The Ellery ADU Studio Pomona Guarantee
Every ADU we design, permit, and build in Pomona comes with one thing that doesn’t fit in a toolbox: a promise written down before we start. Since 2015, we’ve delivered more than 900 ADU projects across Southern California, and every single one began with a written price and ended with a documented photo record. In Pomona specifically, we’ve navigated the city’s ADU ordinance updates, the baseline hillside requirements that affect properties north of the 10 Freeway, and the specific setback rules that differ between the historic districts and newer developments. We don’t do handshake warranties. The Haven Standard governs every project, and Clause 1 is non-negotiable: the price you sign is the price you pay. No change orders unless you change the scope. No surprises buried in line 47 of a subcontractor’s invoice.
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 Pomona Building & Safety, we fix it. The promise is in writing before your project starts, not offered as an afterthought when something goes wrong.
- Parts and material handling. We specify and coordinate prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie - and we warranty our installation of those systems. If a manufacturer’s defect appears, we handle the claim. You don’t chase two companies while living in a construction zone.
- Site condition and cleanup. Our crews are background-checked and uniformed, and they leave the site documented. Every visit produces a photo record you receive, showing what was found and what was done. In Pomona’s older neighborhoods like Lincoln Park and Mayflower Village, where narrow lots make material staging tricky, we’ve learned to protect existing landscaping and hardscaping. The photo record proves it.
- On-time milestone arrival. We don’t promise unrealistic schedules. What we do promise is that when we commit to a milestone - foundation pour, rough inspection, final walkthrough - we hit it or we tell you why, with documentation, before the date passes. The photo record timestamps every phase.
- Honest pricing with no scope creep. Under Haven Standard Clause 1, your written price is locked at signing. Under Clause 5 (No Surprises), no door-side upsells appear. We’ve seen too many Pomona homeowners discover a “suddenly necessary” upgrade after demolition. That doesn’t happen here.
Our Satisfaction Promise
If something’s not right, we make it right. That’s the 365-Day Done Right Promise in plain language.
Here’s how it works in practice. During your final walkthrough, we review the permitted drawings against the finished ADU together. You point out anything that doesn’t match. We document it with photos - same as every other visit. If it’s our work or our oversight, we schedule the fix. No arbitration, no “that’s standard industry tolerance.” The drawings are the standard.
If an issue surfaces after you move in - a door that doesn’t seal, a window that leaks in Pomona’s winter rains, a floor that doesn’t feel right - you call (657) 286-7915. A live person answers, 24 hours a day. We don’t promise same-day construction on a finished ADU, but we do promise same-day acknowledgment and a scheduled fix within the promise period. The 365-day window gives you time to live in the space through a full seasonal cycle, including Pomona’s hot, dry summers when expansion and contraction reveal what mild weather hides.
We’ve honored this promise on garage conversions in Phillips Ranch where the existing slab needed unexpected grinding, on detached ADUs in north Pomona where hillside drainage required redesign, and on interior conversions in the downtown corridor where historic district requirements added complexity. Each time, the fix was documented, photographed, and completed without a new invoice.
Licensed & Insured Backing
A warranty is only as good as the company behind it. We’re licensed and insured, and our license number appears on every page of this site - not because it looks professional, but because you can verify it with the California Contractors State License Board right now. That verification shows our bond is active, our workers’ compensation is current, and our classification covers the work we describe.
Insurance matters more in ADU work than in most home services. We’re moving utilities, sometimes gas lines, often electrical panels. We’re excavating for foundations in neighborhoods where the original 1940s infrastructure still runs. In Pomona’s seismic zone, proper structural attachment isn’t optional. Our insurance and bonding mean that if something goes seriously wrong - not a paint scratch, but a real failure - there’s coverage beyond your homeowner’s policy.
The Haven Standard requires this transparency. Clause 1 gives you the written price. The photo record gives you the evidence. The 365-Day Done Right Promise gives you the recourse. And the license verification gives you the confidence that we’ll be here to honor it. We’ve been in business since 2015. We’ve completed 900-plus ADUs. We’re not a permit-and-disappear operation.
If you’re comparing estimates, bring us any written quote you’ve already received. Our Free Second Opinion will tell you what’s included, what’s assumed, and what’s missing. No obligation. No pressure to switch. Just the same direct language we’d want if we were hiring someone to build on our own property.
Call (657) 286-7915 to schedule your free estimate. The price we write down is the price you’ll pay. That’s not a slogan. It’s Clause 1.
Written by Nadia Ellery, Owner at Ellery ADU Studio Pomona, serving Pomona since 2015.