The Ellery ADU Studio North Hollywood Guarantee
We stand behind every ADU we design, permit, and build in North Hollywood with a single written promise: if the finished unit is not built to the permitted drawings, we make it right. This is not a handshake or a feeling. It is the 365-Day Done Right Promise, backed in writing before your project starts, and it applies to every garage conversion, detached ADU, junior ADU, interior conversion, and site prep job we take on. Since 2015, we’ve delivered 900+ ADUs across Los Angeles County, and every one left with a written price before work started and a documented photo record when work was complete. In North Hollywood, where LADBS plan checks can run 8-12 weeks and hillside grading triggers extra Geotechnical review, a guarantee that survives the permit process matters more than one that sounds good on day one.
What’s Covered
- Workmanship to the permitted drawings. Our crews build what was approved, not what was easier that Tuesday. If the finished ADU deviates from the permitted set, we correct it at our cost under the 365-Day Done Right Promise.
- Parts and material handling with full documentation. You receive a documented photo record on every visit, showing what was found, what was installed, and what condition it was in. No summary of how it felt. Evidence.
- Site condition on completion. We leave the work area broom-clean and construction-debris-free. The photo record includes the final walkthrough, so there’s no dispute about whether the driveway was poured or the trench was backfilled.
- Honest pricing with zero scope creep. Under Haven Standard Clause 1, every project carries a written price before any work begins. Under Clause 5 (No Surprises), the scope is locked at signing. No door-side upsells, no “while we’re here” additions, no change orders born of vague allowances.
- Live accountability. A live person answers calls 24/7. If something feels off at 9 PM on a Saturday, you reach a human who can access your project file, not a callback queue that evaporates by Monday.
- Free Second Opinion on any written estimate. Already have a quote in hand? We’ll review it against the permitted scope, flag what’s missing, and tell you what we see. No charge, no obligation.
Our Satisfaction Promise

If you’re not satisfied, we have a process, not a prayer. First, call us. A live person answers 24/7, and your concern enters our project log that same hour. Second, we return to the site within one business day to inspect with you, photo record in hand, and compare the built condition against the permitted drawings. Third, if the work falls short of the documented scope, we schedule the correction and complete it at no additional charge. This is the 365-Day Done Right Promise in operation, and it is binding because it is written, not implied. We do not subcontract design to one party and construction to another, then watch them blame each other. Our one-contract design-build model means Nadia Ellery and our team own the outcome from the first site measure through final inspection. In North Hollywood, where ADU setbacks on R1 lots often trigger the 4-foot side-yard rule and fire sprinkler requirements vary by water district, that single point of accountability prevents the finger-pointing that kills projects.
Licensed & Insured Backing
Licensing and insurance are the guarantee behind the guarantee. Ellery ADU Studio North Hollywood operates as a state-licensed, insured, and bonded design-build contractor. That means our license number appears on every page of this site, verified, not just claimed. It means our general liability and workers compensation coverage protect your property and our crews while work is underway. It means permit applications list our license, not a borrowed number. For North Hollywood homeowners, this matters because LADBS requires licensed contractors for all ADU permit pulls, and unpermitted work triggers stop-work orders that can freeze a project for months. Our background-checked, uniformed technicians and crews carry that credential on every job. The Haven Standard, our operating framework, requires it. So does Nadia Ellery, who has operated this studio since 2015 and stakes her name on every contract signed.
How Our Guarantee Compares to Typical ADU Contracts

Most North Hollywood homeowners we meet have already collected one or two estimates before finding us. Here’s what we see repeatedly, and how our written commitments differ.
| Typical Practice | Ellery ADU Studio North Hollywood |
|---|---|
| “Call for a quote” or verbal ballpark that shifts once work starts | Written price before any work begins, per Haven Standard Clause 1 |
| Design and construction handled by separate companies with separate contracts | One contract covering design, permitting, and build, so neither party can deflect responsibility |
| Photo documentation at the contractor’s discretion, or none at all | Documented photo record on every visit, delivered to the client |
| Warranty implied or limited to manufacturer defects only | 365-Day Done Right Promise: built to permitted drawings, corrected at our cost if not |
| Voicemail or callback promises during business hours only | Live person answers calls 24/7 |
Prefab and Modular Guarantee Coverage
We specify and coordinate prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie. Our guarantee covers our coordination, site prep, utility tie-ins, and finish work on these projects, even when the module ships from the manufacturer’s facility. The 365-Day Done Right Promise applies to the complete installed unit, not just the stick-built portions. Manufacturer warranties on the module itself run separately, and we document those terms in your contract so there is no confusion about who covers what. In North Hollywood, where narrow streets in the NoHo Arts District and hillside access in the foothills can complicate module delivery, our site prep and crane coordination are often the difference between a successful install and a stalled one. We guarantee that coordination.
What We Ask of You

A guarantee is a two-way commitment. We ask that you review the written scope before signing, attend the pre-construction walkthrough, and notify us promptly if something seems off during construction. The photo record helps, but your eyes on site matter too. We ask that you not modify the permitted scope mid-project without a written change order, because unpermitted alterations void our ability to guarantee the final inspection pass. And we ask that you preserve your copy of the contract, the photo record, and the final inspection sign-off. These documents are your proof if a future buyer’s lender asks whether the ADU was legally built.
Ready to Talk Through Your Project?
Call (424) 407-8266 to schedule your free estimate. We’ll bring a written scope and price to that first meeting, per Haven Standard Clause 1. Already have an estimate in hand? Ask for our Free Second Opinion. We’ll tell you what we see.
Written by Nadia Ellery, Owner at Ellery ADU Studio North Hollywood, serving North Hollywood since 2015.