ADU in Lancaster - Plans, Permits & Build, One Fixed Price
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 full design and permitting to garage conversions, new detached builds, junior ADUs, and 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 Lancaster
A look at recent adu projects across Lancaster and surrounding areas.
ADUs Built With Care, Delivered With Speed
There's a difference between an ADU that's thrown up fast and one that's built thoughtfully - and Lancaster homeowners can feel it the moment they walk through the door. We don't treat your project like a production number. Every detail, from the framing to the finish work, reflects the care of a team that takes genuine pride in what they build.
At the same time, we know that speed matters to you. Rental income deferred is money left on the table, and family housing delayed creates real stress. That's why we've engineered our process to move efficiently through permitting, construction, and inspection - without ever sacrificing the craftsmanship that makes your ADU a long-term asset.
Start Your ADU Project
Lancaster's ADU Team - Neighbors Helping Neighbors
We're not a distant corporation parachuting into the Antelope Valley. We're a local team that understands Lancaster's neighborhoods, its building department, and the unique needs of homeowners on this side of the mountains. When you work with us, you're working with people who genuinely care about this community.
That local knowledge translates directly into faster permit approvals, fewer surprises during construction, and a smoother overall experience. We've built relationships with city staff and utility providers that help your project move forward while others wait in line.
Meet the Team
What Homeowners Say
Projects across Lancaster and surrounding communities.
"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."
"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."
"Handled the whole planning process. We went to one hearing and that was it."
"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 every step of the ADU process so Lancaster homeowners experience clear communication, zero surprises, and a finished unit they're proud to own.
Free Consultation
We meet at your property to assess your goals, your lot, and your budget. No pressure - just honest guidance from a team that knows Lancaster zoning inside and out.
Site Evaluation & Feasibility
Our team conducts a thorough site review to confirm setbacks, utility access, soil conditions, and HOA requirements specific to your Lancaster address.
Custom ADU Design
Our designers create a floor plan tailored to your lifestyle and property - whether you're adding a rental unit, a guest suite, or a home for a family member.
Permit Application & City Coordination
We prepare and submit all required documents to the City of Lancaster and coordinate directly with the building department to accelerate approvals.
Site Preparation & Utilities
Once permits are issued, our crew handles grading, foundation prep, and running electrical, plumbing, and sewer connections to your new unit.
Framing & Construction
Our craftsmen frame and build your ADU using quality materials and proven techniques, keeping the work on schedule and your property clean and safe throughout.
Inspections & Quality Checks
We manage every required city inspection and perform our own internal quality walkthroughs so nothing slips through before your final sign-off.
Final Walkthrough & Handover
We walk the finished unit with you room by room, answer every question, and hand over a completed ADU you're ready to move into or rent out immediately.
The Standards We Build Every ADU By
Every ADU we deliver in Lancaster is measured against six core quality benchmarks that protect your investment and your family for decades to come.
Permit Compliance
Every design meets current California ADU law and Lancaster municipal code. We track regulation updates so your project is never derailed by a missed requirement.
Structural Integrity
From foundation to roofline, we build to exceed minimum code - using materials and framing methods designed for the Antelope Valley's climate and soil conditions.
Utility Integration
Electrical panels, plumbing runs, and sewer tie-ins are planned from day one so your ADU functions as a fully independent, code-compliant living space.
Interior Finish Quality
We bring the same level of craftsmanship indoors - smooth drywall, solid cabinetry, and durable flooring that holds up to tenant or family use year after year.
Schedule Reliability
We publish a realistic project timeline before breaking ground and update you proactively if anything shifts - because your time and rental income timeline matter.
Energy Efficiency
ADUs we build meet California Title 24 energy standards with proper insulation, efficient HVAC, and water-conserving fixtures that keep utility bills manageable.
Why Lancaster Builds With Us
We combine local expertise, honest communication, and genuine craftsmanship to make building an ADU in Lancaster a rewarding experience from start to finish.
Fast-Track Permitting
We know Lancaster's permit process inside and out, and we prepare complete, accurate applications that minimize back-and-forth with the city - so your project starts sooner.
Design Built Around You
Your ADU isn't a template - it's a home. We listen to how you plan to use the space and design a unit that fits your property, your family, and your financial goals.
Licensed, Insured & Accountable
We carry full contractor licensing and insurance so your investment is protected throughout the build. We stand behind our work and make things right if anything falls short.
One Team, Full Scope
No subcontractor juggling or finger-pointing. Our integrated team handles design, permits, site prep, construction, and inspections - keeping your project tight and on schedule.
Frequently Asked Questions
Honest answers to the questions Lancaster homeowners ask most before starting their ADU project.
Ready to Add an ADU to Your Lancaster Property?
Let's talk about your goals, your lot, and your timeline - for free. Our team is ready to help you move from idea to approved plans faster than you might expect.
(661) 528-5298Get Your Free ADU Estimate
Tell us a little about your property and what you have in mind, and we'll reach out quickly to schedule a no-obligation consultation.
ADU Service Across the Lancaster Area
We Are the Lancaster 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.