Transforming the historic Portland Armory into a performing arts center required a thoughtful approach as well as creative financing and design. Built in 1891, the armory stood for many years as one of its neighborhood’s defining elements, but by the turn of the 21st century it was in dire need of repair. Armed with a sales pitch for his partners and a plan for Portland Center Stage (PCS)—the city’s premier theater company—to raise funds to buy the armory, local developer Robert Gerding set out to convert the former fortress into a permanent home for PCS by reconstructing its distinctive facade and installing a state-of-the-art theater within. The redeveloped Gerding Theater achieved LEED (Leadership in Energy and Environmental Design) certification at the Platinum level, becoming the first building on the National Register of Historic Places, as well as the first performing arts center, to do so.

Although it is the second-largest 19th-century building in Portland, the armory has a footprint of only 20,000 square feet (1,858 m²). And the theater required 55,000 square feet (5,110 m²). The solution was to excavate 30 feet (9 m) below street level—requiring extensive shoring—to create enough volume to fit a 200-seat “black box” theater (placed underground), a 599-seat main theater, rehearsal spaces, and administrative offices.