Fifty combined years across three generations of the same family team.
Window Design Group is Southern California’s authorized installer of premium replacement windows, doors, shutters, and shades. Family-owned across three generations. Factory-trained crews — never subcontracted.
What We Install
Replacement windows. Exterior doors. Plantation shutters. Custom shades.
Milgard and AMI replacement windows in every configuration — Tuscany Series, Style Line, Trinsic, Ultra fiberglass, Aluminum. La Cantina folding doors, Windsor custom entries, Milgard and AMI patio sliders. Norman USA plantation shutters with reinforced engineered stiles, mortise-and-tenon joinery, and InvisibleTilt patented systems. Norman Smart Drape motorized shades, Horizons woven wood, Roman shades.
We measure every opening. We order direct from our manufacturers. Our family crew installs every product. We come back six months later to make sure everything still works perfectly.
Our Story
A family business that earned its way into your home.
Three generations of the same family. Fifty combined years installing premium windows, doors, shutters and shades across Southern California. We started small — a single workshop, one truck, hand-built reputation across the Conejo Valley.
We grew the way family businesses grow: one referral at a time. Same neighbors recommending us to neighbors. Same install crews showing up year after year. Same family member answering the consultation call as the one who measures your windows two weeks later.
Today the third generation is in the business. The crew is still in-house. The promise is still: we install what we recommend, we stand behind everything we touch, and we are still here in five years to honor the warranty.
Family-owned workshop
Our own workshop preps every install. We order direct from Milgard, Norman USA, La Cantina, Windsor, and AMI — no middlemen, no markup tier between you and the manufacturer.
In-house install crew
Three generations of family installers. Factory-trained on every product we carry. Never subcontracted. Same names, same faces, same standards — install number one to install number ten thousand.
We come back
Six months after install we come back. We check every seal, every hinge, every lock. Anything not perfect, we fix. Our lifetime workmanship warranty covers everything we touched.
Authorized installer of Milgard, AMI, Norman USA, La Cantina, and Windsor. CSLB Licensed #993370, Bonded, and Insured. Three generations of in-house family installers serving Los Angeles, Ventura, and Orange Counties.