Kitchen, White Cabinet, Light Hardwood Floor, and Recessed Lighting Architects who practice in dense cities know its almost impossible to add square footage to an apartment. Yet at a garden-level residence in Boston's historic Beacon Hill neighborhood, Chris Greenawalt of Bunker Workshop was able to unearth 70 square feet of living space through a little excavation.  Photo 1 of 5 in An Archaeological Renovation Adds Precious Space to a Tiny Boston Apartment from Beacon Hill