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4751 League Island Blvd
Philadelphia, PA 19112 South Philadelphia East

Rate Upon Request

Research And Development For Lease  •  55,000+ SF

Property Details

  • Property Type Research And Development
  • Year Built 2004
  • Total Building Size 82,000 SF
  • Tenancy Single
  • Building Class B
  • Zoning I1
36 Transit Score
11 Walk Score

1 Space Available

Name Space Use Size Rent Details
1st Floor Ste Office 55,000-82,000 SF Rate Upon Request 
The building is a fully cGMP certified clinical manufacturing facility in the heart of the Philadelphia Navy Yard and has existing ISO-7/ISO-8 grade cleanrooms.

  • Date available: 30 Days
  • Lease term: None
  • Service type: To Be Determined
  • Built out as: Research And Development
  • Space Type: Sublet

Description 

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.

Highlights

ISO-7 and ISO-8 cleanrooms ready for occupancy
Sublease through 2037 in a premier life sciences hub
Integrated office, lab, and manufacturing layout
Robust utilities with backup generator and battery systems
Adjacent to CDMO and testing services for turnkey operations
Minutes from airport, university, and downtown access

Property Flyers

Amenities

  • Bio-Tech/ Lab Space

Major Tenants

Tenant SF Occupied Lease End Date
WuXi AppTec 10/31/2019

Public Transportation

AirportDriveWalkDistance
Philadelphia International 16 min - 7.7 mi
Trenton Mercer 55 min - 38.0 mi

Parking Details

Parking Available: Yes
Reserved: No
Spaces Provided: 267
Type: Surface
Included in Rent: Yes
Paul Garvey 215-519-0001 Cushman & Wakefield
Paul Garvey 215-519-0001 Cushman & Wakefield