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Best Window Replacement Companies in Gilroy, CA

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Written By Max Peterson | Last Updated: February 05, 2024

You might be installing replacement windows to enhance your home's appearance, lower your energy usage, or protect your home from inclement weather. If your windows are deteriorating or damaged, it's probably time to get new ones. Hiring a certified window company will help you get a top-quality outcome and help you steer clear of costly mistakes from attempting to handle the job yourself.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 Gilroy Window Installation Companies

By choosing one of these renowned companies for window replacement in Gilroy, you'll enjoy your new windows in no time.

The This Old House Reviews Team evaluated scores of window installers in and around Gilroy. We considered the following factors to select the best window replacement services:

  • Services and warranties
  • Professional experience and licensure
  • Product quality
  • Energy-efficiency guarantees
  • Customer reviews and recommendations

Delta Glass Logo

Delta Glass

Based on 29 customer reviews.

Services Offered

Glass Repair Window Repair Commercial Windows Window Install & Replacement


  • Price transparency
  • Educational website
  • Good customer service
1811 Freedom Blvd, Freedom, CA 831-724-6385 delta-glass.com
Hollister Gold Coast Glass, LLC Logo

Hollister Gold Coast Glass

Based on 21 customer reviews.

Services Offered

Window Install & Replacement Mirrors Window Repair Commercial Windows Custom Glass Glass Repair Glass Showers


  • Good customer service
  • Free assessment
  • Price transparency
405 Monterey St Ste A, Hollister, CA 831-313-0266 goldcoastglassca.com
The Skylight Place Logo

The Skylight Place

Based on 36 customer reviews.

Services Offered

Glass Repair Mirrors Window Repair Glass Showers Skylights Window Install & Replacement Commercial Windows


  • Price transparency
4850 Capitola Rd, Capitola, CA 831-476-2023 theskylightplace.com
Blossom Hill Glass Logo

Blossom Hill Glass

Based on 26 customer reviews.

Services Offered

Custom Glass Bay Windows Sliding Glass Doors Commercial Windows Glass Showers Window Install & Replacement Mirrors


  • Free assessment
  • Educational website
  • Good customer service
370 Piercy Rd, San Jose, CA 408-629-7500 blossomhillglass.com
Integrity Windows & Doors Logo

Integrity Windows & Doors

Based on 95 customer reviews.

Services Offered

Fiberglass Frames Andersen Sliding Glass Doors Wood Frames Vinyl Frames Glass Doors Simonton Window Install & Replacement Aluminum Frames Milgard Bay Windows


  • Timely service
  • Price transparency
  • Good customer service
4238 Monterey Hwy B, San Jose, CA 408-225-2600 408windows.com
Glasswork By Design Logo

Glasswork By Design

Based on 22 customer reviews.

Services Offered

Window Repair Milgard Mirrors Window Install & Replacement Commercial Windows Sliding Glass Doors Glass Showers


  • Free assessment
  • Good customer service
  • Price transparency
131 E Alisal St, Salinas, CA 831-320-4293 glassworkbydesign.net


Based on 29 customer reviews.

Services Offered

Milgard Vinyl Frames Custom Window Designs Aluminum Frames Window Install & Replacement Bay Windows Double-Hung Sliding Glass Doors


  • Price transparency
  • Free assessment
  • Good customer service
262 Hillsdale Ave, San Jose, CA 408-999-1111 generalbcontractor.com
Lighthouse Windows Logo

Lighthouse Windows

Based on 35 customer reviews.

Services Offered

Window Install & Replacement Fiberglass Frames Milgard Commercial Windows Aluminum Frames Sliding Glass Doors Bay Windows Simonton Marvin


  • Price transparency
  • Educational website
  • Free assessment
317 Potrero St Ste E, Santa Cruz, CA 831-426-2601 lighthouse-windows.com
Sandman Glass Inc Logo

Sandman Glass

Based on 15 customer reviews.

Services Offered

Glass Showers Milgard Custom Glass Glass Repair Wood Frames Window Repair Skylights Window Install & Replacement Commercial Windows Mirrors


  • Good customer service
  • Price transparency
902 Soquel Ave, Santa Cruz, CA 831-464-1966 sandmanglassinc.com

More Local Window Companies

Angle Construction

User Reviews: 4.1/5 

54 Old El Pueblo Rd Suite A
Scotts Valley, CA 95066

J & M Windows and Glass

User Reviews: 4.6/5 

745 E McGlincy Ln
Campbell, CA 95008

J&M Windows and Glass, Inc

User Reviews: 4.6/5 

745 E McGlincy Ln
Campbell, CA 95008

American Window Specialist

User Reviews: 4.6/5 

1550 Dell Ave i
Campbell, CA 95008

Alum Rock Hardware, Windows & Doors

User Reviews: 4.7/5 

2243 Alum Rock Ave
San Jose, CA 95116

AMC Glass Company, Inc.

