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10 Best Window Replacement Companies in Mill Valley, CA

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Written By David Cusick

Last Updated April 2024

Windows play an important role in your house's appearance and energy efficiency. Replacing your windows is a great way to increase the value of your home. Damaged or outdated windows can cost you in power bills — about an extra $461 a year in Mill Valley. The Department of Energy estimates that 25–30% of your home’s heat or cool air could be lost through your windows. Our guide to the best window installers in Mill Valley will help you select the best installer for you.

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Top 10 Best Window Replacement Companies in Mill Valley

Renewal by Andersen of San Francisco

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30806 Santana St, Hayward, CA 94544 (510) 803-3110 renewalbyandersen.com

Educational website

Good customer service

Free assessment

Price transparency

Services Offered

Bay windows
Skylights
Window replacement/installation
Glass doors
Double-hung

Window Factory

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2100 Redwood Hwy, Greenbrae, CA 94904 (415) 924-3300 bayareawindowfactory.com

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Educational website

Good customer service

Services Offered

Glass doors
Bay windows
Metal frames
Window replacement/installation
Fiberglass frames
Vinyl frames
Wood frames

Sunset Glass Inc

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4301 Irving St, San Francisco, CA 94122 (415) 664-1626 sunsetglassinc.com

Good customer service

Price transparency

Free assessment

Educational website

Services Offered

Fiberglass frames
Metal frames
Glass showers
Window replacement/installation
Glass doors
Tempered glass
Wood frames
Mirrors
Vinyl frames

Glass & Sash Inc.

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425 Irwin St, San Rafael, CA 94901 (415) 456-2240 glassandsash.com

Price transparency

Good customer service

Educational website

Services Offered

Mirrors
Skylights
Window replacement/installation
Energy-efficient options
Bay windows

Sky's Windows Screens & Mirrors

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5th St, Richmond, CA 94804 (510) 689-6025 skyswindows23.wixsite.com

Educational website

Price transparency

Good customer service

Free assessment

Services Offered

Window replacement/installation
Mirrors
Bay windows
Window repair

Acacia Glass Co

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3452 Geary Blvd, San Francisco, CA 94118 (415) 661-4591 acaciaglassco.com

Price transparency

Good customer service

Free assessment

Services Offered

Bay windows
Custom glass
Glass showers
Window replacement/installation

Ace Glass Company

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381 11th St, San Francisco, CA 94103 (415) 395-0806 sfaceglass.com

Good customer service

Price transparency

Free assessment

Services Offered

Window repair
Glass repair
Storm/impact windows
Bay windows
Window replacement/installation
Glass showers
Tempered glass
Glass doors
Mirrors

Home Services at The Home Depot

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111 Shoreline Pkwy, San Rafael, CA 94901 (415) 323-5640 homedepot.com

Price transparency

Good customer service

Free assessment

Educational website

Services Offered

Glass doors
Window replacement/installation

Delta Windows

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369 3rd St, San Rafael, CA 94901 (415) 272-5690 mydeltawindows.com

Good customer service

Price transparency

Free assessment

Services Offered

Energy-efficient options
Bay windows
Window replacement/installation

North Star Glass and Windows

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1455 Francisco Blvd E, San Rafael, CA 94901 (415) 455-0720 northstarglassinc.com

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Price transparency

Services Offered

Glass showers
Mirrors
Window replacement/installation
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Mill Valley?

Window installation and replacement costs will be influenced by a number of factors, including the number and size of the windows, how difficult your windows are to access or install, and the materials you choose. On average, Mill Valley homeowners spend around $300 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

Installing new energy-efficient windows can significantly enhance your home's noise reduction, insulation, comfort, appearance, and value. Some clear signs it's time for new windows include the following:

  • Fogging between window panes, condensation issues, or rotting window frames allowing moisture intrusion into the home.
  • Cold air and drafts coming in through old, loose-fitting windows.
  • Discomfort and high energy bills from poor insulation around windows.
  • Windows that are hard to close, open, or lock properly due to wear and age.
  • Inefficient and outdated window styles that take away from your house's curb appeal.

How To Choose a Window Company

Selecting a window installer with appropriate qualifications helps ensure a smooth installation. We review the most important considerations for selecting a qualified company below.

Experience

Make sure you hire a seasoned local installer with a long record of successfully installing and replacing windows. Companies that have served Mill Valley for years are more likely to understand the local climate and local homeowners' needs. Get references from recent clients to confirm a company provides quality installations.

Certifications

Choose an installer that’s certified like leading window companies, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Suitable credentials indicate they've received appropriate instruction in installation best practices. Make sure installers are staff rather than subcontractors, and confirm that any technicians working on your home have certification.

Reputation

Read through online reviews, check the Better Business Bureau (BBB), and ask for local references. Review customer feedback to make sure that the company consistently provides quality work and good customer service. Avoid providers that have complaints of shoddy work or unfinished jobs.

Process

A reputable provider will give you a comprehensive project plan, reasonable timeline, clear expectations, and an overview of all material and installation options. Avoid providers that offer unclear quotes or timelines. Insist on ongoing contact throughout, so you aren't caught off guard once the work begins.

Warranties

Seek out companies that stand behind their work and offer warranties on labor and materials. This demonstrates trust in their window installations. Seek out unlimited lifetime warranties that can even transfer to new homeowners.

Materials

Ensure that a company works with durable, energy-efficient window brands that work with your budget. Look for design flexibility, enhanced UV protection, and good energy ratings. Confirm the window materials have their own manufacturer warranties as well.

Frequently Asked Questions About Window in Mill Valley, CA

The ideal time to install windows in Mill Valley is when temperatures are moderate, generally in the spring or fall. These conditions allow installers to do their work with less worry about the weather.

The best type of replacement window for your Mill Valley home will depend on your home's age, as well as your personal style and budget. You'll want to consider the style of your home — such as if it's old — so your new windows match. Wooden windows can give a classic look and feel, while vinyl windows are more popular in more modern homes. Fiberglass-framed windows are also a popular choice, since they are energy efficient and long-lasting.

Windows made from vinyl, wood, or fiberglass tend to last the longest, with some lasting for close to 45 years. Vinyl windows are especially durable and low-maintenance, making them an excellent choice if you want windows that will last a long time. Extra glazing can help reduce your heating and cooling bills over time.

It varies on your specific needs and budget, but generally it's advised to replace all your windows at once if they're not energy efficient. Replacing all your windows at once ensures that you'll get the most out of your energy efficiency and can possibly save you money in the long run. This is important in Mill Valley, where the average energy bills are roughly $1,538 a year.

Window companies in Mill Valley typically offer a range of services, including measuring and installing new windows, fixing existing windows, swapping out window glass, and installing window treatments. They may also offer extra services such as weatherproofing or cleaning.

Getting windows professionally installed can provide a number of benefits. Professional installers can make sure that your windows are properly installed, weatherproofed, and insulated, minimizing air leakage and maximizing energy efficiency. Professional installers are also well-equipped with the necessary tools and techniques to get the job done, saving you time and money.

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