ADU in Rancho Cucamonga - 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.
Call to schedule your free estimate
What Our Customers Are Saying
"Handled the whole planning process. We went to one hearing and that was it."
"Garage conversion finished on the drawings and close to the schedule. They were honest that the sewer connection was the unknown, and it was."
"The rental income has covered the payment since the second month. They were realistic about the numbers rather than optimistic."
"Every allowance was itemised at the start, so the finish selections did not turn into a surprise at the end."
"Detached unit in the back garden. Good design, good build quality, and the cost changes were documented and agreed in advance."
"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."
"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."
Our Simple 3-Step Process
Request Service or Call Us
Call us or send a quick message. Tell us your adu issue and we'll schedule a convenient time.
Inspection & Free Estimate
Our technician arrives on time, inspects the problem, and gives a clear, upfront estimate with no hidden fees.
Fast Repair on the Spot
We fix the issue quickly using high-quality parts and proven techniques - working like new before we leave.
Don't let a broken adu slow you down. Contact Ellery ADU Studio Rancho Cucamonga today and our experts will handle everything - from diagnosis to repair, quickly.
Call (909) 506-1121
Areas We Proudly Serve
Serving Rancho Cucamonga, CA - Our Local Coverage Area
We're based in the Rancho Cucamonga area and know this community well. Use the map below to see our service coverage - if you're nearby, we can almost certainly help.
See the Difference We Make
At Ellery ADU Studio Rancho Cucamonga, we specialize in fast, reliable, and affordable adu services for homeowners and businesses.
About Us
Request Your Free Estimate
Prefer to talk now? Call us directly - we answer fast and dispatch even faster. No obligation, no sales pitch.
Call or Text(909) 506-1121Request A Free Quote
We Are the Rancho Cucamonga 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.