20 Best Window Companies in Oakley, CA (2023 Reviews)
Thinking about improving your house's insulation? The best window replacement companies can help.
We analyzed all the top-rated window companies in Oakley 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
Whether you're doing home renovations or have old windows, windows play a important role in conserving your home's energy. When it's the middle of summer, your outdated and drafty windows could be making your home harder to cool and more uncomfortable for you.
Installing upgraded, efficient windows on your house can help you save money every month on your electric bills — and you can help the environment, too.
Unlike other review sites, EcoWatch ranks window companies based on energy efficiency while also considering cost, customer satisfaction and service area.
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 Oakley
The EcoWatch Reviews team examined dozens of installers across the country to find the best window replacement companies for our readers. The installers mentioned in this article scored the best in our review categories, which include energy-efficient offerings, local expertise, price, availability, customer service 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 Oakley. This provider has 27 years of experience in the window installation industry, and it has become one of the best companies in the business. The company has plenty of positive reviews from customers on online review websites.
You may want to consider opting for Window World if you're looking for a installer 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 has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 Oakley?Prices are not available on Window World’s website because the cost of window installment differs based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. For more accurate information on the cost, you can get a quote from the company.

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 has the best local installation in Oakley. This provider has 60 years of experience in the window installation industry, and it has become one of the best companies in the business. The company has plenty of positive reviews from customers on online review websites.
You may want to consider opting for Milgard if you're looking for a installer 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 WindowsMilgard Windows & Doors has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to 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 Oakley?Prices are not available on Milgard’s website because the cost of window installment differs based on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. For more accurate information on the cost, you can get 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 has the best availability in Oakley. This provider has 27 years of experience in the window installation industry, and it has become one of the best companies in the business. The company has plenty of positive reviews from customers on online review websites.
You may want to consider opting for Andersen if you're looking for a installer 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 WindowsRenewal by Andersen has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to 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 Oakley?Prices are not available on Andersen’s website because the cost of window installment differs based on how many and what type(s) of windows you need. However, 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 get 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 is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This window installation company has been operating since 2002 and currently provides services to 27 states nationwide.
Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 Oakley?Universal does not mention prices 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. If you’d like more accurate pricing information, you can inquire about a quote on the company’s website.
We've recommended providers with good reputations, but keep in mind these are national companies, so the quality of service may depend on your local crew. We have tried to stay unbiased and transparent by listing pros and cons for every company we reviewed.
More Window Companies in Oakley
Renewal by Andersen of San Francisco
Hayward, CA-
Good Customer Service
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Educational Website
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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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Bay Windows
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Sliding Glass
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Commercial Windows
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Stained Glass
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Glass Showers
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Custom Window Designs
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Residential Windows
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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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Glass Showers
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Double-Hung
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Bay Windows
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Sliding Glass
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Fast Delivery
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Custom Window Designs
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Window Replacement
The Glass Guru
Antioch, CA-
Educational Website
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Timely Service
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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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Glass Showers
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Window Repair
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Full-Service Installations
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Aluminum Window Frames
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Tempered Glass
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Commercial Windows
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Double-Hung
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Window Replacement
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Stained Glass
Antioch Glass
Antioch, 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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Commercial Windows
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Sliding Glass
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Glass Showers
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Window Repair
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Residential Windows
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Window Replacement
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Tempered Glass
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Custom Window Designs
Brentwood Glass Shower and Window Company
Brentwood, CA-
Free assessment
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Good Customer Service
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Timely Service
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Price Transparency
Services Offered
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Fast Delivery
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Glass Showers
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Double-Hung
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Window Replacement
Windows & Beyond
Concord, CA-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
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Timely Service
Services Offered
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Bay Windows
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Glass Showers
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Window Replacement
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Double-Hung
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
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Commercial Windows
Dan's Glass Inc
Concord, CA-
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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Window Replacement
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Residential Windows
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Bay Windows
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Fast Delivery
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Glass Showers
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Custom Window Designs
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Window Repair
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Commercial Windows
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Sliding Glass
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Double-Hung
CWD Remodels & Windows
Concord, CA-
Timely Service
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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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Custom Window Designs
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Bay Windows
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Glass Showers
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Window Replacement
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Fast Delivery
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Commercial Windows
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Residential Windows
Bestoff Windows & Construction
Concord, CA-
Good Customer Service
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Free assessment
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Timely Service
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Educational Website
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Price Transparency
Services Offered
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Fast Delivery
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Aluminum Window Frames
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Custom Window Designs
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Window Replacement
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Residential Windows
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Sliding Glass
Concord Glass, Inc.
