Serving the Bay Area Since 2007
Premium Window & Door Replacement
in Contra Costa County, CA
Cal Coast Window & Door brings premium replacement windows, entry doors, and exterior doors to every city in Contra Costa County. Locally trusted, factory-trained, and fully licensed.
500+ Five Star Reviews
BBB A+ Accredited
CA License #1136909
Financing Available
Window and Door Replacement in Contra Costa County
Contra Costa County homeowners often face hot inland afternoons, seasonal winds, and older windows that leak air and let outside noise travel indoors. Cal Coast Window & Door helps you upgrade comfort and curb appeal with premium products installed for tight sealing, long-term durability, and a clean finish.
We specialize in Replacement Windows, Entry Doors, and Exterior Doors that improve energy efficiency, security, and everyday livability.
Based in Pleasanton and serving the Bay Area since 2013, Cal Coast uses its own fully trained installation teams - no subcontractors - and partners exclusively with top-tier manufacturers. We're fully licensed (CA Contractor License #1136909), BBB A+ accredited, and a proud member of the American Architectural Manufacturers Association. Financing is available through GoGreen and GreenSky.
17+
Years in Bay Area
500+
Five Star Reviews
97%
Customer Satisfaction
7
Counties Served
EXPERT SERVICES IN CONTRA COSTA COUNTY, CA
What We Do
From energy-efficient replacement windows to stunning entry doors and modern indoor-outdoor systems, we offer a complete range of exterior upgrade services for Contra Costa County homeowners.
Custom window replacement and installation with double- and triple-pane options. Our factory-trained installers use thermally broken frames, insulating gas fills, and low-E glass coatings - delivering up to 40% savings on heating and cooling costs while dramatically reducing outside noise.
Double & triple-pane energy-efficient glass
Up to 40% reduction in energy costs
Casement, sliding, bay, bow & specialty shapes
Up to 70% noise reduction
Fiberglass, steel & custom wood entry doors
Weather-tight installation for long-term sealing
Multi-point locking & tamper-resistant hardware
Custom sizing and design options
Premium fiberglass, steel, and custom wood entry and exterior doors that combine curb appeal with serious security. Our full door range covers every opening - from classic entry doors to expansive indoor-outdoor systems.
Stucco, Stone Siding
Additional Service
Stucco & stone veneer siding
Complements window & door upgrade projects
James Hardie fiber cement
Rounding out our exterior services, we also offer stucco, stone veneer, and James Hardie fiber cement siding. Whether you're refreshing a single wall or re-cladding your entire home, our team brings the same precision and care to every siding project.
PREMIUM BRANDS WE INSTALL
Manufacturer Partners
We partner exclusively with industry-leading manufacturers so every product we install meets the highest standards of quality, energy efficiency, and durability. Each brand is chosen for its fit with Bay Area homes and climates.
WINDOWS
DOOR & GLASS SYSTEMS
SIDINGS
WHERE WE WORK
Cities & Zip Codes We Serve in Contra Costa County, CA
Cal Coast Window & Door serves every city and community across Contra Costa County. Whether you're in Oakland, Berkeley, Fremont, or a smaller neighborhood like Sunol or San Lorenzo, we're your local window and door experts.
Complete Contra Costa County, CA Zip Code Reference
| City | Zip Codes |
|---|---|
| Alamo | 94507 |
| Antioch | 94509, 94531 |
| Bethel Island | 94511 |
| Brentwood | 94513 |
| Canyon | 94516 |
| Clayton | 94517 |
| Concord | 94518, 94519, 94520, 94521, 94522 |
| Crockett | 94525 |
| Danville | 94506, 94526 |
| Diablo | 94528 |
| El Cerrito | 94530 |
| Hercules | 94547 |
| Knightsen | 94548 |
| Lafayette | 94549 |
| Martinez | 94553 |
| Moraga | 94556 |
| Oakley | 94561 |
| Orinda | 94563 |
| Pinole | 94564 |
| Pittsburg | 94565 |
| Pleasant Hill | 94523 |
| Port Costa | 94569 |
| Rodeo | 94572 |
| San Ramon | 94582, 94583 |
| Walnut Creek | 94595, 94596, 94597, 94598 |
We Only Install the Best
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Serving all of Alameda County, CA — no obligation, no pressure. Just honest advice and a detailed quote from a team that Bay Area homeowners have trusted since 2013.
