Len O’Donnell Of Affinius Capital Acquires Life Sciences Asset In Hell’s Kitchen For $191.7M
619 West 54th Street
$191,700,000
$598/SF
Building Size
320,116 SF
Asset Type
Life Sciences
Closing
Dec 24, 2025
AI
The property involved in this transaction is the Hudson Research Center located at 619 West 54th Street in Hell’s Kitchen, Manhattan. The asset is categorized as Life Sciences and encompasses a total area of 320,116 square feet. The sale price for this property was $191,700,000, which translates to a price per square foot of $599.
Summary of transaction details:
- Property Type: Life Sciences
- Transaction Amount: $191,700,000
- Address: 619 West 54th Street
- Market: Hell’s Kitchen, Manhattan
- Square Footage: 320,116
- Price per Square Foot: $599
- Buyer: Len O’Donnell - Affinius Capital
- Seller: Lisa Silverstein - Silverstein Properties
Len O’Donnell, representing Affinius Capital, acquired an undisclosed stake in the property from Lisa Silverstein, who is associated with Silverstein Properties. This transaction indicates a strategic investment in a significant asset within the life sciences sector in Manhattan.
Players
New York Life Sciences Market Snapshot
Boundary boundary · Life Sciences · Sale transactions
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Purchase Price
Annual NOI
Loan Amount
Interest Rate (%)
Loan Term (yrs)
Down Payment (%)
Cap Rate
0.08%
Cash-on-Cash
-0.02%
Monthly Payment
$14,164
Annual Debt Svc
$169,964
Annual Cash Flow
$-11,334
DSCR
0.93