Before & After: A Super-Skinny Row House in Brooklyn Gets an Airy, Loftlike Makeover

The usual width of a townhouse in New York City is about 18 to 20 feet. Priscilla Caldwell’s is a mere 14 feet wide. The art advisor, curator, and founder of Vail Caldwell Projects had walked past the house in the Cobble Hill neighborhood of Brooklyn for years and admits to having been a tiny bit obsessed. With good reason: The four-story, brick house caps a row of even smaller houses in the Warren Place Mews built in the late 19th-century as workers’ housing. "There is no mews more beautiful than this one," architect Nate McBride declares.