User Reviews: 4.3/5 

1999 Monterey Hwy # 110
San Jose, CA 95112

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Gilroy
Annual Energy Efficient Windows Savings: $562
Average Max Temp: 71°F
Average Min Temp: 50°F
Average Daily Sunlight: 69%
Average Annual Snowfall: 4.6"
Average Monthly Precipitation: 1.74"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Gilroy

Trustworthiness is key when it comes to choosing a window installer. However, your chosen company should also align with your priorities and respect your vision. Consider the following factors during your company search:

Window Cost by Type

When it comes to upgrading your windows, cost-effectiveness is most important. Each window you purchase should deliver top-notch durability at a fair price point. Choosing cheap windows could actually raise your overall cost, since they come with a shorter lifespan and more intensive maintenance needs. The final cost of your window replacement will depend on the particular materials, styles, and sizes you need. Single-hung windows often cost less due to their straightforward style and simple mechanisms, while a custom-cut arch window in a master suite will cost more. It's recommended to speak with a reliable installer to determine your best options.

In this table, you can find cost data for the most common residential window types to determine how much you might pay.

Window Types Average Cost
Arched $271-$1667
Awning $393-$1095
Bay $906-$6721
Custom $403-$1120
Casement $313-$1817
Double-hung $146-$945
Egress $268-$671
Glass Block $53-$680
Picture $235-$1742
Single-hung $106-$1792
Skylight $134-$1618
Sliding $308-$1568
Storm $63-$443
Transom $328-$687

Window Material Cost

Window prices also vary based on material. Each option gives you unique advantages depending on the local climate and energy-saving goals. Vinyl and fiberglass are readily-available materials, so they tend to cost less. Likewise, aluminum and composites look sleek and stay strong against the elements, so they tend to cost more.

Window Types Average Cost
Aluminum $63-$1792
Composite $647-$1453
Fiberglass $106-$906
Vinyl $218-$2016
Wood $323-$1817

Other Window Replacement Costs

Your contractor will factor the price for your windows and the value of their services into its total estimate. Make sure to factor in the cost of installation, guarantees, and any other supplemental fees that your project may need.

Experience and Training

Browse a company's website and talk to a representative to learn more about its product and service offerings, pricing, and warranties. Many companies also keep online portfolios that exhibit past projects.

Ensure that the company specializes in window replacement. The more specific training its staff has, and the longer it has been active, the more likely it will deliver high-quality service.

Licensing and Credentials

A California window company must be licensed as a Window Coverings Contractor, General Building Contractor and Glazing Contractor if it handles jobs valued at over $500. Each license has its own test and work requirements. If a contractor is caught working without a license, they'll have to pay hefty penalties.

Types of Windows Offered

There are a variety of replacement window types you can choose from, and it's essential to find a company that focuses on installing the ones you want. Check a company's website and reviews for any of these types:

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Also, check the kind of window framing materials a company works with. Each material has distinct price points, life spans, and energy performance capabilities. Common materials include composite, aluminum, vinyl, wood and fiberglass.

Customer Feedback

Perhaps the best way to evaluate window companies for your job is to find out what previous customers have said about them. Trustworthy sources for customer reviews include Yelp, Google, and the BBB Talk to people you know who have used the company you'd like to hire, and ask a representative for professional references.

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Frequently Asked Questions About Window Replacement in Gilroy

What are the benefits of hiring a window installer?

By hiring a professional, you don't need to worry about measurement missteps or lacking the right tools. A window installation crew is well-equipped with the right tools and knowledge to do the job safely and precisely. You can also get fast, informed answers to your questions and personalized assistance to make the most of your new windows

How can I fix a rotting or molding window frame?

A molding or rotting window frame is usually a moisture issue. You likely won't have to replace the entire window. Instead, a simple framing job could do. It's best to consult a window expert to ensure adequate sealing and weatherproofing.

What are some important metrics to know when I shop for replacement windows?

One of the first metrics you'll notice when looking at a replacement window is its U-factor. The lower this number, the better the window is at preventing extreme cold and heat from entering your home. Other numbers to consider include:
  • "visible transmittance," which indicates how much light passes through the window
  • "solar heat gain coefficient," which shows how much UV light the window absorbs and releases as heat
  • "Condensation resistance," which determines how well a window can resist moisture (the higher the number, the better)
  • "Air leakage," which evaluates how easy it is for air drafts to occur (the lower the number, the better)

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star