4751 League Island Blvd presents a rare sublease opportunity within Philadelphia’s thriving Navy Yard innovation district. Purpose-built for biotech and advanced therapeutics, this facility offers up to 82,000 SF of flexible space, including ISO-7 and ISO-8 cleanrooms, support labs, cold storage, and warehousing. The building is engineered for speed-to-market and operational efficiency, with robust utility infrastructure including compressed air, CO2, N2, and backup power systems. Tenants benefit from seamless integration of office, R&D, and manufacturing areas, with options for dedicated entrances and future expansion. The site is part of a 400,000 SF manufacturing campus adjacent to CDMO and testing services, supporting the full lifecycle of life science operations. Located just minutes from Philadelphia International Airport, University City, and Center City, the Navy Yard offers unmatched accessibility and lifestyle amenities. With over 20 acres of parks, waterfront trails, and on-site dining, this vibrant ecosystem attracts top talent and fosters innovation. The sublease runs through 2037, providing long-term stability in a premier location.