How Ellery ADU Studio Rancho Cucamonga Was Born in Rancho Cucamonga
The call came in late on a Thursday in 2015, the same year California’s ADU law changed and the permitting queue became the actual product. A homeowner in Rancho Cucamonga had hired a designer for plans, then a separate contractor for the build. The foundation was already poured when the city rejected the permit set. Neither party would take the call. The homeowner was out sixty thousand dollars and had a slab of concrete that legally could never become walls.
We were working as a permit expeditor then, watching these fractures happen weekly. The designer blamed the builder for deviating from the drawings. The builder blamed the designer for dimensions that didn’t meet setback codes. The homeowner paid for both and received neither. That Thursday evening, standing in that Rancho Cucamonga backyard looking at a foundation that would need to be jackhammered out, we made a decision. Ellery ADU Studio would come to this city as a design-build studio, not a contractor. One contract, one price, one party responsible for every stage from the first sketch to the final inspection. The ADU projects that go wrong are almost always the ones where the designer and the builder can each blame the other. In Rancho Cucamonga, we would not let that happen.
Nadia Ellery’s Personal Connection to the ADU Trade
I got into this work sideways, through the paperwork. Before I ever walked a job site in steel-toe boots, I sat in the San Bernardino County permit office with a stack of rejected plans, learning why good drawings fail. The smell of that office, industrial carpet and toner and the particular anxiety of people who have been waiting three hours for a fifteen-minute review, it still comes back to me. I was twenty-six, had a degree I wasn’t using, and had taken a job as a permit runner because it paid weekly and I could walk to the office from my apartment in Upland.
The tradesman who trained me was a retired carpenter who worked the counter part-time. He would slide my rejected set back across the laminate and circle the error with a red pen, never speaking, just waiting for me to see it. The header size was wrong for the span. The egress window was two inches short. The gas line drawing didn’t match the site plan. I started staying late, unfolding sets at the big table in the empty lobby, learning to read the language of construction before I ever swung a hammer. That was over ten years ago now, and the feeling hasn’t changed: the satisfaction of finding the error before it becomes a change order, before it becomes a delay, before it becomes a homeowner crying in their kitchen because the project they saved for is now six months behind.
If I weren’t doing this, I would probably still be in some version of that permit office, helping people navigate the system. The work means something personal because an ADU is never just square footage. It’s a mother moving in so she doesn’t have to sell the house she raised her children in. It’s a rental income that makes the mortgage possible after a layoff. It’s a grown kid who can’t afford Los Angeles rents but can afford to live in the backyard in Rancho Cucamonga. I have seen every version. They all matter. What gets me out of bed is the knowledge that somewhere today, a homeowner is about to sign a contract that either protects them or exposes them, and our team is the one that writes it the right way.
Meet Nadia Ellery - The Person Behind Every Job
Nadia Ellery is the Owner and Founder of Ellery ADU Studio Rancho Cucamonga. She holds state-licensed contractor credentials and has spent over ten years in the Inland Empire permit and construction environment, beginning as a permit runner and advancing through project management before opening this independently owned and operated branch of Ellery ADU Studio in 2015.
What separates Nadia from a corporate franchise technician is simple: she still reviews every permit set before it leaves our office, and she still walks the final inspection on jobs over a certain complexity. Her hobby is architectural salvage, weekends spent pulling hardware from demolished Craftsman homes in Claremont and Ontario, learning the construction methods of the past to better understand the tolerances of the present. She believes that an ADU should look like it belongs on the property, not like a shipping container that landed in the wrong yard.
Your project will have her direct attention from the first consultation through the final walkthrough. That is not a marketing promise. It is how we work.
Before
AfterOur Promise to Rancho Cucamonga Homeowners
Our values are organized under the Haven Standard, five clauses that govern every job we take. We reference them by name because they are specific, not decorative.
Clause 1: Have it in writing. Every ADU job is quoted in writing before it starts. Flat price, written scope, written warranty. We learned this the hard way in our first year, when a homeowner in Fontana asked us to add a skylight mid-project and we gave a verbal number that we later had to eat when the city required unexpected structural reinforcement. Now the contract is the contract. No door upsell, no scope creep, no “while we’re in here.”
Clause 2: Arrive on schedule. A real window, a named technician, a text when they are on the way. We once lost a referral from a Montclair homeowner because our crew arrived twenty minutes outside the window and she had left for a doctor’s appointment. That failure sits in our internal log. We have not repeated it.
Clause 3: Verified crews. Every professional working under our name is required to hold the license and insurance their state requires. We collect and verify these documents quarterly.
Clause 4: Evidence on every job. Photos and readings of what we actually found. When we open a wall in a Rancho Cucamonga home built in the 1980s and find asbestos wrap on the ducts, we document it, we show the homeowner, and we adjust the scope in writing before proceeding.
Clause 5: No surprises. This is the umbrella. If we find something unexpected, we stop and we tell you. We do not press forward and invoice later.
Our Credentials
State-licensed contractor. We hold the license required by California for the work we perform. We do not display the number here because credentials should be verified directly with the state board, not taken from a website.
Insured and bonded. Our coverage meets or exceeds the requirements for residential construction in San Bernardino County. We carry general liability and workers compensation, and we name homeowners as additional insured on request.
Years of local experience. Our team has worked in the Inland Empire permit environment since before the 2017 state ADU laws accelerated the market. We know the Rancho Cucamonga planning staff by name, we know which plans examiners prefer digital submission versus paper, and we know the specific fire department access requirements that differ between Rancho Cucamonga and neighboring Upland.
Strong local reputation. We are not the largest ADU builder in the Inland Empire, and we do not aim to be. Our growth has come from referrals and from homeowners who read our three-star reviews as carefully as our five-star reviews.
These credentials matter because an ADU is a six-figure project that takes eight to fourteen months from first sketch to certificate of occupancy. You are not hiring someone to install a faucet. You are entering a year-long relationship with a team that will walk through your property, open your walls, and handle the documentation that determines whether your mother can legally move into the unit you built for her. The license proves we have met the state’s minimum standard of competence. The insurance protects your property if something goes wrong. The local experience means we have already made the mistakes you don’t want to pay for, on someone else’s job, years ago.
Rooted in Rancho Cucamonga
This branch operates from Rancho Cucamonga, and our service area extends through Upland, Fontana, Ontario, Montclair, Claremont, Glen Avon, Mira Loma, Rialto, Eastvale, Chino, and La Verne. We have pulled permits in each of these cities and understand the specific variations: Ontario’s utility connection fees, Fontana’s parking replacement requirements, Claremont’s design review board process for visible second-story units.
On weekends, you might find Nadia at the Rancho Cucamonga Farmers Market on Haven Avenue, or walking the Pacific Electric Trail with her dog. The local business is our license, our trucks, our neighbors. What Ellery ADU Studio contributes is the standard we agree to work to, the documentation system that proves it, and the buying power that keeps our prices honest. We do not pretend to be from anywhere else. Rancho Cucamonga is where we are, and where we work.
Written by Nadia Ellery, Owner at Ellery ADU Studio Rancho Cucamonga, serving Rancho Cucamonga and the Inland Empire since 2015.