What Rancho Cucamonga Homeowners Say About Ellery ADU Studio Rancho Cucamonga
Reviews in the ADU world carry extra weight because the project takes months, not hours. A homeowner can’t fake knowing whether the slab passed inspection, or if the electrical subpanel was actually upgraded to 200-amp service. We’ve worked in Rancho Cucamonga since 2015, and the feedback we value most mentions specifics: the permit set, the photo record, the written price that held. That’s how we know we earned it.
Recent Reviews
“We’d already paid another firm for garage conversion drawings when we found out they never checked the Rancho Cucamonga setback for our Alta Loma lot. Nadia’s team ran the parcel map, found we needed a 4-foot variance, and redid the full permit set. The written price came in at $8,200 for design and permitting, and that was the final number. We closed escrow on the refi 11 days after final inspection.”
Kevin F., Alta Loma
“Our Junior ADU off Haven Avenue started with a soil test that came back expansive clay. Most builders we’d talked to either ignored it or wanted to change-order us later. Ellery priced the engineered pier foundation into the original written scope, Haven Standard Clause 1. The photo record showed every pier depth. My mother moved in last March.”
Carrie P., Rancho Cucamonga
“I’m a retired civil engineer, so I asked hard questions about the Abodu unit they specified for our Etiwanda backyard. Nadia walked me through the crane access plan, the utility lateral from the main house, and why the city required a fire separation detail that Abodu’s standard set didn’t include. She had the revision back in 72 hours. One contract, one price, no finger-pointing.”
Steven T., Etiwanda
“The first company gave us a verbal ‘around 120’ for our garage conversion and then handed us a $167,000 change order after demo. Ellery’s Free Second Opinion saved us. Nadia itemized the real costs: the existing slab was 3.5 inches, so we needed a new 4-inch pour with rebar. That was $14,800, in writing, before anyone touched the garage. Final invoice matched the quote to the dollar.”
Ruben H., Rancho Cucamonga
“We live in the foothills below the San Gabriel front range, and the access driveway is narrow. Nadia’s crew coordinated a Tuff Shed modular unit in three pieces, craned over the neighbor’s fence line with a 90-ton setup. The photo record from that day is wild, and it’s in our project folder. City of Rancho Cucamonga signed off on the final October 14th.”
Kevin F., North Rancho Cucamonga
“My wife and I are both attorneys. We read contracts. The Haven Standard Clause 5, No Surprises, is the only one we’ve seen that actually defines ‘scope creep’ and prohibits it. Our Junior ADU interior conversion stayed at the written $34,500 through drywall, paint, and the final electrical sign-off. Nadia even flagged that our existing HVAC was undersized for the added square footage, priced the mini-split upgrade separately, and let us decline without pressure.”
Steven T., Rancho Cucamonga
Why Customers Trust Us
The pattern in these reviews isn’t luck. It’s the Haven Standard, which Nadia Ellery applies to every project in Rancho Cucamonga and the 14 surrounding cities we serve.
Written price before work starts. Haven Standard Clause 1 means the number you sign is the number you pay. Not “starting at,” not “estimated range.” Kevin F. and Ruben H. both came to us after verbal quotes ballooned elsewhere. The written quote exists so you can show it to your lender, your CPA, or your skeptical spouse.
Documented photo record on every visit. Our crews photograph slab conditions, framing inspections, electrical rough-ins, and final walkthroughs. You don’t get a summary of how it felt. You get timestamped evidence of what was found and what was done. Carrie P.’s pier foundation, Steven T.’s crane day, Ruben H.’s rebar grid, all of it is in the folder.
365-Day Done Right Promise. If the finished ADU doesn’t match the permitted drawings, we make it right, in writing, before your project starts. Not a handshake. A clause. This matters in Rancho Cucamonga, where the city checks final built conditions against approved plans at certificate of occupancy.
One contract, no gaps. Design, permitting, site prep, utilities, and build under a single agreement. When the drywall cracks or the subpanel hums, there’s no designer blaming the builder or the builder blaming the drafter. One call to (909) 506-1121 reaches a live person, 24/7, who can pull your file and answer the question.
Free Second Opinion. If you have a written estimate in hand from another firm, we’ll review it item by item. No charge, no obligation. We’ve caught $40,000 in missing utility trenching, unpermitted setback violations, and slab specifications that don’t meet Rancho Cucamonga’s geotechnical requirements for expansive soils.
900 ADUs since 2015. Every one with a written price, a photo record, and a documented outcome. Call (909) 506-1121 to schedule your free estimate, or bring us your existing quote for a second look.
Written by Nadia Ellery, Owner at Ellery ADU Studio Rancho Cucamonga, serving Rancho Cucamonga since 2015.