Boulder 29, a new Class A office building, is a daring and creative adaptive reuse of a former two-story anchor store at an outdoor mall in Boulder, Colorado. A project team led by structural engineer JVA, architect Shears Adkins Rockmore (SAR+), and general contractor Saunders Construction reclad, renovated, and added a level to the 40-year old building, creating prime office space with exceptional views of the foothills and Boulder’s iconic flatirons. The original 155,000 SF big box store contained approximately 500 tons of structural steel and steel joists, 175 of which were removed and recycled. The adaptive reuse saved and repurposed over 325 tons of steel. In final form, floor areas on the lower two levels were slightly reduced to just over 60,000 SF apiece, while a new third level added 30,000 SF each of floor and roof. The project added 400 tons of new steel, with about 150 on the new third floor, 100 in the new roof, 25 at a plaza infill, 25 for plaza canopies, and the remainder for braced frames, floor infill, roof strengthening, and miscellaneous steel wall framing. Turning a department store into an office building presented several atypical hurdles ultimately overcome with steel solutions.