On the border of Orange and LA counties, La Habra mixes decades-old neighborhoods with growing
families who need more space. Converting a garage or adding an ADU is one of the smartest ways to gain
that space — a suite, an office, or rental income — without moving. Katz Design &
Builders is a licensed design-build firm (California CSLB #1089060) that designs and builds garage
conversions and ADUs across La Habra.

Why La Habra homeowners choose Katz Design & Builders

We turn wasted space into living space. An underused garage becomes a legal,
comfortable room — done to code, not just walled off.
We know the permitting. ADU and conversion rules, setbacks, and parking trip up
the wrong builder. We prepare plans and manage approvals through the city.
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 La Habra garage conversion & ADU services

Garage conversions

Turn a garage into a suite, office, gym, or rental with proper insulation, egress, and finishes to
code.

Detached & attached ADUs

Purpose-built accessory dwelling units designed to La Habra’s zoning and setback rules.

Junior ADUs & additions

When a full ADU won’t fit, a junior ADU or targeted addition adds the space and value you need.

Rental-ready builds

Kitchenettes, separate entries, and durable finishes if you plan to rent.

What to expect: our process

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

La Habra ADU & garage conversion — FAQ

Is a garage conversion worth it in La Habra?

For many homeowners, yes — adding legal living space you already own the footprint for is one
of the better returns available, for rental income or your own use.

Do I need permits for an ADU or garage conversion?

Yes. Both require permits and must meet zoning, setback, and building code. We prepare the plans and
manage the full permit process.

How long does an ADU or conversion take?

A garage conversion typically runs a couple of months; a detached ADU longer, depending on scope and
permits. You’ll get a realistic schedule up front.

Planning your project? See our garage conversion cost guide for Los Angeles & Orange County.

As your general contractor in La Habra, Katz Design & Builders manages your entire project — design, permits, and construction — under one roof.