Why Upland Homeowners Choose Ellery ADU Studio Upland for ADU
Since 2015, Ellery ADU Studio has completed more than 900 accessory dwelling units across California, and the Upland branch carries that same standard into the Inland Empire. We’re led by Nadia Ellery, and every project we take in Upland, Montclair, or Rancho Cucamonga starts with a written, line-item quote and ends with a documented record of what we built. Our reviews come from neighbors who researched us, compared us, and chose us because we put the price on the page before anyone picks up a hammer.
6 Reasons We’re Upland’s Top ADU Company
1. We learned ADU permitting when the rules were still being written
Ellery started in 2015, the same year California’s statewide ADU law changed and cities like Upland were scrambling to adopt local ordinances. We’ve been through every revision since. That means when we pull permits in Upland, we know how the city’s planning department interprets setbacks, height limits, and parking requirements - because we’ve watched those interpretations shift over eleven years. We don’t guess. We know what the plan checker will ask for before they ask.
2. Our reputation is visible where buyers actually look
We don’t hide our reviews behind a cherry-picked testimonial page. Our customers in Ontario, Chino, and Chino Hills leave detailed feedback on the platforms where comparison shoppers read it - including the three-star reviews that tell you how we handle a problem when one shows up. That’s the feedback we pay attention to, because it shapes how we train our crews and refine our process.
3. Every pro on your job is required to hold the license and insurance California requires
Under the Haven Standard, Clause 3, every crew member working under our name in Upland must carry the state license and insurance their trade requires, and we keep those license numbers on file for every job. We’re not guessing at compliance. We verify it before the crew arrives, and we document it in your project file. That’s what “Verified crews” means in practice - not a slogan, a checklist.
4. We spec and price Abodu, Cover, and James Hardie systems from experience
We’ve installed Abodu and Cover units in the Inland Empire, and we’ve sheathed ADUs with James Hardie siding through enough Fontana summers to know how it performs when the Santa Ana winds hit. We don’t recommend products we haven’t built with. When we spec a material for your ADU in Corona or Diamond Bar, we’re citing actual performance data from jobs we’ve completed - not a manufacturer’s brochure.
5. Your quote is a fixed-price contract, not an estimate that drifts
Haven Standard Clause 1: Have it in writing. When we quote your ADU in Eastvale or Anaheim, you get a line-item, fixed-price contract before we start. Not a ballpark. Not a “typical range.” The price we write is the price you pay, unless you change the scope yourself. No change orders for conditions we should have seen. No “while we’re in here” upsells. We’ve honored that standard on every one of the 900-plus ADUs we’ve built since 2015.
6. We leave evidence, not promises
Haven Standard Clause 4: Evidence on every job. Our crews photograph and record readings at key milestones - foundation pour, rough inspection, final walkthrough - and you get that documentation in your project portal. If a question comes up two years later about what we found under the slab in Pomona, we have the photo. If there’s a warranty claim in Chino Hills, we have the record of what we installed and when. Documentation is how we make guarantees real.
Our Promise to You
If you’re not satisfied with any phase of our work, we don’t move to the next phase until it’s right. That’s not a refund policy - it’s a stop-work policy, and it’s written into every contract we sign in Upland. Our pricing is fixed and line-itemed before construction starts; the only way the price changes is if you change the scope. We answer calls Monday through Friday, 7 AM to 7 PM, and Sunday 7 AM to 7 PM. A live coordinator connects you with the local team, and we text when we’re on the way. Every promise is backed by the Haven Standard, and every Haven Standard clause is numbered and referenced in your contract so you know exactly what you’re holding us to.
Frequently Asked Questions
We’re a design-build studio, not a designer who hands off to a contractor you’ll never meet. Since 2015, we’ve kept the drawings, the permit set, and the construction under one contract with one fixed price, because the ADUs that go wrong are almost always the ones where the designer and builder blame each other. In Upland specifically, we know how the city interprets state ADU law - setback variances, utility separations, the details that stall permits. Call (840) 212-3065 to schedule your free estimate and we’ll show you the difference.
We stop work and fix it before proceeding. That’s written into every contract under Haven Standard Clause 1, and it’s how we’ve operated since 2015. There’s no arbitration clause, no runaround. If a phase doesn’t meet the spec we agreed to in writing, we don’t invoice for the next phase until it does. Call (840) 212-3065 and ask Nadia Ellery directly how we’ve handled past concerns - estimates are free.
No. Every ADU estimate in Upland, Montclair, Rancho Cucamonga, and our full service area is free, written, and line-itemed. We don’t do verbal ballparks that shift later. You get a fixed-price contract you can compare against any other builder, with no obligation to hire us. Call (840) 212-3065 to schedule yours.
Yes. Every pro working under our name in Upland is required to hold the California state license and insurance their trade requires, verified before they step on your property. We keep those license numbers in your project file under Haven Standard Clause 3. We don’t send unlicensed labor or hope the subcontractor is current. Call (840) 212-3065 and we’ll confirm the specific licenses that apply to your project type.
We schedule estimates during our operating hours: Monday through Friday 7 AM to 7 PM, and Sunday 7 AM to 7 PM. We’re closed Saturday. When you call (840) 212-3065, a live coordinator will find the next available appointment that works for your schedule. We don’t promise same-day construction starts - ADUs are planned projects, not emergencies - and we don’t do urgency theater. We do show up in the window we name, with a text when we’re on the way. That’s Haven Standard Clause 2: Arrive on schedule.
Written by Nadia Ellery, Owner at Ellery ADU Studio Upland, serving Upland, Montclair, Rancho Cucamonga, Ontario, Pomona, Chino, Fontana, Eastvale, Diamond Bar, Chino Hills, Corona, and Anaheim since 2015.