ADU & Garage Conversion Contractor · Los Angeles
Turn Your Garage or Backyard Into Real Living Space
YBL designs, permits, and builds ADUs and garage conversions across Los Angeles — one team from free 3D design to final walkthrough, with no surprise change orders.
- ✓ Free initial 3D design
- ✓ Plans & permits handled
- ✓ Licensed · Bonded · Insured
ADUs & Garage Conversions in Los Angeles
The Smartest Way to Add Space to Your Property
An ADU — an accessory dwelling unit — is one of the best investments a Los Angeles homeowner can make. Whether you convert an underused garage or build a brand-new unit in the backyard, you add permitted square footage that can house family, generate rental income, or become the home office or guest suite you’ve always wanted.
YBL Design & Build handles the entire project under one roof: the design, the architectural and structural drawings, the city permits, and the construction. You don’t hire a separate architect, a separate permit expediter, and a separate crew — you work with one organized team that’s responsible for the whole outcome.
And it all starts with a free initial 3D design, so you can see exactly what your ADU will look like before you commit to anything.
Start With a Free 3D Design →
ADU interior · Monrovia
Two Ways to Build
Garage Conversion or New Build ADU?
Both add legal living space and long-term value. The right choice depends on your lot, your budget, and your goals — and we’ll help you decide during your free design consultation.
Garage Conversion
Convert the Garage You Already Have
Your garage is probably the most underused space on your property. We transform it into a fully legal, permitted living unit — using the existing structure to keep costs down and the timeline short.
- Faster and more affordable than building from scratch
- Uses your existing foundation, walls, and roofline
- Great for rental income, family, or a private office
- Full kitchen, bathroom, and separate entrance
New Build ADU
Build a Brand-New Unit From the Ground Up
When you want full control over size, layout, and placement, a detached new build ADU is the answer. We design and construct a complete, independent home anywhere your lot allows — including above-garage units.
- Custom floor plan designed around your lot and needs
- Detached or above-garage configurations
- Maximum square footage and rental value
- New foundation, utilities, and high-end finishes
Why Build an ADU
One Project, Several Ways to Win
In a city like Los Angeles, an ADU is rarely just an extra room — it’s flexible space that pays you back.
Rental Income
A permitted ADU can be rented long-term, turning unused backyard or garage space into steady monthly income that helps offset your mortgage.
Added Property Value
Permitted, code-built square footage is documented value. An ADU makes your property more valuable and more attractive to future buyers.
Room for Family
Aging parents, adult children, or live-in help — an ADU gives loved ones a private, independent space while keeping everyone close.
Home Office or Studio
A quiet, separate workspace steps from your back door — ideal for working from home, a creative studio, or a private guest suite.
Faster Than You’d Expect
A garage conversion can be finished in as little as 3–5 months after permits. We plan the full schedule upfront so the build stays on track.
No Surprise Change Orders
Our goal is to minimize surprise change orders through detailed planning before construction begins. Any owner-requested changes or unforeseen conditions are reviewed and approved before moving forward.
The YBL Process
From First Sketch to Move-In Day
Your ADU stays with one team the whole way through — no handoffs, no finger-pointing, no chasing subcontractors.
Free 3D Design
We meet at your property, talk through your goals, and produce a free initial 3D design so you can see your ADU before committing a dollar to construction.
Plans & Permits
We prepare all architectural and structural drawings and manage the full City of Los Angeles permitting process — submittals, corrections, and approvals.
Construction
Our licensed crew builds to the approved plan. You receive a weekly project calendar, so you always know what’s happening on your property and when.
Final Walkthrough
We pass final inspection, walk every detail together, and hand you the keys to a finished, permitted, move-in-ready ADU.
Why YBL for Your ADU
A Specialist, Not a Generalist
ADUs and garage conversions come with their own rules — setback requirements, utility connections, fire separation, parking, and city-specific permitting. The wrong contractor learns these on your dime.
YBL builds ADUs across Los Angeles every year. We know how to design a unit that gets approved, how to keep the budget honest, and how to keep your project moving when the city slows down.
