Ellery ADU Studio in Oklahoma
Ellery ADU Studio is a design-build studio, not a contractor. The drawings, the permit set, and the construction are a single contract at a single written price. That distinction matters in Oklahoma, where accessory dwelling units are gaining ground in established neighborhoods throughout the state, and where the typical handoff from designer to builder has derailed more projects than any materials shortage ever has. Since 2015, Ellery Adu Studio specialists have designed, permitted, and built more than 900 ADUs, and every Oklahoma homeowner who works with us gets the same guarantee that anchors the entire Haven family: a written price before any work starts, and a documented photo record when the work is done.
Why Oklahoma Homeowners Choose Ellery ADU Studio
Oklahoma homeowners do their research before they contact anyone. They read the three-star reviews first, they want the price on the page, and they have seen too many projects where the designer blames the builder and the builder blames the drawings. Ellery removes that gap entirely. One contract covers ADU design and permitting, garage conversion, new detached ADUs, junior ADUs and interior conversions, and site prep and utilities. That means neither the designer nor the builder can point at the other when something is off, because they are the same team working from the same permit set. We treat the permit set as the core product for every Ellery ADU Studio in Oregon - ADU project, not an afterthought, and we are fluent in prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie, which we specify and coordinate within the same single contract. Every Ellery project in Oklahoma includes a free second opinion on any written estimate already in hand, a documented photo record on every visit, and a 365-Day Done Right Promise: if the finished ADU is not built to the permitted drawings, Ellery makes it right, in writing, before the project starts. Background-checked, uniformed crews work under a license number published on every page, and a live person answers calls 24 hours a day.
Backed by the Haven Family

Haven was formed in 1998 to buy small home-service companies that were already doing the work properly and were about to be bought by someone who would stop. Ellery ADU Studio is independently owned and operated, and what Haven contributes is the Haven Standard: five published clauses covering the price in writing before work starts, a real arrival window with a named technician, licensed and insured crews with the license number on the page, photographic evidence of what was found on every visit, and no upsell at the door. Every Ellery ADU Studio in Pennsylvania - ADU job and every Oklahoma job is held to all five, and the words “call for a quote” do not appear anywhere on this site.
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