The Ellery ADU Studio San Bernardino Guarantee
Every ADU we design, permit, and build in San Bernardino comes with our word in writing before we start, and our accountability in person until you’re satisfied. Since 2015, we’ve completed over 900 ADUs across California, and every single one began with a fixed, written price and ended with a documented photo record of what was built. In San Bernardino, where the city requires specific fire separation ratings for garage conversions and where San Bernardino County’s unincorporated areas follow different setback rules than the city proper, that written clarity matters more than promises. We’re Nadia Ellery and our team at Ellery ADU Studio San Bernardino, and we don’t ask for trust - we document it.
What’s Covered
- Workmanship guaranteed for 365 days. Our 365-Day Done Right Promise means if the finished ADU doesn’t match the permitted drawings we submitted to San Bernardino Building & Safety, we make it right - and that commitment is in your contract before we break ground, not offered as an afterthought when something goes wrong.
- Written price locked at signing. Under Haven Standard Clause 1, the price you see before work starts is the price you pay at final inspection; no change orders hiding behind “unforeseen conditions” that should have been caught during site prep and utility assessment.
- Documented photo record on every visit. You receive dated photos of what we found and what we did - not a technician’s summary of how the day felt - so there’s evidence if a question arises about whether the existing garage slab was adequate or whether we routed electrical per the approved panel schedule.
- Prefab and modular coordination guaranteed. When we specify Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, or James Hardie systems, we coordinate delivery, crane access, and utility tie-ins under the same single contract - no gaps between what the designer drew and what the installer received.
- Permit compliance verified, not assumed. We pull permits for every ADU category we handle - garage conversions, detached new construction, Junior ADUs, interior conversions - and we pass inspections; if a San Bernardino inspector flags an issue, we address it at our cost if it stems from our drawings or installation.
- Site condition documentation protects both of us. Before we touch your property in Arrowhead, Del Rosa, or the Base Line corridor, we photograph existing conditions - driveway slope, utility locations, mature tree root zones - so there’s no dispute about whether that crack existed before our excavation or after.
- Cleanup and protection included. Your main house stays your home during construction; we protect access paths, contain dust per San Bernardino’s particulate regulations, and leave the site broom-clean after each phase - documented in the same photo record you receive.
- On-time milestone accountability. Our design-build schedule includes permit submission dates, inspection windows, and material lead times; if a prefab unit from Cover or Dvele faces a factory delay, we tell you before you have to ask, with revised dates in writing.
- Honest pricing with no door-side upsells. Haven Standard Clause 5 (No Surprises) locks the scope at contract signing; we don’t arrive at your San Bernardino property with “additional recommendations” that inflate the price after you’ve already arranged financing or cleared the garage.
- Free Second Opinion honored without pressure. Bring us any written estimate from another ADU contractor in the San Bernardino area - we’ll review the scope, the permit strategy, and the line items, and tell you where we agree and where we’d approach it differently, at no charge.
Our Satisfaction Promise
If something’s not right, we fix it. That’s the entire process.
Here’s how it actually works. You notice an issue - maybe the finished floor elevation in your converted garage ADU doesn’t match the approved plans, or the mini-split location blocks the window operation we specified. You call (909) 359-6463. A live person answers, 24 hours a day, because voicemail queues don’t resolve construction problems. We schedule a site visit within our standard response window, Nadia Ellery or a senior project lead reviews the condition against the permitted drawings and the photo record, and we present a written correction plan with a date.
If the issue stems from our design, our permitting, or our construction, we correct it under the 365-Day Done Right Promise at no additional cost. If the issue stems from a change you requested after permit approval - a bathroom flip, a window size increase - we quote that separately under Clause 1, in writing, before we proceed. No surprises either direction. We’ve handled corrections in San Bernardino’s flood-prone neighborhoods near the Santa Ana River where grading adjustments were needed, and in hillside areas near University Parkway where retaining details required redesign; in both cases, the homeowner had the original photo record and the approved plans to compare against.
The promise only works because we document everything. Without the photo record, without the written scope, without the permitted drawings, a “satisfaction guarantee” is just words. We give you the evidence to hold us to ours.
Licensed & Insured Backing
A guarantee is only as solid as the business behind it. Ellery ADU Studio San Bernardino is licensed and insured, with coverage that protects your property during construction and liability protection that extends to our crews on your site. In San Bernardino, where the city requires contractor licensing for any ADU project exceeding $500 in labor and materials, that licensing isn’t decorative - it’s the mechanism that lets us pull permits, schedule inspections, and obtain the Certificate of Occupancy that makes your ADU legally rentable or occupiable.
Insurance matters specifically here because ADU construction in San Bernardino involves real risks: trenching for sewer lateral extensions near existing gas lines, crane placement for prefab units in tight Arrowhead lots, electrical panel upgrades in older Del Rosa homes with outdated service. Our coverage means if an accident occurs, your homeowner’s policy isn’t the first line of defense. Our background-checked, uniformed technicians carry license documentation on every page of our proposals and contracts - not because it looks professional, but because California law requires it and because you have the right to verify who is working on your property.
The Haven Standard we operate under - written price, photo record, done-right promise - exists because Nadia Ellery built this studio after seeing too many San Bernardino homeowners caught between a designer who blamed the builder and a builder who blamed the designer. One contract, one accountable party, one set of documents you can reference if anything needs making right. That’s the guarantee. It’s in writing before we start, and it’s backed by a license and insurance you can verify.
Call (909) 359-6463 to schedule your free estimate, or bring us your existing written estimate for a Free Second Opinion. We’ll show you exactly what we stand behind, and how we document it.
Written by Nadia Ellery, Owner at Ellery ADU Studio San Bernardino, serving San Bernardino since 2015.