30 Best Window Replacement Companies in Mill Valley, CA (Mar 2023)
Window Companies Near Me
Looking to improve your property's insulation? The best window replacement companies can help.
We analyzed all the top window installers in Mill Valley and selected the top 30 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
A guide on the best window replacement companies in Mill Valley may not seem like the most captivating article on EcoWatch, but trust us, windows have a more direct impact on your life than you might realize. If you have outdated, drafty windows, your AC or heating system could be working overtime to heat or cool your house. This means spending more on electric bills.
Thankfully, helping you save energy with more efficient windows also helps our goals of conserving energy and the resources it takes to generate it.
We've compiled a list of the best installation companies to help you in your search, so you can not only benefit from brand new windows, but also save money on your power bills.
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Award-winning company
- Great industry reputation
- No lifetime warranty
Best Affordability
Window World
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Quality of service will depend on your area
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Window Replacement Companies in Mill Valley
The EcoWatch team evaluated several window installation companies across Mill Valley to narrow our list down to the top ones. The companies in this article scored best in our review categories, such as energy-efficient offerings, local expertise, customer service, price, availability and more.

Renewal by Andersen
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Manufactures products in-house
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Award-winning company
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Great industry reputation
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No lifetime warranty
Renewal by Andersen has the best availability in Mill Valley. This window installation company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. Many positive reviews on customer review websites back the provider's reputation.
If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, Andersen may be the company for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Mill Valley?Andersen doesn't have any prices listed 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. The best way to get more accurate pricing information is to ask for a free quote from the company.

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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Quality of service will depend on your area
Window World offers windows expertise in Mill Valley. This company has been operating since 1995 and currently serves 200 locations nationwide.
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 WindowsWindow World is an Energy Star partner and offers a variety of energy-efficient windows. 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 Mill Valley?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. If you'd like to know for sure, you can inquire about 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
Milgard Windows & Doors offers the best local installation in Mill Valley. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has been in business since 1962 and currently services Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. Hundreds of positive reviews on customer review websites back the provider's reputation.
You may want to consider going with Milgard if you're looking for a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsMilgard Windows & Doors carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want 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 Mill Valley?Pricing information is not available on Milgard's website because the cost of window replacement depends on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. Requesting a free quote on its website is the best way to know for sure.

