Licensed ADU builders in Southern California

Build your ADU with one team, from permits to keys

Detached and attached units, garage and interior conversions, and junior ADUs across Southern California. Licensed, in-house crews. No subcontracting, no hard sell, just an honest plan for your property.

License #1061538In-house crewsFinancing availableFree consultation
No obligationFree consultationLicensed & insured
Why build an ADU

Your backyard has more potential than you think

An accessory dwelling unit is one of the smartest investments a Southern California homeowner can make. Here's what a properly permitted ADU can do for your property.

Rental income

A legal, independent living space you can rent long term. Many of our clients build ADUs specifically to add a steady monthly income stream to their property.

Room for family

A private space for aging parents, adult kids or long-term guests. Everyone stays close without giving up independence, comfort or privacy.

Property value

Added square footage and a second livable unit raise what your property is worth. An ADU keeps paying you back, whether you rent it, use it or sell.

How it works

One team handles everything

1

Free site walk

We visit your property, listen to your goals and give you an honest, itemized estimate. No obligation.

2

Design & engineering

Our in-house team draws the plans and engineers the unit to fit your lot, your budget and city requirements.

3

Permits

We handle all the city paperwork and approvals ourselves, so you never have to chase a permit office.

4

Build & keys

Our own licensed crews build your ADU start to finish, then hand you the keys after the final walkthrough.

Why homeowners choose us

A builder you can actually rely on

Forty percent of our business comes from repeat and referred customers who already know our work can be trusted.

One-stop shop

Planning, design, engineering, permits and construction, all under one roof. You deal with one team the whole way through.

Never subcontracted

Our own trained crews handle your project from the first inspection to the final walkthrough. We never subcontract a job we can do ourselves.

Licensed & insured

B-General Building Contractor's license #1061538, so everything is good to go before a single shovel hits the ground.

Financing available

Flexible financing on every project, from full detached builds to garage conversions. Ask about your options at the consultation.

Reviews

Our work speaks for itself

"I would recommend Reliance to anyone looking to upgrade their home. Everything went exactly how it was explained from beginning to end, and on top of that, they were so clean and fast that we barely knew they were here."
A+
Verified customerAngie's List review
"We ultimately chose them because they were the most friendly, honest, and knowledgeable. Everyone arrived on time and they did a very thorough job. They had a great eye for detail. Our house has never looked better!"
A+
Verified customerAngie's List review
"Couldn't be happier with the professionalism of this company. I've had a few things done in the past with other contractors but it was always a hassle. We are extremely satisfied."
Y
Verified customerYelp review
Service areas

Proudly building across Southern California

Based in Maywood, we serve homeowners throughout Los Angeles County and beyond. Not on the list? Ask us, we don't mind a road trip.

MaywoodLos AngelesAltadenaCovinaPasadenaLong BeachOntarioSurrounding areas
Common questions

ADU questions, answered

It depends on size, site conditions and finishes, since every property is different. That's why we give you an honest, itemized estimate at your free consultation, with no obligation. Financing is available to spread out the cost.

Yes. We handle the entire process in-house, including planning, design, engineering, permits and construction, so you deal with one team the whole way through instead of chasing paperwork.

A properly permitted ADU is designed to be a legal, independent living space, and many homeowners build them specifically for rental income. We'll walk you through what's possible on your lot at the consultation.

No. We never subcontract a job we can do ourselves. Our own trained crews handle your project from the first inspection to the final walkthrough.

Yes, every consultation is completely free. We'll walk your property, talk through your goals and give you an honest estimate with no hard sell and no obligation.

We're based in Maywood and serve homeowners across Southern California, including Los Angeles, Altadena, Covina, Pasadena, Long Beach, Ontario and surrounding communities.

Let's build your ADU

Get your free consultation today. We'll walk your property, listen to your goals and put together an honest plan that fits your budget. Prefer to talk it through? Call us at (323) 792-1217.

Licensed home builders serving Southern California. ADUs, additions and full-service remodeling, built from the inside out.

B-General contractor license #1061538

Contact

Mon - Fri8:00 am - 6:00 pm

Sat - Sunby appointment

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