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Best Window Replacement Companies in San Ramon, CA

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  5. San Ramon
Written By Max Peterson|Last Updated: February 05, 2024

You might be installing new windows to improve your home's appearance, use less energy, or protect your home from the rain and gusty winds. A qualified window contractor can help you get the most value from your replacement windows, so you can increase their lifespan.

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 San Ramon Window Installation Companies

By working with one of these esteemed companies for window replacement in San Ramon, you'll reap the benefits of new windows in no time.

San Ramon residents can trust the This Old House Reviews Team to provide authoritative, updated window provider recommendations. To discover the best installers, we emphasize these five criteria:

  • Professional experience and licensure
  • Customer reviews and recommendations
  • Energy-efficiency guarantees
  • Services and warranties
  • Product quality
Cal Coast Window & Door Logo

Cal Coast Window & Door

Based on 112 customer reviews.

Services Offered

Window Replacement/installationGlass DoorsBay WindowsEnergy-Efficient Options


  • Good customer service
  • Price transparency
  • Free assessment
5673 W Las Positas Blvd Suite 203, Pleasanton, CA 925-398-8184 calcoastwindows.com
Quality Windows & Doors Logo

Quality Windows & Doors

Based on 29 customer reviews.

Services Offered

Glass DoorsWindow Replacement/installation


  • Educational website
  • Price transparency
  • Free assessment
3732 Stanley Blvd Ste B, Pleasanton, CA 925-484-1747 qwdwindowsanddoors.com
Glass Doctor of The Bay Area Logo

Glass Doctor of The Bay Area

Based on 119 customer reviews.

Services Offered

Custom GlassWindow RepairWindow Replacement/installationGlass RepairBay WindowsEnergy-Efficient OptionsMirrorsGlass Showers


  • Educational website
  • Price transparency
  • Good customer service
773 Berry Ave, Hayward, CA 510-264-5277 glassdoctor.com
Custom Exteriors, Inc Logo

Custom Exteriors

Based on 123 customer reviews.

Services Offered

Custom Window DesignsGlass DoorsBay WindowsWindow Replacement/installationEnergy-Efficient Options


  • Educational website
  • Price transparency
  • Free assessment
2142 Rheem Dr Ste E, Pleasanton, CA 888-957-7800 custom-exteriors.com
Reborn Cabinets Inc. Logo

Reborn Cabinets

Based on 469 customer reviews.

Services Offered

Double-HungGlass ShowersWindow Replacement/installationBay Windows


  • Good customer service
  • Price transparency
  • Educational website
1306 Stealth St A, Livermore, CA 408-359-4093 reborncabinets.com
Bay Home & Window Logo

Bay Home & Window

Based on 87 customer reviews.

Services Offered

Bay WindowsCustom Window DesignsWindow Replacement/installation


  • Good customer service
  • Educational website
  • Price transparency
40 California Ave Suite H, Pleasanton, CA 925-846-3400 bayhomeandwindow.com
Pleasanton Glass Company Logo

Pleasanton Glass Company

Based on 16 customer reviews.

Services Offered

Window RepairCustom GlassGlass ShowersMirrorsWindow Replacement/installationGlass Doors


  • Good customer service
  • Educational website
  • Price transparency
4337 First St, Pleasanton, CA 925-846-2628 pleasantonglass.com
Luxe Concepts Windows & Glass Logo

Luxe Concepts Windows & Glass

Based on 17 customer reviews.

Services Offered

Window Replacement/installationGlass DoorsGlass ShowersMirrors


  • Good customer service
  • Educational website
  • Price transparency
2193 E 14th St, San Leandro, CA 510-346-2662 luxeconceptsinc.com
Lafayette Glass Company Logo

Lafayette Glass Company

Based on 25 customer reviews.

