Architect Alex Gil and his wife, Claudia DeSimio, affixed a 750-square-foot addition to the roof of a 19th century Williamsburg townhouse, transforming their cramped third-floor apartment into a modern duplex.  Heather Corcoran’s Saves from Get an Advance Look at the Amazing Residences on Dwell's Brooklyn Home Tour

Heather Corcoran’s Saves

Architect Alex Gil and his wife, Claudia DeSimio, affixed a 750-square-foot addition to the roof of a 19th century Williamsburg townhouse, transforming their cramped third-floor apartment into a modern duplex.