Top Rated Window Companies Serving San Lorenzo, CA

Name: Custom Exteriors, Inc.
Address: US
Rating: 4.7

If you really care about choosing a quality window company, we’re here for you. Here’s your access to the best window companies serving San Lorenzo including 94580. These window experts provide velux skylights and picture windows, and they also work on window replacement, window repair and window pane replacement. For 22 years we’ve conducted the most accurate ratings and deepest research of local companies, so you’ll be confident in choosing.

Last Updated May 15, 2026
107,620 people sourced companies in Windows
7,904 Verified Windows Customers Surveyed

7,904

107,620

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Custom Exteriors, Inc.

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Custom Exteriors, Inc. makes Bay Area homes beautiful. For 29 years, the company has sold and installed the highest quality replacement windows, entry...

Main Services

Doors

Windows

Additional Services

New Replacement and Energy-Efficient Windows, Fiberglass and Steel Entry Doors, James Hardie Fiber Cement Siding, Exterior Home Design

Brands

Infinity from Marvin, James Hardie, Marvin, ProVia, Therma-Tru

Coverage Areas

Contra Costa County, Alameda County, San Mateo County, Santa Clara County, Marin County, Solano County, San Francisco

Family Owned

Walk-Ins Welcome

Residential Only

Free Quotes & Consultations

Diamond Certified Video Profile

Doors - Custom Exteriors, Inc. - Contra Costa County

Diamond Certified Company Report

Owners Jeff Kendall (L) and Kevin Gundry

Expert Contributions

642
Rating Surveys

19
Photos
& Videos

5
Researched Articles

Rated Highest in Quality and Helpful Expertise PERFORMANCE GUARANTEED

Quick Connect
(877) 312-3507

Hours CLOSED NOW

License:

785361

Learn how to choose a Windows and more…

Diamond Certified Window Companies Serve These San Lorenzo ZIP Codes

94580

Diamond Certified Window Companies In San Lorenzo

Diamond Certified window companies serving San Lorenzo are rated an average of 4.5 out of 5 stars based on 1297 reviews of 43 rated window companies.
Diamond Certified window companies in San Lorenzo Avg. Star Rating.

We make you an expert at choosing a high-quality window company in the San Lorenzo area.

For those who love quality local window companies.

Within our Diamond Certified Resource:

You choose from only top rated Diamond Certified window companies that serve our San Lorenzo area.
You see each company’s deeply researched report from our research.
You get guidance throughout every phase of hiring a local window company with our Diamond Certified Resource Windows, Coverings and Doors Guide.
You get expert guidance from top rated window companies who are Expert Contributors.
You’re backed by our Performance Guarantee.

You’ll love and refer your friends and family to your new San Lorenzo area Diamond Certified window company. They provide expert services, including arched windows, fiberglass windows, aluminum windows, vinyl windows, sliding windows, and more.

To qualify for Diamond Certified, each company must score Highest in Quality and Helpful Expertise (a 90+ on a 100 scale) and pass all our credential-based ratings. Diamond Certified window companies that serve San Lorenzo residents include Custom Exteriors, Inc..

Every Diamond Certified window company that serves residents in 94580 performs various specialties, including picture windows, bow windows, bay windows, double-hung windows, and custom windows.

How to Choose a Quality San Lorenzo Window Company for Your Family

Click the name of the company to get to their Diamond Certified Company Report page.
Watch their Diamond Certified Video Profile and other videos that we’ve created for you.
Read their verbatim customer survey responses and our researched articles.
Get helpful window tips if they are a Diamond Certified Expert Contributor.
Call or email them to schedule an appointment.

Become a Diamond Certified Preferred Member and Join Your San Lorenzo Neighbors

If you love quality local companies, this is for you. Become a Diamond Certified Preferred Member (always free) and get a double performance guarantee, extra guides and tips, our annual Diamond Certified Directory, and more.

Your Diamond Certified Resource. We make you an expert at choosing.

We make you an expert at choosing local companies by giving you the most accurate ratings, deeply researched company reports and Diamond Certified Guide of all Resource Guides, which cover 70+ industries in the Auto, Home, Health and Personal service categories. Each guide contains 16 key articles that are separated into “Before, During and After the Job” tabs. These are written to guide you through each phase of hiring, starting, managing and ending a job in that specific type of service.

Diamond Certified Resource Compared to Crowd-Sourced Review Sites

Diamond Certified Resource’s ratings of local companies are based on surveys of only verified real customers, so they are the most accurate. This beats crowd-sourced review sites like Yelp, Angi or even Google that are plagued with fake, manipulated, cherry-picked and non-customer reviews, which produce inaccurate and often inflated rating scores.

Diamond Certified Resource’s deeply researched reports of top rated Diamond Certified companies include everything you need to see to be very confident in choosing a top rated local company. Each company report includes detailed quality ratings and scoring, verbatim customer survey responses, a profile video, a company story video, a capabilities table, a photo gallery, researched articles, unique expert contributions from the company’s owner, and more. This beats crowd-sourced review sites that solicit companies to “claim their business listing” and add any type of info to their profiles. This sounds good, but it has led to company profiles that are littered with false claims and incomplete info.

San Lorenzo was founded in 1869, and today, your 24,926 neighbors enjoy creek exploration, spa treatments, dancing, paragliding and fossil hunting. San Lorenzans use Diamond Certified window companies for fiberglass windows, vinyl windows, window glass repair, window repair, bay windows, and more.

Frequently Asked Questions for Windows in San Lorenzo, CA

Q: What are customers of Diamond Certified window companies saying about companies in San Lorenzo, CA?

A: Verified Custom Exteriors, Inc. Customer, 1 of 642
"They gave me good service and understood the technical requirements for the project. They came out and did the work. It was a seamless experience. The owner, Jeff Kendal, is a really nice guy and a pleasure to work with." - Paula E.
All Survey Responses for Custom Exteriors, Inc.

Q: What are some of the most popular brands that Diamond Certified window companies use when working with San Lorenzo residents?

A: Diamond Certified window companies use top-quality brands like CGI Windows, Sierra Pacific, Weather Shield, Loewen and Atrium.

Q: What types of window replacement do window companies offer?

A: Window companies offer a variety of repair services including fixing window leaks, cracked glass, fogged windows, malfunctioning window locks and latches, non-operational windows, damaged window screens, and window sills. They also offer repair or replacement services for window components like sashes, frames, and seals. Some window companies even provide specialized repair services for different types of windows like double-hung windows, casement windows, sliding windows, and bay windows.

Q: Can Diamond Certified window companies work with Andersen products and similar items so I can get velux skylights in San Lorenzo?

A: Yes, Diamond Certified window companies can work with Andersen products and similar items, allowing you to get Velux skylights in San Lorenzo.

Q: What did people search for when they wanted to find the best quality window companies in San Lorenzo?

A: Window Pane Replacement
Window Installation
Sliding Windows
Window Repair
Custom Windows

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View the Full Diamond Certified Guide to Windows, Coverings & Doors