Services Offered

Custom GlassWindow RepairWindow Replacement/installationGlass ShowersGlass DoorsEnergy-Efficient OptionsMirrors


  • Free assessment
  • Timely service
  • Price transparency
3375 Mount Diablo Blvd, Lafayette, CA 925-284-9510 lafayetteglasscompany.com

More Local Window Companies

Sears Heating and Air Conditioning

User Reviews: 4.3/5 

283 E Airway Blvd
Livermore, CA 94551

Windows & Beyond

User Reviews: 4.7/5 

1027 Shary Ct
Concord, CA 94518

Rojas Construction and Remodeling, Inc.

User Reviews: 4.2/5 

2072 Essenay Ave
Walnut Creek, CA 94597

Pella Windows & Doors of Northern California

User Reviews: 4.5/5 

2251 Claremont Ct
Hayward, CA 94545

Diablo Custom Screen & Glass

User Reviews: 4.5/5 

1065 Shary Cir
Concord, CA 94518

Home Services at The Home Depot

User Reviews: 4.0/5 

1933 Davis St
San Leandro, CA 94577

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 San Ramon
Annual Energy Efficient Windows Savings:$579
Average Max Temp:71°F
Average Min Temp:49°F
Average Daily Sunlight:68%
Average Annual Snowfall:0.2"
Average Monthly Precipitation:1.47"

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 San Ramon

It's important to find a window provider that matches your specific values, needs, and preferences. Consider the following points during your search:

Window Cost by Type

When it comes to upgrading your windows, cost-effectiveness is key. Each window you buy should deliver unparalleled durability at an affordable price point. Although premium windows may come with a higher initial price tag, they often provide better long-term value due to their longer lifespan. The age of your home, as well as the materials, styles, and sizes of windows you opt for, can affect pricing. 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 consult a vetted installer to figure out your ideal options.

To help you form a rough estimate, this table shows the typical cost of the most common residential window types.

Window TypesAverage Cost
Glass Block$46-$584

Window Material Cost

You'll also need to pick a window material. Homeowners often make their selection by considering the local climate, energy efficiency objectives and aesthetic preferences. Aluminum windows are perfect for sleek, modern designs, but they cost more up-front. Wood windows cost less up-front, but you'll need to invest in regular maintenance to prevent the frame from warping and wear. Vinyl is readily available and tends to cost less, but don't underestimate its strong durability and low maintenance needs.

Window TypesAverage Cost

Other Window Replacement Costs

Your total cost for new windows will also include applicable warranty fees, permit-related costs (if required), and labor. Be sure to discuss each of these factors with a sales representative before committing to a window company.

Experience and Training

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

Ensure that the company focuses on window replacement. The more specialized training its staff has, and the longer it has been in business, the more likely it will deliver excellent craftsmanship.

Licensing and Credentials

A California window installer must be licensed as a Window Coverings Contractor, General Building Contractor and Glazing Contractor if it performs jobs valued at over $500. Each certification 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

No two contractors offer the same window types and materials. Look for one that focuses on the type you want for your home.

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

Customer Feedback

Reading other customers' stories is one of the smartest ways to screen potential window companies. Trustworthy sources for customer reviews include Trustpilot, the BBB, and Google Referrals can also help you in your company search. Ask each company you're interested in for a list of references, and talk to family and friends about who they use for window installations.

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Frequently Asked Questions About Window Replacement in San Ramon

Why should I hire a professional to install or replace my windows?

Window replacement is an important expense that greatly impacts your home's comfort and energy efficiency. Hiring a professional window company to oversee your project ensures your windows will fit correctly, perform optimally, and be properly sealed. Companies also typically include a guarantee that addresses required maintenance and most needed fixes.

How can I fix a rotting or molding window frame?

A molding or rotting window frame is usually a moisture issue. Luckily, you may not have to replace the entire window. Instead, a simple framing job could do. It's best to consult a window professional to ensure correct sealing and weatherproofing.

How can I gauge the quality of a replacement window?

You can determine the quality of a new window by considering some key numbers, including the following:
  • Air leakage rating, which measures how tight a window's seal is
  • Condensation resistance, which rates how a window holds moisture
  • U-factor, which measures a window's temperature-insulating capability
  • Visible transmittance, which measures how much visible light passes through a window
  • Solar heat gain coefficient, which determines how much heat from sunlight can pass through the window

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