Get a Free Estimate →Free Initial 3D Design
Before you commit to construction, you’ll see exactly what your ADU will look like — layout, finishes, and placement on your lot. Confident decisions, not guesses.
Design, Permits & Construction Under One Team
No separate architect. No permit expediter to manage. No coordination gaps between trades. One phone number and one team responsible for the entire ADU, start to finish.
Weekly Project Calendars
Every ADU client gets a weekly calendar showing exactly what’s being done and when — so a months-long build never feels like a black box.
Recent ADU Projects
ADUs & Garage Conversions We’ve Built
A selection of accessory dwelling units, garage conversions, and above-garage ADUs completed for homeowners across Los Angeles.
ADU Cost in Los Angeles
What Does an ADU Actually Cost?
Every project is different, but homeowners deserve a straight answer instead of a vague “it depends.” Here are realistic Los Angeles ranges to help you plan — your exact number comes from a free consultation and 3D design.
Whatever the scope, the price you approve is fixed in detail before we break ground. No surprise change orders halfway through.
Get Your Detailed Estimate →Ranges are estimates for planning only and vary with size, site conditions, and finishes.
Client Reviews
What ADU Clients Say
★★★★★ 5-Star Rated on Google
“From the first meeting to the final walkthrough, YBL was organized and completely transparent. The weekly project updates kept us informed every step of the way. Our ADU came out exactly as the 3D design showed — no surprises, no extra charges.”
Michael R.
ADU Garage Conversion · West Los Angeles
“We turned our old garage into a rental unit and couldn’t be happier. YBL handled the permits, the design, everything. The 3D design made it easy to make decisions before construction, and the build stayed right on schedule.”
Daniel K.
Garage Conversion ADU · Mid-City
“YBL built a new ADU in our backyard for my mother. They walked us through the whole city process so we never had to deal with permits ourselves. The quality is excellent and it came in exactly on budget.”
Sandra M.
New Build ADU · Culver City
ADU Contractor Serving Greater Los Angeles
We design and build ADUs and garage conversions for homeowners throughout Los Angeles County. If you own a home in LA, we likely build in your neighborhood.
Not sure if we serve your area? Give us a call — we’re happy to confirm.
ADU & Garage Conversion FAQs
Common Questions
The questions Los Angeles homeowners ask us most about building an ADU.
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In Los Angeles, a garage conversion ADU typically runs from about $130,000 to $180,000, depending on the size of the garage, the condition of the existing structure, and the level of finishes. New build ADUs cost more because you’re building from the foundation up. We give you a detailed, fixed estimate after a free consultation and 3D design — so the number you approve is the number you pay.
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A garage conversion turns your existing garage into legal, permitted living space using the structure that’s already there — it’s usually faster and more affordable. A new build ADU is a brand-new, detached unit built from the ground up anywhere on your lot, which gives you full control over size, layout, and placement. YBL designs, permits, and builds both.
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Yes. A legal ADU requires approved plans and city permits covering structural, electrical, plumbing, and energy requirements. YBL prepares all architectural and structural drawings, submits them to the City of Los Angeles or your local building department, and manages inspections through the entire build — so you never have to deal with the permit process yourself.
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A garage conversion typically takes 3–5 months from permit approval to completion. A new build or above-garage ADU generally takes 5–9 months. City permitting timelines vary by department. We provide a weekly project calendar from day one so you always know exactly what’s happening and when.
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Yes. A permitted ADU can legally be rented as a long-term rental, providing ongoing income, or used for family, a home office, or a guest suite. Because it’s permitted and built to code, it also adds documented value to your property. We design every ADU to be fully legal and rentable.
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Yes. YBL Design & Build is a California-licensed general contractor (License #1152391), fully bonded and insured, specializing in residential ADUs, garage conversions, and additions throughout Los Angeles County.
Still have questions about your ADU? We’re happy to talk it through with no obligation.
Related guides: How to build an ADU in Los Angeles · Garage conversion in Los Angeles · ADU permits in Orange County · ADU cost in Orange County
Thank you — we’ve got it.
A member of the YBL team will reach out within one business day to schedule your free consultation and 3D design.
Need us sooner? Call (323) 493-5156.
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