Windows 4U is a family-built company founded by brothers Alex and Leon Elbert, two East Bay contractors who built their reputation by making sure every job is done the right way, every time.
Alex and Leon Elbert grew up in the trades. Between the two of them, they bring over 20 years of experience in the window and door industry — from learning the business on job sites across the East Bay to running complete home renovation projects and new construction installs.
They founded Windows 4U because they kept hearing the same story from homeowners: frustration with contractors who didn't communicate, sent in subcontractors who didn't care, and left messes behind. Alex and Leon set out to build the company they always wished existed, one that treats every home like their own.
Today, Windows 4U has completed hundreds of projects across Walnut Creek, Concord, Pleasant Hill, Lafayette, Danville, and the surrounding East Bay, all with the same personal attention to quality that started on day one.
"We don't just install windows. We protect your home, respect your time, and stand behind every single install we do." — Alex & Leon Elbert, FoundersGet a Free Estimate →
When you hire Windows 4U, you're working directly with the owners. Not a dispatcher who's never held a window.
Co-Founder & Operations Manager
Alex is involved in every project from the first estimate through final walkthrough. He manages the crew, oversees scheduling, and makes sure every job meets the standard that Windows 4U is known for across the East Bay.
Co-Founder & Operations Manager
Leon oversees the crews and keeps every project running on time and on standard. With 20+ years of industry experience, he knows exactly what a proper installation looks like and doesn't sign off until it's right.
California Contractor License #1097508. Fully licensed, bonded, and insured on every job. Verifiable on the CSLB website.
We never send subcontractors. Alex and Leon's own crew installs every window and door. The same team, the same standards, every time.
Hundreds of completed window and door installations across the East Bay, single windows to complete home upgrades and new construction.
Consistently rated 5 stars on Yelp and Google by homeowners across Walnut Creek, Concord, Pleasant Hill, and the greater Bay Area.
Every installation comes with a 4-year workmanship warranty, plus the manufacturer's lifetime product warranty. We stand behind everything we install.
Call, SMS, or WhatsApp directly to Alex or Leon. No call centers, no voicemail black holes. Real communication with the owners who are on top of every job.
