Premium installation, locally trusted

Horizon has served Brentwood homeowners since 2014. Our crews live and work in the East Bay — we know the building codes, the architectural styles, and the inspection officials of Contra Costa County firsthand.

Services in Brentwood

Sliding glass door installation — two- and three-panel systems
Multi-slide door systems — Western Window, LaCantina, Fleetwood
French door installation — single, double, in-swing, out-swing
Pocket door systems — soft-close, custom-fabricated
Whole-home window replacement — energy-efficient, custom shapes
Custom & architect-spec fabrication

Neighborhoods we serve in Brentwood

Shadow Lakes, Apple Hill, Brentwood Hills, Rose Garden

Local landmarks near our jobs

Brentwood Vineyards, Streets of Brentwood, Mt. Diablo views

ZIP codes: 94513 • Population served: ~65,000

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Premium sliding door installation in Brentwood, CA

Why Brentwood homeowners choose Horizon

Local Crews

Our technicians live in the East Bay. They know Brentwood's building codes, inspectors, and neighborhood architectural styles.

10-Year Warranty

Every installation in Brentwood is backed by our 10-year labor warranty plus full manufacturer product warranties.

Licensed & Insured

Full California contractor licensing, $2M general liability, workers' comp. License and COI provided with every estimate.

Common projects in Brentwood

Replacement of aging sliding doors in Brentwood ranch homes

Many of Brentwood's mid-century homes have original sliding doors that have lost their seal, scratch when sliding, or no longer lock properly. We replace these with modern energy-efficient systems that drop your heating and cooling costs immediately.

Wall-of-glass multi-slide installations for indoor-outdoor living

Capturing Brentwood's climate and views with a 12–20 foot opening of disappearing glass. Most homes here are excellent candidates — we handle the structural assessment and permit work.

French door upgrades for traditional homes

Brentwood's historic and traditional homes often benefit from upgraded French doors with multi-point locks, weather sealing, and updated hardware while preserving the original character.

Whole-home window replacement

Energy-efficient replacement windows for older Brentwood homes typically pay for themselves in 5–8 years through reduced PG&E bills, especially in homes with original single-pane windows.

Sliding Doors & Window Installation in Brentwood, CA