Why Chino Homeowners Choose Ellery ADU Studio Chino for ADU
Since 2015, Ellery ADU Studio has designed, permitted, and built more than 900 ADUs across California with one rule: the price is in writing before anyone picks up a tool. Our Chino branch, led by Nadia Ellery, brings that same standard to the Inland Empire. Homeowners in Chino, Chino Hills, and Eastvale call us because we’ve eliminated the gap between designer and builder that ruins most ADU projects.
6 Reasons We’re Chino’s Top ADU Company
1. Local Experience With Inland Empire Permitting
We’ve been working in San Bernardino and Riverside County permit offices since the 2017 ADU law changes opened the floodgates. Nadia Ellery’s team knows the difference between Chino’s planning counter and Ontario’s, which reviewers ask for structural calc notes, and how San Bernardino County handles setback variances versus Corona’s process. That knowledge saves months. A designer in Los Angeles who doesn’t know that Chino Hills has specific hillside grading requirements will cost you two permit cycles.
2. Strong Local Reputation Built Project by Project
We don’t chase reviews; we chase documentation. Every Ellery ADU Studio job leaves a photo record, a permit approval file, and a homeowner who can show their finished unit to the neighbors. In a market where ADU contractors come and go with every interest-rate cycle, we’ve stayed because our projects finish. Homeowners in Diamond Bar and Upland refer us not because we asked, but because their sister or coworker saw the actual building in their backyard.
3. State-Licensed, Insured, and Background-Checked Under the Haven Standard
Every pro working under our name is required to hold the license and insurance California requires, with license numbers on every proposal. Clause 3 of the Haven Standard, Verified crews, means we don’t just check boxes; we keep copies on file that homeowners can request. No hand-waving about “fully insured” without specifics. The tradesman who pours your foundation in Fontana has the same documentation as the electrician in Rancho Cucamonga.
4. Factory-Built and Site-Built Expertise With Leading Brands
We specify what fits the lot, not what we prefer to sell. For tight Chino backyards with alley access, a Plant Prefab unit can cut site time by weeks. For hillside lots in Chino Hills where crane access is limited, we’ve used Boxabl’s foldable modules. For homeowners who want a custom roofline matching their primary residence, we design stick-built with Tuff Shed components for the shell. Nadia Ellery’s team evaluates Mighty Buildings’ 3D-printed panels for specific fire-zone applications in Corona and Anaheim. We don’t represent one factory; we represent your lot’s constraints.
5. Transparent Pricing With Written Line-Item Quotes
Clause 1 of the Haven Standard, Have it in writing, means you get a flat price, written scope, and written warranty before anyone starts. Our Chino quotes break out site prep, utility tie-in, permit fees, and finish selections so you can see where the money goes. No “allowances” that balloon later. No “while we’re in here” discoveries that double the price. The number on the page is the number you pay, with change orders documented and signed if you request them.
6. Workmanship Warranty and Satisfaction Path
Every Ellery ADU Studio project carries a written workmanship warranty, with the terms spelled out before construction begins. If something isn’t right, we fix it. Clause 5 of the Haven Standard, No surprises, applies to the warranty process too: no deductibles, no “normal settling” excuses for structural issues, no runaround between designer and builder because they’re the same contract. Nadia Ellery’s team handles the callback directly.
Our Promise to You
If you’re not satisfied with any phase of work, we stop and correct it before moving forward. 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 respond to messages by the next business day. Every proposal includes a real schedule window, a named project lead, and a text when they’re en route. The price is fixed, the scope is written, and the documentation is yours at completion. That’s the Haven Standard, and it’s how we’ve operated since 2015.
Before
AfterFrequently Asked Questions
Most ADU projects fail at the handoff between designer and builder. Ellery ADU Studio is a design-build studio, meaning the drawings, permit set, and construction are one contract with one price. Since 2015, we’ve completed over 900 ADUs with zero gaps to blame. Call (909) 323-1107 to schedule your free estimate and see the Haven Standard in writing.
We stop and fix it before continuing. Our workmanship warranty is written and specific, not a vague “satisfaction guarantee.” If there’s a defect in our work, we repair it at our cost. For exact warranty terms on your project type, call (909) 323-1107 - estimates are free.
No. Our initial site evaluation and written line-item estimate are free. We visit your property in Chino, Chino Hills, Eastvale, Ontario, or surrounding areas, assess access and utilities, and deliver a fixed-price proposal with no obligation. Call (909) 323-1107 to schedule.
Yes. Every pro working under our name is required to hold the California contractor license and insurance their trade requires, with documentation available on request. We pull permits in Chino, San Bernardino County, Riverside County, and all cities in our service area. Call (909) 323-1107 to verify license status for your specific project.
We schedule site evaluations during our operating hours: Monday through Friday 7 AM to 7 PM, and Sunday 7 AM to 7 PM. A live coordinator answers calls during those hours and connects you with Nadia Ellery’s local team. Most Chino homeowners receive their written estimate within a few days of the site visit. Call (909) 323-1107 to book your free estimate.
Written by Nadia Ellery, Owner at Ellery ADU Studio Chino, serving Chino and the Inland Empire since 2015.