Claudio Stivelman spent five years building his 11,000-square-foot dream house in Golden Beach, Fla. The house, completed in 2011, has six bedrooms, 8½ bathrooms, a movie theater, a wine cellar and a 37-yard-long swimming pool. Mr. Stivelman says he loves the home, but he is moving out—to a 3,635-square-foot condo in the Muse, a building he is co-developing nearby.

Mr. Stivelman, who lives with his longtime girlfriend, discovered he needed a small army to keep up his giant home: two housekeepers, a weekly handyman and regular...