Lake Forest’s master-planned neighborhoods, built largely from the 1970s through the ’90s, are full of
family homes where a garage conversion adds real, usable space — a suite, an office, a gym, or
rental income. Katz Design & Builders is a licensed design-build firm (California CSLB #1089060)
that designs and builds garage conversions and ADUs across Lake Forest.
Why Lake Forest homeowners choose Katz Design & Builders
- We turn a garage into a real room. Insulated, permitted, and finished living
space — not just a walled-off garage. - We work within HOA guidelines. Many Lake Forest communities have design rules. We
plan around them so the project goes smoothly. - 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 Lake Forest garage conversion services
Living-space conversions
Turn a garage into a suite, office, gym, or studio, done to code.
Garage-to-ADU conversions
Convert a garage into a legal, rentable dwelling with a kitchenette, bath, and separate entry.
Detached & attached ADUs
Purpose-built ADUs designed to the city’s zoning and setback rules.
Home offices & suites
Quiet, comfortable dedicated space for work or guests.
What to expect: our process
- Consultation & site visit — we assess your garage and goals and talk
budget honestly. - Design & fixed proposal — drawings, selections, itemized price and
schedule before construction. - Permits & approvals — handled through the City of Lake Forest, with HOA
coordination. - Build — one project manager, a clean site, updates to completion.
Lake Forest garage conversion — FAQ
Is a garage conversion worth it in Lake Forest?
Adding legal living space you already own the footprint for is one of the better returns available
— for rental income or your own use. We’ll tell you honestly what your home supports.
Do I need permits and HOA approval to convert a garage?
Conversions require city permits and must meet code; many Lake Forest communities also have HOA
review. We handle both.
How long does a garage conversion take?
Most run a couple of months 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 Lake Forest, Katz Design & Builders manages your entire project — design, permits, and construction — under one roof.
Nearby areas we serve
Katz Design & Builders also serves nearby communities including Newport Beach, Laguna Woods, Laguna Niguel, Laguna Hills. Explore our garage conversion services or see all the areas we serve.
Get a quote for your Lake Forest conversion
Tell us about your project and we’ll set up a consultation. Licensed CSLB #1089060, serving Lake
Forest and Orange County.
Call (213) 444-7636 or request a consultation online.