Concord, CA-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Sliding Glass
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Glass Showers
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Commercial Windows
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Window Repair
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Custom Window Designs
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Residential Windows
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Tempered Glass
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Window Replacement
Cosmic Renovation & Roofing
Concord, 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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Residential Windows
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Fast Delivery
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Window Replacement
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Stained Glass
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Custom Window Designs
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Double-Hung
Pella Windows & Doors of Northern California
Alamo, 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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Bay Windows
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Custom Window Designs
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Sliding Glass
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Window Replacement
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Residential Windows
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Double-Hung
Stockton Window Replacement
Stockton, CA-
Good Customer Service
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Timely Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Window Replacement
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Fast Delivery
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Commercial Windows
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Double-Hung
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Bay Windows
Reborn Cabinets Inc.
Livermore, 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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Double-Hung
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Window Replacement
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Custom Window Designs
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Commercial Windows
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Residential Windows
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Glass Showers
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Fast Delivery
Rojas Construction and Remodeling, Inc.
Walnut Creek, 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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Full-Service Installations
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Window Replacement
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Custom Window Designs
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Glass Showers
Cal Coast Window & Door
Pleasanton, CA-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Residential Windows
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Full-Service Installations
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Window Replacement
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Sliding Glass
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Bay Windows
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Energy-Efficient Options
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Custom Window Designs
Custom Exteriors, Inc
Pleasanton, 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 Replacement
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Fast Delivery
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Custom Window Designs
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Bay Windows
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Residential Windows
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Full-Service Installations
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Sliding Glass
APW Window Replacement
Pleasanton, CA-
Price Transparency
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Good Customer Service
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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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Residential Windows
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Window Replacement
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Bay Windows
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Window Repair
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Commercial Windows
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Double-Hung
Sears Heating and Air Conditioning
Livermore, 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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Residential Windows
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Custom Window Designs
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Glass Showers
Window Replacement Stockton
Stockton, CA-
Timely Service
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Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Custom Window Designs
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Double-Hung
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Window Replacement
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Bay Windows
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Sliding Glass
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Fast Delivery
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Commercial Windows
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Residential Windows
Calculate how much you can expect to pay for window installation and replacement in Oakley, 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 Oakley Saves You Money
By switching to energy-efficient windows, you can take advantage of several benefits, such as:
- Protect your investment: When you have an older home, your windows could also be outdated or drafty. Upgrading and repairing your windows is an important part of maintaining your property and its real estate value.
- 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.
- Save money on electricity bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of household energy use. Switching to energy-efficient windows can help reduce that number, which helps you save more on your bills.
- Better temperature control in your home: Energy-efficient windows can decrease the amount of heat lost through your windows when heating your home.
Estimated Cost of Window Replacement in Oakley
Let's go over the cost of installing new windows and the kinds of services you may need for your home.
How Much Do New Windows Cost?
Though the average of replacing one window is about $600, it can range from $200 to $1,200. This is because the cost of window installations depend on several factors specific to your home, such as the size, material and number of windows you need to replace, as well as the location of your property.
With windows, efficiency is one of the most important factors for many homeowners. Windows with higher efficiency may cost more initially, but by increasing the efficiency of your home — particularly if you live in a hot climate — they can provide decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Oakley homeowners $579+ per year after replacing single-pane windows.
Getting free quotes from multiple providers is the best way to find out which one will work best for your budget.
What Services do Window Installers Offer?
Generally, there are two kinds of window installation services you can get: full-frame and pocket installations.
A full-frame installation replaces the full window, such as the sill, frame, trim and the window panes. As this kind of installation requires more time and labor, it will be more expensive than a pocket installation. A pocket installation means replacing a window without taking out the whole frame, which tends to be cheaper than a full-frame installation.
Your window installation company can help you decide which type of installation you should get.
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 Oakley
In our search to find the most reliable, eco-friendly window installers in Oakley, the EcoWatch Reviews team chose the above companies as the best window installation companies in the city. Along with energy efficiency, we evaluated each installer and ranked them using the following methodology:
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 the best window installation company near you.
Work Quality
We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each installer on this list to make sure its contractors are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have nice things to say about their service from a certain installer, you won't see it featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies may not provide the highest quality service. On the other hand, we want to ensure we're highlighting companies that provide a variety of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a hefty investment, so you'll want to be certain that investment is protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for a while. Window installation companies that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Oakley, CA Window Replacement FAQs
How much should window installation cost?
The national average cost of replacing one window is about $600 but can range between $200 and $1,200, based on a few different factors. The price is typically influenced by the location of your property, the size of the window and the type and material of the window. Also, remember 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 kinds of replacement windows?
The most common kinds of windows for homes include: picture windows, awning windows, double-hung and single-hung windows, bay windows, casement windows, transom windows and slider windows.
When should I use a window installation company?
Unless you're handy and have all of the necessary tools to replace your own windows, we recommend hiring a professional. The process of installing windows is quite involved and can take anywhere from four to six hours for a single window. Although it's tempting to try to save some money by doing it yourself, hiring a professional is a faster, more efficient and safer option.
What time of year is the best time to replace my windows?
Though you can install windows any time of year, warmer weather is usually better for installing replacement windows. Additionally, the weather should be dry, because rain can make the installation more difficult.