The Ellery ADU Studio Chino Guarantee
We’re Nadia Ellery and the team at Ellery ADU Studio Chino, and we’ve been designing, permitting, and building ADUs in this market since 2015. Our guarantee isn’t a marketing line - it’s The Haven Standard, a set of written commitments we sign before your project starts. Every one of the 900+ ADUs we’ve completed carried a written price locked at signing, a documented photo record of every site visit, and our 365-Day Done Right Promise: if the finished ADU isn’t built to the permitted drawings, we make it right. No voicemail queues, no callback promises that vanish. A live person answers when you call (909) 323-1107, and if you already have a written estimate from another builder, we’ll give you a Free Second Opinion on it.
What’s Covered
- Workmanship to the permitted drawings. Our 365-Day Done Right Promise means if your completed ADU in Chino doesn’t match what was approved by the city - wall placement, ceiling height, window sizing, utility routing - we correct it at our expense, not yours.
- Written price before any work starts. Under Haven Standard Clause 1, you receive a line-item, fixed-price quote before we pull the first permit or break ground. The words “call for a quote” don’t appear anywhere in our process because the number is already in writing.
- Documented photo record on every visit. You don’t get a summary of how the work felt - you get dated, geotagged photographs showing what we found and what we did. Foundation condition before pour, framing inspection pass, final utility connections. Evidence, not impressions.
- No scope creep, no door-side upsells. Haven Standard Clause 5 (No Surprises) locks the scope at contract signing. If we missed a condition during our site evaluation, that’s our planning error, not your change order.
- Site left clean after every phase. Construction debris doesn’t sit for weeks. Our crews clear daily or phase-end, and the photo record includes the condition we left the property in.
- On-time permit coordination. We don’t control Chino’s plan-check queue or the San Bernardino County building department’s schedule, but we do control our submittal quality. Incomplete drawings are the main reason permits stall, and we don’t submit until they’re complete.
- Honest prefab and modular specification. We specify and coordinate Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie systems under the same single contract. No passing you between a designer who blames the factory and a factory who blames the installer.
- Background-checked, uniformed crews. The license number on every page of our documentation is verified, not just claimed. You know who’s on your property and what credentials they carry.
Our Satisfaction Promise
If something’s not right, here’s what happens. You call (909) 323-1107 and a live person answers - no voicemail queue, no “we’ll call you back tomorrow” that doesn’t materialize. We schedule a site visit within 48 hours, review the photo record against the permitted drawings, and identify the gap. If it’s our workmanship or a deviation from approved plans, we correct it under the 365-Day Done Right Promise. If it’s a question about how a prefab system interfaces with site-built components - say, a Mighty Buildings unit’s utility chase meeting your existing sewer lateral - we coordinate directly with the manufacturer, not hand you a phone number and wish you luck.
We’ve had clients in Chino’s College Park neighborhood discover during final walkthrough that a window placement felt off compared to the rendering. The photo record showed it matched the permit set exactly - but the rendering had been revised after permit approval. That’s a communication miss on our end, and we addressed it. We’ve also had a garage conversion in the Preserve area where the existing slab measured 3.5 inches, not the 4 inches our initial probe suggested. We didn’t change-order the foundation reinforcement - we absorbed it, because our site evaluation should have caught the variance. The Haven Standard means we own our misses.
Your recourse isn’t a Yelp review and hope. It’s a written promise, signed before work starts, with a specific process and a named owner who answers the phone.
Before
AfterLicensed & Insured Backing
The real guarantee behind our paperwork is what happens when something goes wrong that no promise can prevent - a subcontractor injury, a property damage event during excavation, a code interpretation that shifts mid-project. We’re state-licensed and insured & bonded, which means there’s a financial and regulatory backstop beyond our company balance sheet. In Chino’s permit environment, where San Bernardino County’s building department can flag seismic detailing or fire separation requirements that weren’t apparent at application, that backing matters. If a rework is required by code interpretation change, our insurance and bonding structure absorbs the liability, not your mortgage.
We’ve operated under this model since 2015 because ADUs in Chino aren’t theoretical exercises - they’re second units on active residential properties where the main house is still occupied, where setback variances (the extra distance the city requires between your new ADU and the property line) can vary by zoning overlay, and where utility trenching through established landscaping carries real risk. The license number on your permit set matches the license number on our contract matches the license number on our insurance certificate. Verified, not just claimed.
How Our Guarantee Differs from Typical ADU Contracts
Most ADU projects in Chino involve at least two contracts: one with a designer for drawings and permit submittal, another with a builder for construction. When the as-built wall doesn’t match the window schedule, each points at the other. Our one-contract design-build model means that can’t happen - the same entity responsible for your Abodu or Plant Prefab specification is responsible for its site integration.
We’ve also seen competitors advertise “satisfaction guaranteed” without defining the term. Under The Haven Standard, satisfaction is defined: built to the permitted drawings, at the written price, with photo documentation of every step. If you’re not satisfied that those three conditions were met, we make it right. That’s not enthusiasm - it’s a clause.
Frequently Asked Questions
It covers workmanship and compliance with the permitted drawings for 365 days from final inspection. If your completed ADU in Chino deviates from what the city approved - structural, mechanical, or finish - we correct it at no charge. Call (909) 323-1107 to start the review process; estimates for covered corrections are free.
No. Haven Standard Clause 1 locks your written price at signing, and Clause 5 (No Surprises) prevents scope creep. The only price change possible is if you request a change in writing, which triggers a written amendment you approve before work proceeds. Call (909) 323-1107 to review how this applies to your specific project.
We pull all permits as part of our design-build contract. Our permit set includes structural calculations, Title 24 energy compliance, and San Bernardino County-specific fire separation details. You receive copies of all approved documents and inspection sign-offs. Call (909) 323-1107 to confirm permit jurisdiction for your Chino property.
We offer a Free Second Opinion on any written estimate or permit set already in hand. We’ll review the drawings for constructability, identify potential inspection issues specific to Chino’s enforcement patterns, and quote the build phase under the same Haven Standard terms - written price, photo record, 365-Day Promise. Call (909) 323-1107 to schedule the review.
Our license number appears on every page of your project documentation, and our insurance certificate is available on request. The background-check and uniform policy is applied to all field personnel, not just lead technicians. If someone arrives at your Chino property without Ellery ADU Studio identification, call (909) 323-1107 immediately.
You receive the full permit set with inspection sign-offs, the complete photo record organized by phase, a written warranty document citing the 365-Day Done Right Promise, and a final line-item reconciliation showing no deviation from your locked price. These are your records for resale, refinance, or future reference. Call (909) 323-1107 if any document is missing at closeout.
Ready to Talk Guarantee in Writing?
The Haven Standard isn’t a brochure promise - it’s the contract you’ll sign. We’re happy to walk through each clause before you commit, including how the 365-Day Done Right Promise applies to prefab systems like Cover or Dvele versus site-built construction. No voicemail queue. No callback that doesn’t materialize. A live person at (909) 323-1107.
Already have a written estimate from another Chino ADU builder? Bring it in for a Free Second Opinion. We’ll tell you what’s solid, what’s missing, and what the Haven Standard would change - in writing, before any work starts.
Written by Nadia Ellery, Owner at Ellery ADU Studio Chino, serving Chino since 2015.