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AppTec Laboratory Services Inc. Bldg 4751 League Island Blvd 55,000 - 82,000 SF of Office Space Available in Philadelphia, PA 19112
SUBLEASE HIGHLIGHTS
- ISO-7 and ISO-8 cleanrooms ready for occupancy
- Integrated office, lab, and manufacturing layout
- Adjacent to CDMO and testing services for turnkey operations
- Sublease through 2037 in a premier life sciences hub
- Robust utilities with backup generator and battery systems
- Minutes from airport, university, and downtown access
FEATURES
ALL AVAILABLE SPACE(1)
Display Rental Rate as
- SPACE
- SIZE
- TERM
- RENTAL RATE
- SPACE USE
- CONDITION
- AVAILABLE
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.
- Sublease space available from current tenant
- Mostly Open Floor Plan Layout
- Space is in Excellent Condition
- Warehouse, office, and support labs, available now
- 3-bay full-height loading dock
- Fully Built-Out as Research and Development Space
- Fits 138 - 656 People
- ISO-7/ISO-8 cleanrooms, available now
- 3 walk-in cold rooms, LN2 freezer space
- 20,000 SF future expansion area
| Space | Size | Term | Rental Rate | Space Use | Condition | Available |
| 1st Floor | 55,000-82,000 SF | Dec 2037 | Upon Request Upon Request Upon Request Upon Request | Office | Full Build-Out | 30 Days |
1st Floor
| Size |
| 55,000-82,000 SF |
| Term |
| Dec 2037 |
| Rental Rate |
| Upon Request Upon Request Upon Request Upon Request |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| 30 Days |
1st Floor
| Size | 55,000-82,000 SF |
| Term | Dec 2037 |
| Rental Rate | Upon Request |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | 30 Days |
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.
- Sublease space available from current tenant
- Fully Built-Out as Research and Development Space
- Mostly Open Floor Plan Layout
- Fits 138 - 656 People
- Space is in Excellent Condition
- ISO-7/ISO-8 cleanrooms, available now
- Warehouse, office, and support labs, available now
- 3 walk-in cold rooms, LN2 freezer space
- 3-bay full-height loading dock
- 20,000 SF future expansion area
PROPERTY OVERVIEW
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.
PROPERTY FACTS
SELECT TENANTS
- FLOOR
- TENANT NAME
- INDUSTRY
- 1st
- WuXi AppTec
- Manufacturing
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AppTec Laboratory Services Inc. Bldg | 4751 League Island Blvd
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