SPRAWLING THREE-BEDROOM SPONSOR UNIT IN PRIME PARK SLOPE! Are you looking for an expansive, sun-soaked space to create a home tailored to your own design? You have found that opportunity right in the heart of Park Slope. Located in the PS 321 zone just moments from Prospect Park, this serene top-floor unit boasts three spacious bedrooms, one full bathroom (with the space to add in another), high ceilings and large South-facing bay windows in the living room -- flooding the home with natural sunlight. You are encouraged to bring your contractor/architect to view this blank canvas brimming with possibilities. Nestled on a highly coveted park block, 557 4th Street is an eight-unit, walk-up coop that includes common laundry, basement storage and bike storage -- and allows in-unit laundry and central AC mini-split units. Pets allowed upon board approval. FIRST OPEN HOUSES: Saturday 3/9 from 12:30-2pm & Sunday 3/10 from 12-2pm.