The Ellery ADU Studio Hesperia Guarantee
We’re Nadia Ellery and the team at Ellery ADU Studio Hesperia. Since 2015, we’ve designed, permitted, and built more than 900 ADUs across Southern California, and every single one started with a written price and ended with a documented photo record. Our guarantee isn’t a marketing line. It’s three concrete commitments backed in writing before your project starts: a written price that doesn’t change, a photo record of what we found and what we did, and a 365-Day Done Right Promise if the finished ADU doesn’t match the permitted drawings. In Hesperia’s High Desert climate, where freeze-thaw cycles test foundations and summer heat pushes cooling loads, those commitments matter more than promises made over the phone.
What’s Covered
- Workmanship to the permitted drawings. Your ADU is built to the plans that passed Hesperia building inspection, not to whatever seemed close enough that day. If the finished work deviates from the permitted set, we make it right under our 365-Day Done Right Promise.
- Written price before any work starts. Under Haven Standard Clause 1, you receive a line-item written quote before we break ground or file permits. The words “call for a quote” do not appear anywhere in our process because they don’t appear in our standard.
- Documented photo record on every visit. You don’t get a summary of how the visit felt. You get timestamped photos of what we found, what we did, and what condition we left the site in. This matters in Hesperia, where dust, caliche soil, and seasonal temperature swings create conditions that need to be seen, not described.
- Parts and materials specified, not substituted. If we specify Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, or James Hardie systems, that’s what gets ordered and installed. Any substitution requires your written approval and a revised line-item quote.
- Site left clean after every phase. Garage conversions in Hesperia’s older neighborhoods, like the areas near Main Street or around the Hesperia Golf Course, often mean working in tight yards with limited access. We don’t leave debris for you to navigate around.
- On-time permit submissions and inspection scheduling. We know San Bernardino County’s inspection calendar and Hesperia’s plan check queue. We submit complete packages the first time because re-submissions cost weeks, and we don’t pass that cost to you.
- No door-side upsells or scope creep. Under Haven Standard Clause 5 (No Surprises), the scope is locked at signing. If we discover unexpected conditions, like a shallow garage slab or unpermitted prior work, we document it, photograph it, and quote the change in writing before proceeding.
Our Satisfaction Promise
If something’s not right, we fix it. That’s the 365-Day Done Right Promise, and it’s in writing before your project starts.
Here’s how it works. During construction, our crews and technicians are background-checked, uniformed, and working under a single contract that covers design, permitting, and build. There’s no designer blaming the builder or the builder blaming the designer. One contract, one responsible party: us.
If after final inspection you believe the finished ADU doesn’t match the permitted drawings, you call (760) 493-7752. A live person answers, 24 hours a day. We schedule a walk-through within five business days. If we agree there’s a deviation, we correct it at our expense. If we disagree, we bring in a third-party inspector at our cost and abide by their finding.
This isn’t a manufacturer’s warranty on a water heater or a window. It’s our guarantee that the structure we built matches the plans you paid for and the city approved. In Hesperia, where ADUs often serve as rental income for retirees or housing for adult children, that assurance has real financial weight. We’ve honored this promise on projects in the Oak Hills area, near the Mojave River, and in the neighborhoods south of Ranchero Road. The process is the same every time: document, photograph, correct, and show you the fix.
We also offer a Free Second Opinion on any written estimate you already have. Bring us another contractor’s line-item quote and we’ll review it against what we know about Hesperia’s soil conditions, setback requirements, and utility tie-in costs. No charge, no obligation.
Licensed & Insured Backing
A guarantee is only as solid as the company behind it. We’re licensed and insured, and our license number appears on every page of our site and every contract we sign. That number is verifiable with the California Contractors State License Board, not just claimed in fine print.
Insurance and bonding protect you if something goes wrong that our workmanship promise doesn’t cover: property damage during excavation in Hesperia’s rocky soils, injury on site, or subcontractor non-payment that could cloud your title. We’ve maintained continuous coverage since 2015 because we’ve seen what happens to homeowners who trusted uninsured operators during the last ADU boom.
The Haven Standard requires this transparency. Clause 1 gives you the written price. Clause 5 locks the scope. The 365-Day Done Right Promise gives you recourse. And the license, insurance, and documented photo record give you proof. In a market where some ADU companies have come and gone in a single construction cycle, we’ve been in Hesperia and the surrounding High Desert long enough to know that standing behind your work is how you stay in business.
Call (760) 493-7752 to schedule your free estimate. You’ll get the written price before any work starts, and you’ll know exactly what we guarantee before you sign.
Written by Nadia Ellery, Owner at Ellery ADU Studio Hesperia, serving Hesperia since 2015.