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Properties Held for Sale and Property Dispositions
 3 Months Ended
Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]  
Properties Held for Sale and Property Dispositions Properties Held for Sale and Property Dispositions
Properties Held for Sale
As of March 31, 2021, no properties were classified as held for sale.
Property Dispositions
The following table summarizes the properties disposed of during the three months ended March 31, 2021:
PropertyDisposition DateProperty TypeApproximate Square Feet
Gross Asset Valuation
(in millions)
(Loss) Gain (in millions)
712 Madison Avenue (1)
January 2021Fee Interest6,600 $43.0 $(1.4)
133 Greene Street (2)
February 2021Fee Interest6,425 15.8 0.2 
106 Spring Street (2)
March 2021Fee Interest5,928 35.0 (2.8)
(1)Disposition resulted from the buyer exercising its purchase option under a ground lease arrangement.
(2)In the first quarter of 2021, the property was foreclosed on by the lender in conjunction with the related debt extinguishment.