ADU & Garage Conversions in Norwalk, CA
Free Estimates
By phone, or in person
Permits Handled
Pulled by us, inspections passed
Since 1953
Family trades, same owner as One Hour Plumbing
Residential & Commercial
Homes, ADUs, buildouts
Discounts
Cash, senior & military
Your garage is sitting on rent money. We turn garages and backyards into legal, permitted ADUs — design, permits, and construction handled by one contractor.
Sound familiar?
Call about this if…
- Your garage stores boxes, not cars, and the lot could be earning rent
- A parent or adult kid needs their own space on your property
- You've seen ADU rents in your neighborhood and done the math
- A previous owner converted the garage without permits and you need it legal
- You want a second unit but don't know what the city will allow on your lot
Plenty of homeowners have heard the ADU horror story: the unpermitted conversion the city makes you tear out, or the builder who quotes $90K and bills $160K. We do it the boring way. Real plans, real permits, a real number before we start, and an inspection card that gets signed at every stage.
Scope
What's included
- Garage-to-ADU conversions (attached and detached)
- New detached backyard ADUs
- Junior ADUs (JADUs) inside the existing home
- Architectural plans and city plan-check submission
- All permits pulled by us, not you
- Foundation, framing, and roofing
- Full electrical, plumbing, and HVAC — one contractor, no subs pointing fingers
- Kitchens and bathrooms built to rental standard
- Separate utility metering where the city allows it
- Final inspection and certificate of occupancy
Process & permits
How Mickey handles it
Call and describe the garage or yard. Mickey tells you what your lot likely allows and a realistic range.
He comes out, measures, checks setbacks and utilities, and gives you a real number.
Plans and engineering get drawn to the city's ADU checklist and submitted for plan check.
One crew runs foundation, framing, electrical, plumbing, HVAC, and finishes in sequence.
Every inspection gets passed, the certificate of occupancy gets signed, and you have a legal unit.
California ADU law now requires cities to approve compliant ADU plans within 60 days — we design to the checklist so plan check doesn't drag.
Most garage conversions run 3–5 months from permit approval; new detached ADUs run longer. We give you the timeline in writing before contract.
You'll get a fixed scope and a real number up front. Changes only happen when you ask for them — in writing, priced before the work.
Pricing
Straight prices, no bait
Free estimates, by phone or in person. No lowball bid that doubles through change orders. The number in the contract is the number we build to, and nothing changes without your signature and a price first. Cash, senior, and military discounts.
From the owner of One Hour Plumbing Service, a name built in southeast LA County on straight quotes and no upselling since 1953.
People also call about
ADUs across LA County & Orange County
Based in Norwalk. Same crew, same prices, in every city below. Don't see yours? Call and ask.
Los Angeles County
Straight Answers
Common questions
How much does a garage conversion ADU cost in Los Angeles?
Most garage conversions land in the $100K–$180K range depending on size, utilities, and finish level. New detached ADUs run higher. Call for a free phone estimate — we'll give you a realistic range for your property in one conversation, not after three sales visits.
Do I need a permit to convert my garage to an ADU?
Yes — always. An unpermitted conversion can't be legally rented, kills value at resale, and can trigger code enforcement. We pull every permit and pass every inspection. That's the whole point of hiring a contractor who pulls permits.
How long does an ADU take to build?
Plan on 1–2 months for design and plan check, then 3–5 months of construction for a typical garage conversion. We put the schedule in the contract and we don't disappear mid-project.
Can I rent out my ADU?
Yes. A permitted ADU is a legal rental unit in California. In most of LA County a one-bedroom ADU rents for $1,800–$2,500 a month — which is why the garage conversion pays for itself faster than almost any other project we build.
Do you handle the design or do I need my own architect?
We handle it. Design-build means plans, engineering, permits, and construction come from one accountable contractor. One contract, one number to call.
Ready to build? Call or text now.
Mon–Sat 7am–6pm · Free estimates · Cash, senior & military discounts