Windows 4U serves Brentwood homeowners throughout East Contra Costa, from Deer Ridge and Summerset to Trilogy, Downtown Brentwood, and the newer developments along the delta waterways, with licensed, in-house window and door installation backed by a 4-year workmanship warranty.
Get a Free Brentwood EstimateBrentwood grew rapidly in the 2000s and 2010s, and many of those homes were built with builder-grade aluminum or vinyl windows that are now showing their age, leaking air, fogging between panes, or simply failing to block the heat of an East Bay summer. Windows 4U replaces these windows with high-performance systems from Milgard, Anlin, and other top brands, delivering real improvements in comfort and energy efficiency. We work clean, we finish fast, and you'll talk to Alex or Leon. Not a call center. Every step of the way.
Every service is performed by our in-house crew. No subcontractors, ever.
Retrofit and full-frame window replacement in vinyl, fiberglass, and aluminum. Casement, double-hung, sliding, picture, bay & bow, all styles installed with precision and minimal disruption to your home.
Learn more →Steel and fiberglass entry doors that improve your home's curb appeal, security, and energy efficiency. Includes full hardware installation and weatherstripping.
Learn more →Sliding glass doors and French-style patio doors for Brentwood homes with open backyard spaces and indoor-outdoor living areas. Vinyl, aluminum, and fiberglass systems available.
Learn more →Brentwood's hot summers and cool winters put real demands on windows, heat gain through west-facing windows, condensation on cold mornings, and air leakage through aging seals all add up on your utility bills. We recommend and install windows with low solar heat gain coefficients and superior insulating values for East County climates, so you get genuine energy savings, not just a cosmetic upgrade.
We serve all of Contra Costa County. Every project is run personally by Alex and Leon Elbert.
Also serving neighboring cities: Concord, Clayton, Walnut Creek, Martinez, and the wider East Bay.
"We bought our Summerset home knowing the windows needed replacing. Windows 4U gave us a competitive price, came out when they said they would, and did the whole house in one day. The difference in temperature in our west-facing rooms is unbelievable. Wish we'd done this years ago."
Trusted Brands We Install
