ADU in Irvine - Design, Permits and Build Under One Contract
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 initial design and city permitting to garage conversions, new detached builds, junior ADUs, and full site prep - we handle every phase of your ADU project under one 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 Irvine
A look at recent adu projects across Irvine and surrounding areas.
A Local Team That Knows Your Neighborhood
We've been building and converting ADUs throughout Irvine and greater Orange County for years, and that local experience makes a real difference. We know which neighborhoods have alley access for detached ADUs, how Irvine's plan-check process works, and which design details resonate with the community's architectural character.
When you work with us, you're not handing your project to a distant contractor who treats Irvine like just another job. You're partnering with a team that lives and works here - neighbors who care about the quality of every home we touch because it's the same community we come home to.
Meet Our Team
ADUs That Add Real, Lasting Value
An ADU is one of the most meaningful upgrades you can make to your Irvine property - whether you're creating a rental income stream, housing a family member, or simply expanding your living space. Done right, it's an asset that pays dividends for decades.
We approach every project with that long view in mind. Our designs are thoughtful enough to attract quality tenants and durable enough to perform for years with minimal maintenance. We don't cut corners, because your ADU should be worth every dollar you put into it.
See Our Work
What Homeowners Say
Projects across Irvine and surrounding communities.
"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."
"Handled the whole planning process. We went to one hearing and that was it."
"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."
"Every allowance was itemised at the start, so the finish selections did not turn into a surprise at the end."
"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, Made Simple
We've refined our process through hundreds of Irvine ADU projects so that every step feels clear, collaborative, and completely stress-free.
Free Site Consultation
We visit your Irvine property, walk the site together, and listen to your goals - no pressure, just honest conversation about what's possible.
Feasibility & Zoning Review
Our team reviews your lot size, setbacks, and Irvine municipal code to confirm what ADU type and size you can build before any plans are drawn.
Custom Design
Our in-house designers create architectural plans tailored to your property and lifestyle, balancing functionality, aesthetics, and neighborhood character.
City Permitting
We prepare and submit all required documentation to the City of Irvine, managing the permit process and responding to any plan-check comments on your behalf.
Site Preparation & Utilities
Once permits are approved, our crew handles grading, drainage, and utility connections - laying the groundwork for a seamless, code-compliant build.
Construction
Our skilled craftsmen build your ADU with care and precision, using quality materials and keeping you informed through regular progress updates.
Inspections & Sign-Off
We coordinate all city inspections at every required phase, ensuring your ADU meets or exceeds Irvine Building Department standards from foundation to finish.
Final Walkthrough & Handover
We walk the completed unit with you, address any last details, and hand you the keys - along with all warranties, permits, and as-built documentation.
Quality You Can See and Feel
Every ADU we deliver in Irvine is measured against six core quality dimensions that protect your investment and your peace of mind.
Code Compliance
We stay current with California ADU law and Irvine's local ordinances, so your unit is fully permitted and legally habitable from day one.
Thoughtful Design
Our designers balance practical livability with architectural harmony, ensuring your ADU complements your primary home and neighborhood aesthetic.
Structural Integrity
From foundation type to framing method, every structural decision is made with long-term durability and Southern California seismic requirements in mind.
Energy Efficiency
We build to Title 24 energy standards and offer insulation and HVAC options that keep utility costs low and comfort high year-round.
Craftsmanship Detail
Finish work matters - our tradespeople take pride in clean lines, quality fixtures, and interiors that feel polished and purposefully built.
Transparent Communication
You'll never wonder where your project stands - we provide consistent updates, clear timelines, and a dedicated point of contact throughout construction.
Why Irvine Builds With Us
Irvine homeowners choose us because we combine local expertise, genuine craftsmanship, and a relationship-first approach that makes the entire ADU process feel personal.
Deep Local Roots
Our team knows Irvine's zoning codes, plan-check process, and neighborhood character inside and out - experience that saves you time and avoids costly surprises.
End-to-End Service
We handle everything from design and permitting through construction and final sign-off, so you have one trusted partner for the entire journey - not a revolving door of contractors.
Quality Craftsmanship
Every unit we build is treated with the same care we'd give our own homes - because we believe the details matter and lasting quality is never negotiable.
Honest Partnerships
We communicate proactively, price transparently, and never oversell. Our goal is a relationship you'd recommend to your neighbors - and most of our clients do.
Frequently Asked Questions
Honest answers to the questions Irvine homeowners ask us most when they're considering building an ADU.
Let's Build Something Lasting Together
Your Irvine property has more potential than you might realize - and we'd love to help you unlock it. Reach out today for a free, no-obligation site consultation with a friendly member of our local team.
(657) 233-9738Start Your ADU Conversation
Tell us a little about your property and your goals, and one of our Irvine ADU specialists will be in touch within one business day.
ADU Service Across the Irvine Area
We Are the Irvine 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.