The Ellery ADU Studio Los Angeles Guarantee
We stand behind every ADU we design, permit, and build in Los Angeles with a guarantee that lives in writing, not in a handshake. Since 2015, we’ve delivered 900+ ADUs across this city, from garage conversions in Silver Lake to new detached units in the Valley, and every single one left with a written price locked before the first shovel hit dirt and a documented photo record showing exactly what was found and what was done. That’s not marketing. That’s the Haven Standard, and it’s how we work in Los Angeles because anything less doesn’t survive a city inspection, a permit revision, or a conversation with your neighbor who wants the same contractor you had.
What’s Covered
- Workmanship to the permitted drawings. Our 365-Day Done Right Promise means if the finished ADU doesn’t match what was approved by LADBS, we make it right, in writing, before your project starts. No “that’s close enough” on setback variances, no fudged foundation specs. The city inspector has seen more creative permit applications than ours, and that is precisely the point.
- Parts and materials specified, not substituted. When we specify Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, or James Hardie systems, that’s what arrives on your Los Angeles site. Under Haven Standard Clause 5 (No Surprises), the scope is locked at signing. No door-side upsells, no “this is basically the same” swaps.
- Site condition documented, not described. Every visit produces a photo record you receive, not a summary of how it felt. The existing slab is 4 inches, within range for a conversion; here is what that means for your foundation line item. You see what we saw.
- On-time arrival for scheduled work. Our crews are background-checked, uniformed, and licensed, and they show up when the written schedule says they show up. Los Angeles traffic is real, but “we’ll be there sometime Tuesday” isn’t a schedule.
- Honest pricing with zero scope creep. Under Haven Standard Clause 1, every project carries a written price before any work begins. The words “call for a quote” do not appear anywhere on our site because they don’t appear in our process. What we write is what you pay.
Our Satisfaction Promise

If something’s not right, we fix it. That’s the entire process.
Here’s how it works in practice. During construction, our documented photo record creates a shared reference point. You see the pre-pour reinforcement, the rough electrical before drywall, the waterproofing detail at the roof-wall intersection. If what you see doesn’t match the permitted drawings or the written scope, we stop, identify the gap, and correct it. No waiting until final inspection to discover a problem.
After completion, the 365-Day Done Right Promise remains in force. If the finished ADU isn’t built to the permitted drawings, Ellery makes it right. This isn’t a “we’ll come talk about it” offer. It’s a written commitment you hold before the project starts, not after something goes wrong. We’ve operated in Los Angeles since 2015, and we’ve learned that a guarantee only matters when it’s tested. Ours has been.
The make-it-right process starts with a call to (424) 551-7706. A live person answers 24/7. No voicemail queue, no callback promise that doesn’t materialize. You’ll speak to someone who can access your project file, your photo record, and your written scope. From there, we schedule a site review, identify the specific deviation, and produce a written correction plan with a timeline. If we missed it, we own it. That’s the Haven Standard, and it’s the only way we’ve found to build ADUs in Los Angeles that survive the city’s permit history, the resale inspection, and the owner’s daily use.
Licensed & Insured Backing
The written guarantee is only as solid as the business behind it. We’re licensed and insured, which means there’s a regulatory body that verifies our qualifications and an insurance carrier that stands behind our work. For a Los Angeles homeowner, this matters in ways that aren’t obvious until they matter enormously.
Licensing means we’ve met California’s requirements for contractors operating in this market. It means our license number appears on every page of this site, verified, not just claimed. Insurance means that if the unexpected happens, there’s coverage that doesn’t depend on our personal goodwill. For an ADU project in Los Angeles, where a garage conversion can uncover a 1920s foundation or a new detached unit can trigger a hillside grading review, this backing isn’t paperwork. It’s the difference between a solvable problem and a homeowner absorbing the full cost.
We’ve been at this since 2015. We’ve designed, permitted, and built 900+ ADUs in this city. The license and insurance aren’t the guarantee. They’re the foundation that lets the guarantee mean something when a homeowner in Los Angeles needs it to.
Free Second Opinion

If you already have a written estimate in hand from another Los Angeles ADU contractor, we’ll review it. No charge, no obligation. We’ll tell you what we see: whether the scope covers LADBS requirements, whether the line items match typical Los Angeles costs for site prep and utilities, whether the permit timeline is realistic. We’ve seen estimates that miss sewer lateral capacity in older neighborhoods, that underestimate foundation work on garage conversions, that don’t account for the fire separation requirements between a Junior ADU and the main house. A second opinion doesn’t cost you anything. Acting on a flawed estimate can cost thousands.
Call (424) 551-7706 to schedule your free estimate or bring in your existing quote for review. Written price before any work starts. Documented photo record on every visit. The 365-Day Done Right Promise in writing. That’s what we guarantee at Ellery ADU Studio Los Angeles.
Written by Nadia Ellery, Owner at Ellery ADU Studio Los Angeles, serving Los Angeles since 2015.