Ellery ADU Studio in New Hampshire
Ellery ADU Studio designs, permits, and builds accessory dwelling units across New Hampshire under a single contract at a single written price. No separate designer, no separate contractor, and no gap between the drawings and the finished structure where blame tends to live. Since 2015, Ellery has taken more than 900 ADUs from first sketch to final inspection, and every one of them started the same way: a written price before any work began. New Hampshire homeowners get the full Haven Standard behind that price, in writing, before the first board is cut.
Why New Hampshire Homeowners Choose Ellery ADU Studio
The permit set is the product. That’s the sentence that separates Ellery from the designer-versus-builder blame game that derails most ADU projects in New Hampshire. When one company owns the drawings, the permit package, and the construction, there’s no one to point at when something doesn’t match. Ellery covers detached ADUs, garage conversions, junior ADUs and interior conversions, plus the site prep and utility work that New Hampshire lots actually require: frost-depth footings, septic and well separation, winter-rated insulation assemblies. The team is background-checked and uniformed, and the license number appears on every page, verified rather than claimed. If a New Hampshire homeowner already has a written estimate from another firm, Ellery provides a free second opinion on it. And in a state where modular and prefab construction is often the smartest way to build through a short season, Ellery specifies and coordinates Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie systems within the same single contract.
Backed by the Haven Family
Every Ellery ADU Studio project in New Hampshire operates under the Haven Standard, five published clauses that govern the entire engagement. Clause 1 is the one homeowners care about most: the price in writing before work starts, with no “call for a quote” anywhere in the process. The 365-Day Done Right Promise goes further. If the finished ADU is not built to the permitted drawings, Ellery makes it right. In writing, before the project starts. That’s the Haven condition for carrying the name: no surprises, documented evidence on every visit, and a live person answering the phone around the clock.
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