20 Best Window Companies in Kensington, CA (2023 Reviews)
When it's time to upgrade your windows, our guide to the best window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in Kensington 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
A review of the best window installation companies in Kensington may not seem like the most interesting article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might realize. During the hot summer months, the last thing you want is your cool air to leak out of your outdated windows.
That's also bad news for the environment because the additional energy used by outdated windows increases your carbon footprint.
We've made a guide on the top installation companies to help you in your search, so you can not only enjoy brand new windows, but also save money on your electricity bills.
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 Kensington
The EcoWatch Reviews team evaluated several window providers in Kensington to find the best ones for our readers. The installers in this article scored best in our review categories, such as energy-efficient offerings, customer service, local expertise, 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows business, and it has proved to be one of the best companies in the business.
Window World may be the company for you if you're looking for one 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 WindowsWindow World is an Energy Star partner and has a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Kensington?Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. Getting a free quote on its website is the best way to know for sure.

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 is a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has 60 years of experience in the window installation industry, and it has proved to be one of the most respected companies in Kensington. Its reputation is backed by many 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 carries 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 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 Kensington?Though pricing information is not readily available on Milgard’s website, it offers different kinds of windows at varying price points. If you’d like to know for sure, you can request a quote on the company’s website.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the window installation industry, and it has proved to be one of the most respected companies in Kensington. Its reputation is backed by many 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 carries 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. 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 Kensington?Though pricing information is not readily available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like to know for sure, you can request a quote on the company’s website.

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 offers the best warranty in Kensington. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of industry experience, and it currently serves 27 states nationwide. Its reputation is backed by a considerable amount of positive reviews from customers online.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Kensington?Although pricing information is not available on Universal’s website, 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. For more detailed information on the cost, you can ask for a quote from the company.
Please note that the companies in this section are national, which means the quality of customer service may vary depending on your local crew. We have tried to remain unbiased and transparent by describing pros and cons for every company.
More Window Companies in Kensington
Renewal by Andersen of San Francisco
Hayward, 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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Sliding Glass
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Commercial Windows
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Window Replacement
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Double-Hung
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Glass Showers
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Residential Windows
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Custom Window Designs
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Bay Windows
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Stained Glass
A-Taylor Made Window
Richmond, CA-
Timely Service
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Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Custom Window Designs
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Bay Windows
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Residential Windows
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Window Replacement
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Commercial Windows
Vinyl Casement Windows
Oakland, CA-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Window Replacement
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Bay Windows
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Residential Windows
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Sliding Glass
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Double-Hung
J & D Glass & Sash Inc
Berkeley, CA-
Educational Website
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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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Glass Showers
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Window Replacement
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Residential Windows
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Bay Windows
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Custom Window Designs
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Commercial Windows
Wilson Construction
El Sobrante, CA-
Price Transparency
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Free assessment
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Good Customer Service
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Timely Service
Services Offered
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Double-Hung
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Custom Window Designs
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Window Replacement
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Fast Delivery
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Residential Windows
Best Exteriors
Oakland, CA-
Educational Website
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Good Customer Service
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Timely Service
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Free assessment
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Price Transparency
Services Offered
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Residential Windows
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Double-Hung
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Sliding Glass
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Custom Window Designs
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Glass Showers
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Window Replacement
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Stained Glass
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Fast Delivery
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Bay Windows
Sunlight Window and Door Systems, Inc.
Oakland, CA-
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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Window Replacement
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Fast Delivery
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Glass Showers
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Energy-Efficient Options
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Commercial Windows
Home Services at The Home Depot
El Cerrito, CA-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Stained Glass
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Sliding Glass
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Residential Windows
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Window Replacement
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Custom Window Designs
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Fast Delivery
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Glass Showers
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Commercial Windows
The Window Specialists, Inc.
