will increase overall costs. Pocket installations (or retrofits) entail replacing a window within its existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.
Your window installation company should be able to help you choose what's best for your needs. In Walnut Creek, the decision will mostly be based on how old your home is and if there's any moisture damage. Wood can decay if it's not properly maintained over the years, so it's good to have a professional check on your frames and window sills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Walnut Creek
EcoWatch reviews differ from most reviews since we look at these companies through a sustainability lens. We have assessed the best window replacement companies in Walnut Creek mostly based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows have been shown to cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find a quality window installation company near you.
Work Quality
When picking new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the brand you choose. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another very important review factor. If most customers don't have nice feedback about their service from a certain installer, it won't be featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
Protecting your investment in new windows is important to many homeowners. That's why window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Walnut Creek's climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Walnut Creek window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Walnut Creek, CA Window Replacement FAQs
How much does a window install cost?
The national average cost of installing one window is about $600 but can range from $200 to $1,200, based on several factors. The price is often dependent on the type and material of the window, the size of the window and the location of your property. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What are the most common types of replacement windows?
There are several different types of windows you can get for your house, including awning windows, double-hung and single-hung windows, casement windows, slider windows, transom windows, picture windows and bay windows.
When should I use a window installation company?
You should hire a window installation professional whenever you need to upgrade your windows. Installing windows is a complex process that can be difficult to do on your own, so it's best handled by the professionals.
Should I replace my windows all at once?
If you want to get more efficient windows and save money on your energy bills, replacing all of the windows together is the only way to see a noticeable difference. However, if you have just one or two windows that are damaged or drafty, you can replace just those.