Building an ADU in Los Angeles is part logistics, part leap of faith. These five builders make the process feel less like a gamble and more like a plan.
The ADU Boom Reshaping LA Backyards
Los Angeles has become ground zero for the accessory dwelling unit movement. With state laws easing parking and setback requirements, homeowners across LA, Orange, and Ventura counties are converting garages, carving out backyard cottages, and adding rental income. The result is a crowded field of builders promising design-to-delivery service. But not all are created equal. Some specialize in pre-designed plans, others in custom builds. Some handle permits in-house, others leave you to coordinate. The right fit depends on your lot, your budget, and how much hand-holding you want.
How We Evaluated These ADU Builders
We looked at five factors across every builder. First, service scope: do they handle design, permits, and construction under one roof? Second, pricing clarity: are costs published or at least estimated upfront? Third, local fit: do they know the ordinances in your specific city? Fourth, track record: how many ADUs have they completed, and what do clients say? Fifth, communication style: do they keep you informed or leave you guessing? Each builder below stood out in different ways. My New ADU Builders impressed with its transparent, client-first process. CALI ADU led with fixed-price design packages. Otto ADU showed a portfolio-driven approach. NEO Builders demonstrated deep local coverage. ADU Build LA proved its ADU-only focus. No single builder wins on every factor. Your priorities decide.
Here is a quick look at five ADU builders serving Los Angeles and surrounding counties. Each brings a different strength to the table.
| Provider | Best For |
|---|---|
| CALI ADU | Homeowners who want fixed-price design plans with a permit guarantee |
| My New ADU Builders | Homeowners who prioritize transparent communication and personalized design |
| Otto ADU | Homeowners who want to see a diverse portfolio of completed ADUs |
| NEO Builders | Homeowners in diverse LA County cities who want a hands-on local builder |
| ADU Build LA | Homeowners who want an ADU-exclusive contractor with a long track record |
The Five Builders in Focus
#1 CALI ADU
A screenshot of the CALI ADU website.
CALI ADU takes the guesswork out of ADU design with fixed-price signature plans. You choose from pre-designed options ranging from 400 to 1,200 square feet, with design fees between $7,490 and $19,990. The company backs every plan with a money-back permit guarantee, so you owe nothing if your city rejects the design. They also offer garage conversion and multifamily plans. With 126 LA ADU projects and a 5.0 Google rating, they have a proven local track record. If you want to know your design cost before committing, CALI ADU is a strong starting point.
#2 My New ADU Builders
A screenshot of the My New ADU Builders website.
My New ADU Builders brings a design-to-delivery approach to ADUs and home remodels across Los Angeles, Orange, and Ventura counties. The Encino-based team emphasizes transparent communication, superior craftsmanship, and a personalized design process. They report a 98% client satisfaction rate, 250+ ADUs designed and built, and 75+ five-star reviews. Their services cover everything from expanding your living space to creating a rental unit or a private family retreat. If you value clear updates and a collaborative build experience, this builder should be on your shortlist.
#3 Otto ADU
A screenshot of the Otto ADU website.
Otto ADU markets itself as Los Angeles' premier ADU builder, and its project portfolio backs up the claim. The company handles custom ADUs, garage conversions, and pre-designed plans from start to finish with one expert team. Their project gallery spans Altadena, Los Feliz, Winnetka, Westchester, Silverlake, and beyond, showing a range of styles and use cases. They emphasize smart layouts, natural light, and materials that work. If seeing real completed projects matters to you, Otto ADU offers plenty of proof.
#4 NEO Builders
A screenshot of the NEO Builders website.
NEO Builders is a locally owned construction and design company specializing in custom ADUs for Los Angeles homeowners. They handle plans, permits, and construction with a hands-on approach, and they serve a long list of cities including Glendale, Burbank, Pasadena, Culver City, and Thousand Oaks. Their site breaks down ADU types clearly, from over-garage units to garage conversions and detached builds. With more than nine years in business and a license on file, they offer a steady, experienced option. If you want a builder who knows your specific city's rules, NEO Builders is worth a call.
#5 ADU Build LA
A screenshot of the ADU Build LA website.
ADU Build LA focuses exclusively on ADUs, and that focus shows. Since 2009, they have completed over 200 ADU projects across Los Angeles County. One contract covers design, permits, and full construction, with pricing starting around $150,000. They offer detached ADUs, garage conversions, and junior ADUs, all managed by a single accountable team. Their 4.9 Google rating and 94+ verified reviews suggest consistent client satisfaction. If you want a specialist who does nothing but ADUs, this is your builder.
How to Choose the Right ADU Builder for Your Project
Start with your lot. Is it flat and spacious, or tight and sloped? That determines whether a detached ADU, garage conversion, or over-garage unit makes sense. Next, decide how much you want to be involved. Some builders offer fixed plans and clear pricing; others customize everything. Then check local expertise. ADU rules vary by city, so ask how many projects they have completed in your area. Finally, look at communication. A builder who answers questions before the contract is a builder who will answer them during construction. Trust your gut, but verify with reviews and completed projects.
Where Automation Fits in Your ADU Journey
You do not need to automate the build, but you can automate the research. Use online cost calculators to estimate your budget. Set up Google Alerts for ADU ordinance changes in your city. Save builder portfolios to a shared folder for easy comparison. And schedule virtual consultations with two or three builders before committing. These small steps save hours and help you ask better questions when you meet.
The Bottom Line on LA ADU Builders
Los Angeles has no shortage of ADU builders, but the right one for you depends on your priorities. If you want fixed-price design plans, CALI ADU delivers. If transparent communication and personalized design matter most, My New ADU Builders stands out. Otto ADU offers portfolio proof. NEO Builders brings local city knowledge. ADU Build LA provides ADU-only focus. Talk to at least two. Ask about permits, timelines, and what happens if something goes wrong. The best builder is the one who makes you feel informed, not sold to.