Home Addition Contractor in Sherman Oaks

As families grow and Sherman Oaks home values climb, adding onto an existing home often makes more
sense than moving. Whether it’s a primary suite, a larger kitchen, or a full second story, Katz Design
& Builders is a licensed design-build firm (California CSLB #1089060) that designs and builds home
additions across Sherman Oaks — engineered, permitted, and blended seamlessly into your home.

Why Sherman Oaks homeowners choose Katz Design & Builders

Additions that look original. We match rooflines, materials, and proportions so
the new space looks like it was always there.
We handle Valley conditions. Flat lots and hillside properties call for different
engineering. We plan for both.
Licensed, insured, accountable. CSLB #1089060, fully insured, fixed price, one
project manager.
Design-build under one roof. Design, budget, and construction from one team.

Our Sherman Oaks home addition services

Primary suites & bedroom additions

Add the private space your family needs, engineered and matched to the home.

Kitchen & living expansions

Enlarge and open the spaces where you cook, gather, and entertain.

Second stories

Add a full second story where the lot and design call for it, blended into the existing home.

Whole-home remodels

When the addition is part of a larger project, we coordinate it all as one build.

What to expect: our process

Consultation & site visit — we assess your home and goals and talk
budget honestly.
Design & fixed proposal — drawings, selections, itemized price and
schedule before construction.
Permits & approvals — handled through the City of Los Angeles.
Build — one project manager, a clean site, updates to completion.