Prime Development Opportunity in Graduate Hospital | 1535 Catherine Street Lot at 1537 is also for sale. An exceptional opportunity to build in one of Philadelphia’s most coveted and consistently high-performing neighborhoods—Graduate Hospital. Offered are two contiguous parcels, 1535–1537 Catherine Street, presenting a rare side-by-side development canvas in a location where demand, walkability, and long-term value converge. The offering includes two distinct zoning classifications, allowing for strategic flexibility and creative development: •