ADU in Los Angeles - One Fixed Price, Permits Handled
We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.
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Our ADU Services
From garage conversions and junior ADUs to brand-new detached cottages and full site prep, we handle every phase of your ADU project under one trusted roof.
ADU Design & Permitting
Professional adu design & permitting service. Licensed & insured with a satisfaction guarantee on every job.
ExploreGarage Conversion ADU
Professional garage conversion adu service. Licensed & insured with a satisfaction guarantee on every job.
ExploreNew Detached ADU
Professional new detached adu service. Licensed & insured with a satisfaction guarantee on every job.
ExploreJunior ADU & Interior Conversion
Professional junior adu & interior conversion service. Licensed & insured with a satisfaction guarantee on every job.
ExploreADU Site Prep & Utilities
Professional adu site prep & utilities service. Licensed & insured with a satisfaction guarantee on every job.
ExploreOur Work in Los Angeles
A look at recent adu projects across Los Angeles and surrounding areas.
ADU Building Is All We Do-and We Do It Exceptionally Well
When you've spent years focused exclusively on accessory dwelling units across Los Angeles, you develop an intuition for the work that generalist contractors simply can't match. We've navigated every neighborhood, every soil condition, and every quirk of LA's permit offices-so the hard lessons were learned long before we ever set foot on your property.
That depth of experience shows up in the quality of your finished ADU. It shows in the way our crews anticipate problems before they become change orders, in the way our designers know which layouts work in a 6,000 sq ft lot versus a 4,500 sq ft lot, and in the way our project managers communicate with you like a neighbor, not a ticket number.
Meet Our Team
A Relationship Built on Honesty, Not Just a Transaction
We believe the best ADU projects happen when there's genuine trust between the homeowner and the builder. That's why we invest real time in understanding what you need-whether you're building a rental unit to offset your mortgage, creating a multigenerational home for aging parents, or adding a private studio for yourself.
We're straightforward about costs, honest about timelines, and upfront about challenges. If something changes mid-project, you hear it from us first-with a clear explanation and a solution already in hand. Our repeat clients and referrals are the proof that this approach works.
Read Client Stories
What Homeowners Say
Projects across Los Angeles and surrounding communities.
"Every allowance was itemised at the start, so the finish selections did not turn into a surprise at the end."
"The permit set and the build were one contract with one number. Our neighbours used two firms and spent a year watching them blame each other."
"Garage conversion finished on the drawings and close to the schedule. They were honest that the sewer connection was the unknown, and it was."
"Detached unit in the back garden. Good design, good build quality, and the cost changes were documented and agreed in advance."
"The rental income has covered the payment since the second month. They were realistic about the numbers rather than optimistic."
"They walked us through setbacks and utility capacity before we paid anything, and told us one of our two options was not going to get approved."
Your ADU Journey, Step by Step
We've refined every stage of the ADU process so you always know what's happening, what's next, and who to call.
Discovery Consultation
We sit down with you-on-site or virtually-to understand your goals, budget, and timeline. This conversation shapes everything that follows.
Site Assessment & Feasibility
Our team evaluates your property's zoning, setbacks, utility connections, and soil conditions to confirm what's buildable and flag any constraints early.
ADU Design & Space Planning
Our designers craft floor plans and elevations tailored to your lot and lifestyle, balancing livability, natural light, and neighborhood character.
Permit Application & City Approvals
We prepare and submit a complete permit package to the City of Los Angeles and follow up proactively until your approvals are in hand.
Site Prep & Utility Work
We handle grading, drainage, and all utility connections-gas, water, sewer, and electrical-so the foundation is set for a smooth build.
Construction & Framing
Our own skilled crews frame and build your ADU with careful attention to detail, keeping the site clean and communicating progress every week.
Finishing & Interior Work
From insulation and drywall to flooring, cabinetry, and fixtures, every finish is installed with the same craftsmanship we'd want in our own homes.
Final Inspection & Handoff
We walk through every system with you, coordinate the city's final inspection, and make sure you feel completely confident before we hand over the keys.
Quality You Can See and Feel
Every ADU we build is measured against six pillars of excellence that keep our work consistent, our clients happy, and your investment protected.
Code-Compliant Construction
We build to current California Title 24 energy standards and all LA municipal codes, so your ADU passes inspection the first time and stands the test of time.
Thoughtful Space Design
Smart layouts maximize every square foot-whether it's a 400 sq ft junior ADU or a full 1,200 sq ft detached unit-without sacrificing comfort or flow.
Skilled Trade Craftsmanship
Our in-house carpenters, framers, and finish crews bring years of dedicated ADU experience to every joint, surface, and detail of your project.
Permit & Approval Mastery
Navigating LA's ADU permitting can be complex; our deep familiarity with city processes means fewer delays, fewer surprises, and faster move-in dates.
Reliable Utility Integration
We coordinate all new utility connections-water, sewer, gas, and electrical-with licensed subcontractors and inspectors for safe, lasting infrastructure.
Transparent Communication
You receive regular project updates, honest timelines, and a dedicated point of contact so you're never left wondering about the status of your build.
Why Los Angeles Builds With Us
We combine deep Los Angeles ADU expertise with the warmth and accountability of a family-run business-so your project feels personal from start to finish.
ADU-Only Focus
We don't spread ourselves thin across every trade. Accessory dwelling units are our specialty, and that singular focus means sharper skills, faster permits, and better outcomes for you.
Full-Service, One Team
Design, permitting, site prep, construction, and finishing-all coordinated by one team who knows your project inside and out, eliminating the gaps that multi-contractor jobs create.
LA Permit Expertise
We've processed permits across dozens of LA neighborhoods and jurisdictions, so we know exactly what each office needs and how to keep your approval moving without unnecessary delays.
Craftsmanship With Character
Our crews take pride in clean work, thoughtful details, and a finished product that genuinely adds value-to your property, your lifestyle, and your neighborhood.
Frequently Asked Questions
Straight answers to the questions Los Angeles homeowners ask us most before starting their ADU journey.
Ready to Add a Home to Your Property?
Let's sit down, look at your lot, and talk through what's possible. Your consultation is free, honest, and comes with no pressure-just expert guidance from a team that's done this hundreds of times across Los Angeles.
(424) 551-7706Tell Us About Your ADU Project
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ADU Service Across the Los Angeles Area
We Are the Los Angeles Team for Ellery.
Ellery was founded in 2015, the year California's ADU law changed and the permitting queue became the actual product. It is a design-build studio rather than a contractor: the drawings, the permit set and the build are one contract with one price, because the ADU projects that go wrong are almost always the ones where the designer and the builder can each blame the other.
Same training, same parts, same pricing practice, and the same 365-Day Done Right Promise - delivered by people who live here.
Visit Ellery →Part of the Haven Family.
Haven is a family of home-service brands held to one written standard, and Ellery is the adu company in it. One promise stands behind every trade, in every town.