Palmetto Compress (c. 1918) is listed on the National Historic Registry. Taking up half a city block, the 4-story structure is one of only three buildings of its type and size remaining in the country. Together with Columbia-based architect Garvin Design Group, Triangle restored Palmetto Compress Warehouse and repurposed it as a unique retail and apartment building. The building actually faced demolition in 2012 but was saved by a grassroots effort. The rehabilitation project focused on preserving the original warehouse form, while giving it new life as an apartment and retail building. Palmetto Compress now helps anchor a transforming district between downtown Columbia and the riverfront.
In 2017, during a ceremony at the State House, Triangle Construction Company, along with Garvin Design Group and PMC Property Group, were on hand as Palmetto Compress received the SC Historic Preservation Award from Governor Henry McMaster. The Honor Awards celebrate successful and exemplary historic preservation projects around the Palmetto State.