Gilsey House rooftop penthouse bedroom with patio.

A Rooftop Addition on a 19th-Century Building Suits a Growing Family’s Needs

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An expansive sliding glass door retracts into the zinc facade, opening up the master suite to a garden terrace with restored historic handrails. This echoes a 15-foot Corian wall that transforms a children's bedroom into an entertainment space, allowing flexibility and anticipating the time when the boys leave for college.