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 provides the best warranty in Mill Valley. Universal has been in the window installation industry for about 20 years. 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 WindowsThe 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. Not all of Universal's windows are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Mill Valley?Universal doesn't have any pricing information 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. Requesting a free quote on its website is the best way to get more accurate pricing information.
We strive to be unbiased and transparent by mentioning pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Replacement Companies in Mill Valley
Renewal by Andersen of San Francisco
Hayward, CA-
Educational Website
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Arrives on Time
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Consistent Workmanship
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Award-Winning
Services Offered
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Custom Window Designs
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay Windows
Window Replacement San Leandro
San Leandro, CA-
Helps Educate Customers
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Free Quotes
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Reliable Service
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Excellent Customer Service
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Best Exteriors
San Leandro, CA-
Consistent Workmanship
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Good Customer Service
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Price Transparency
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No-fee Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Berkeley
Berkeley, CA-
Free Quotes
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Reliable Appointment Windows
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Best Exteriors
Oakland, CA-
Good Customer Service
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Consistent Workmanship
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No-Hassle Pricing
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No-fee Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Vallejo
Vallejo, CA-
Dependable Service
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No-fee Quotes
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Arrives on Time
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement San Francisco
San Francisco, CA-
Educational Website
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No-fee Quotes
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Price Transparency
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Dependable Service
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Oakland
Oakland, CA-
Excellent Customer Service
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Reliable Service
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No-Hassle Pricing
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No-fee Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Alameda
Alameda, CA-
Educational Website
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Consistent Workmanship
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Timely Service
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Price Transparency
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Walnut Creek
Walnut Creek, CA-
Excellent Customer Service
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Consistent Workmanship
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Timely Service
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Price Transparency
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Concord
Concord, CA-
Educational Website
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Consistent Workmanship
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Union City
Union City, CA-
Good Customer Service
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No-Hassle Pricing
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Helps Educate Customers
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Free Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement San Mateo
San Mateo, CA-
Good Customer Service
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No-fee Quotes
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Consistent Workmanship
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Educational Website
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Best Exteriors
Oakland, CA-
Price Transparency
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Free Quotes
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Educational Website
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Reliable Service
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Hayward
Hayward, CA-
Helps Educate Customers
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Reliable Appointment Windows
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Price Transparency
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No-fee Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Richmond
Richmond, CA-
No-Hassle Pricing
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Timely Service
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Dependable Service
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No-fee Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Bestoff Windows & Construction
Concord, CA-
Good Customer Service
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Helps Educate Customers
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No-Hassle Pricing
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Dependable Service
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Contra Costa Plate & Mirror Co
Pacheco, CA-
No-fee Quotes
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Award-Winning
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Consistent Workmanship
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Good Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Tempered Glass
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Custom Window Designs
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Commercial Windows
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Double-Hung
Epic Home Upgrades and Construction
San Leandro, CA-
No-fee Quotes
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Good Customer Service
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Reliable Service
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Educational Website
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
The Window Specialists, Inc.
Oakland, CA-
Helps Educate Customers
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Reliable Service
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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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Residential Windows
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Energy-Efficient Options
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Business Windows
Lafayette Glass Company
Lafayette, CA-
Reliable Service
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Helps Educate Customers
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Free Quotes
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Award-Winning
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Residential Windows
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Sliding Glass
Danville Glass Company
Danville, CA-
Consistent Workmanship
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Timely Service
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Educational Website
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Locally Recognized for Quality
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Sliding Glass
Save Energy Company
Petaluma, CA-
Helps Educate Customers
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Arrives on Time
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No-Hassle Pricing
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Reliable Service
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Aames Windows & Doors Inc
Alamo, CA-
No-fee Quotes
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Excellent Customer Service
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Consistent Workmanship
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Price Transparency
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Double-Hung
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Sliding Glass
Build Glass Company - Residential & Commercial Glass Repair Services
Richmond, CA-
Dependable Service
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Price Transparency
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Excellent Customer Service
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Free Quotes
Services Offered
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Residential Windows
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Glass Showers
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Tempered Glass
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Doors
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
California Glass of Vallejo, Inc.
Vallejo, CA-
Reliable Service
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Good Customer Service
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Locally Recognized for Quality
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No-Hassle Pricing
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Custom Windows
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Full-Service Installations
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Commercial Windows
American Home Renewal, Inc.
South San Francisco, CA-
Price Transparency
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Award-Winning
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Excellent Customer Service
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Free Quotes
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Energy-Efficient Options
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Double-Hung
Dan's Glass Inc
Concord, CA-
Consistent Workmanship
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No-Hassle Pricing
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Arrives on Time
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Business Windows
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Double-Hung
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Sliding Glass
The Window and Door Shop, Inc.
San Francisco, CA-
Excellent Customer Service
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Price Transparency
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No-fee Quotes
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Educational Website
Services Offered
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
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Sliding Glass
Vinyl Casement Windows
San Mateo, CA-
Reliable Service
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Free Quotes
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Helps Educate Customers
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Price Transparency
Services Offered
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Architectural Glass
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
How Installing Energy-Efficient Windows in Mill Valley Saves You Money
There are quite a few perks of upgrading to energy-efficient windows. A few reasons you may want to consider making the change include the following:
- Reduce your carbon footprint: In Mill Valley, you can reduce your indirect greenhouse gas emissions by about 117 pounds per year when you switch to energy-efficient windows.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
- Save money on electricity bills: Upgrading to energy-efficient windows reduces your energy bills by about 12% because you use less energy.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, especially if your home is on the older side.
Estimated Cost of Window Replacement in Mill Valley
When considering window installation, each company offers varying services and prices. Let's look at some average costs and services.
How Much Do New Windows Cost?
Typically, Mill Valley homeowners can anticipate their window installations to range from $250 to $1,200. The most common installations sit at around $600. But costs will vary considerably depending on the number of windows you need, the current condition of your home, the quality of your products and your location. Many window companies also offer replacement door installations and other add-ons like baths, shutters, coating and more. Additional services will increase your overall project costs.
With windows, efficiency is the most important factor for many homeowners. Windows with higher efficiency may cost more upfront, but by increasing the efficiency of your home — particularly during the summer and winter — they can provide decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Mill Valley homeowners $451+ per year after replacing single-pane windows.
Something else that influences the total cost is the material of the frame you select. Aluminum frames are usually the least pricey and are sturdy and relatively maintenance-free, but they provide poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
There are typically two types of window replacement services: full-frame and pocket installations.
A full-frame installation replaces the total window, including the windowsill, frame, trim and the window panes. Because this type of installation is more involved, it will be more expensive than a pocket installation. A pocket installation involves replacing a window without replacing the frame. So, instead of taking out the whole window and reinstalling it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company can recommend the best type for your project. In Mill Valley, the decision will mostly depend on how much damage there is currently and how old your existing frames are.
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Award-winning company
- Great industry reputation
- No lifetime warranty
Best Affordability
Window World
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Quality of service will depend on your area
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
How We Choose the Best Window Installers in Mill Valley
In our hunt to make your home improvements easier and more eco-friendly in Mill Valley, the EcoWatch team examined dozens of companies before landing on these. We've evaluated the top window installers in Mill Valley mostly based on their energy efficient offerings, as it's the most sustainable option and the best one for homeowners. Energy Star certified windows have been shown to lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
Because this is a guide for Mill Valley, we only included companies that cover the city. There are certainly other reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Mill Valley.
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 company on this list 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 trends in recent online reviews to find the companies with the highest rates of customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across nearly every category, including quality of installation, cost, quality of parts, professionalism, warranty and more.
Cost
This one is a give-and-take: as with other services, cheap window companies won't always provide the highest quality service. On the other hand, we want to make sure we're highlighting companies that offer a variety of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a considerable investment, so you'll want to make sure that investment is protected. Window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Mill Valley's climate, homeowners need to be wary of rot, low efficiency and water damage. We factored in local experience to reflect the ability of Mill Valley window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Mill Valley, CA Window Replacement FAQs
What is the average cost to replace windows in a home?
The average cost of installing a single window can range from $450 to $650. There are a variety of factors that affect how much it costs, which include the materials used in designing the windows, how energy-efficient the windows are, styles and sizes of windows, local labor costs, the number of windows and your property's location.
What are the most common kinds of replacement windows?
There are various kinds of windows you can get for your home, such as double-hung and single-hung windows, transom windows, picture windows, awning windows, bay windows, slider windows and casement windows.
When should I use a window installation company?
Unless you have experience with home improvement projects and have the time needed to replace your own windows, we recommend hiring a professional installer. The window installation process is complicated and can take anywhere from four to six hours for a single window. Although it's tempting to try to save money by doing it yourself, hiring a company is a faster, more efficient and safer alternative.
When is it time to replace your windows?
Windows typically have a lifespan of about 20 to 30 years, but anytime you see damage on your windows, it's a good time to have an expert take a look at them to determine if they are in need of a repair or replacement.