Oakland, CA-
Timely Service
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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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Energy-Efficient Options
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Window Replacement
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Fast Delivery
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Bay Windows
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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Glass Showers
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Custom Window Designs
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Full-Service Installations
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Window Replacement
Ace Glass Company
San Francisco, CA-
Free assessment
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Good Customer 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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Double-Hung
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Residential Windows
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Window Replacement
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Sliding Glass
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Window Repair
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Tempered Glass
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Custom Window Designs
East Bay Glass
Oakland, CA-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Window Replacement
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Commercial 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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Energy-Efficient Options
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Residential Windows
Charles Window & Door Company
San Rafael, CA-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Window Replacement
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Fast Delivery
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Bay Windows
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Residential Windows
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Glass Showers
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Aluminum Window Frames
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Full-Service Installations
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Sliding Glass
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Double-Hung
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Custom Window Designs
Window Factory
Greenbrae, CA-
Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Window Replacement
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Residential Windows
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Fast Delivery
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Custom Window Designs
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Bay Windows
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Aluminum Window Frames
Pella Windows & Doors of Northern California
San Francisco, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Double-Hung
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Sliding Glass
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Custom Window Designs
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Bay Windows
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Residential Windows
Cosmic Renovation & Roofing
Concord, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Double-Hung
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Fast Delivery
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Residential Windows
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Stained Glass
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Custom Window Designs
Dan's Glass Inc
Concord, CA-
Timely Service
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Window Replacement
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Double-Hung
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Bay Windows
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Window Repair
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Sliding Glass
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Glass Showers
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Fast Delivery
Windows & Beyond
Concord, CA-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
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Timely Service
Services Offered
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Double-Hung
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Residential Windows
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Glass Showers
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Bay Windows
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Custom Window Designs
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Energy-Efficient Options
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Window Replacement
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Commercial Windows
Raven Restoration
San Francisco, CA-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Window Replacement
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Fast Delivery
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Residential Windows
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Window Repair
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Double-Hung
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Bay Windows
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Custom Window Designs
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Stained Glass
OCEAN SASH AND DOOR INC.
San Francisco, 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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Residential Windows
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Bay Windows
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Aluminum Window Frames
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Double-Hung
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Custom Window Designs
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Window Replacement
Calculate how much you can expect to pay for window installation and replacement in Kensington, 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 Kensington Saves You Money
By upgrading to energy-efficient windows, you can enjoy several benefits, such as:
- Decrease your carbon footprint: In Kensington, you can cut your indirect greenhouse gas emissions by about 117 pounds per year after you install energy-efficient windows.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
- Better temperature control in your home: Living in a chilly city like Kensington often means depending on your heater to keep your house cool. Energy-efficient windows can reduce how hard your heating system needs to work to heat your home.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, especially if your home is on the older side.
Estimated Cost of Window Replacement in Kensington
Windows come in various purposes, styles and shapes, so costs and services will vary greatly based on your project. Below, we detail the average cost and services that you can get from window replacement companies.
How Much Do New Windows Cost?
Generally, Kensington homeowners can expect their window installations to range from $250 to $1,200. The average cost is at around $600. Costs will differ considerably based on your location, the number of windows you need, the current condition of your home and the quality of your products. Many window companies also offer replacement door installations and other add-ons like coating, shutters, baths and more. Additional services will increase overall project costs.
Whether or not you want to install energy-efficient windows is another factor that will influence the cost. These will usually cost more than other windows, but on the other hand, you can save about $579 a year on your energy bills in Kensington.
How much your window installation costs will also vary based on the kind of material you choose for the frames. Wood windows are typically the most expensive, although it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
There are generally two kinds of window replacement services: full-frame and pocket installations.
A full-frame installation is a total window replacement. This service involves taking out the old window, the sill, and the exterior and interior trim. It can also involve other materials, like insulation and drip edges, which raise the overall cost of the project. Also worth noting: you may have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations take less time and therefore cost less. However, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
Your window installation company will be able to recommend the best type for your project. In Kensington, the choice will mostly be influenced by how much damage there is currently and how old your existing frames are.
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 Kensington
In our hunt to make your home improvements easier and more eco-friendly in Kensington, EcoWatch chose the above companies as the best window installation companies in the city. We have evaluated the best window installers in Kensington mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows can lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installation companies that serve a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each installer featured in our guide to make sure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent online reviews to find the companies with the highest rates of customer satisfaction. Customer satisfaction might be the most important factor, as it indicates the quality of services across most other categories, including cost, quality of installation, professionalism, warranty, quality of parts and more.
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 gave higher scores 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 give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Kensington, CA Window Replacement FAQs
How much does a window install cost?
The national average cost of replacing a single window is about $600 but can range between $200 and $1,200, based on several factors. The price is usually influenced by the size of the window, the location of your property and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
Which type of window is the best?
Generally, double-pane windows will be more efficient than single-pane windows and windows that don't open will be more efficient than windows that do. If you want to be sure you'll have the most energy-efficient windows, look for models with the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.
Do I really have to use a window installation company?
Unless you have home repair skills and have the time to replace your own windows, we recommend hiring a professional installer. The window installation process is quite involved and can take anywhere from four to six hours for a single window. Although it's tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and much safer alternative.
How long does it generally take to install windows?
Because a window takes about 30 minutes to install, about 16 windows can be installed during a typical 8-hour work day.
What time of year is the best time to replace my windows?
Replacement windows can be installed any time of the year, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to ensure that too much hot or cold air doesn't get into your home, so the temperature outside doesn't necessarily matter that much. What's more important than the temperature is that the weather should be dry.