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Organization and Basis of Presentation (Tables) | 9 Months Ended
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Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of commercial office properties | As of September 30, 2018, we owned the following interests in properties in the New York metropolitan area, primarily in midtown Manhattan. Our investments located outside of Manhattan are referred to as the Suburban properties:
|  |  |  | Consolidated |  | Unconsolidated |  | Total |  |
Location |  | Property Type |  | Number of Properties |  | Approximate Square Feet (unaudited) |  | Number of Properties |  | Approximate Square Feet (unaudited) |  | Number of Properties |  | Approximate Square Feet (unaudited) |  | Weighted Average Occupancy(1) (unaudited)
Commercial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manhattan |  | Office |  | 21 |  | (2) | 12,756,091 |  |  | 10 |  |  | 11,491,164 |  |  | 31 |  |  | 24,247,255 |  |  | 94.5 | %
|  | Retail |  | 5 |  | (3) | 312,623 |  |  | 9 |  |  | 352,174 |  |  | 14 |  |  | 664,797 |  |  | 98.4 | %
|  | Development/Redevelopment |  | 7 |  |  | 308,945 |  |  | 2 |  |  | 347,000 |  |  | 9 |  |  | 655,945 |  |  | 40.1 | %
|  | Fee Interest |  | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |  |  | — |  |  | — | %
|  |  |  | 33 |  |  | 13,377,659 |  |  | 22 |  |  | 12,190,338 |  |  | 55 |  |  | 25,567,997 |  |  | 93.2 | %
Suburban |  | Office |  | 13 |  |  | 2,295,200 |  |  | — |  |  | — |  |  | 13 |  |  | 2,295,200 |  |  | 91.6 | %
|  | Retail |  | 1 |  |  | 52,000 |  |  | — |  |  | — |  |  | 1 |  |  | 52,000 |  |  | 100.0 | %
|  | Development/Redevelopment |  | 1 |  |  | 1,000 |  |  | — |  |  | — |  |  | 1 |  |  | 1,000 |  |  | — | %
|  |  |  | 15 |  |  | 2,348,200 |  |  | — |  |  | — |  |  | 15 |  |  | 2,348,200 |  |  | 91.7 | %
Total commercial properties |  | 48 |  |  | 15,725,859 |  |  | 22 |  |  | 12,190,338 |  |  | 70 |  |  | 27,916,197 |  |  | 93.1 | %
Residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manhattan |  | Residential |  | 4 |  | (3)(4) | 511,097 |  |  | 10 |  |  | 2,156,751 |  |  | 14 |  |  | 2,667,848 |  |  | 92.4 | %
Suburban |  | Residential |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — | %
Total residential properties |  | 4 |  |  | 511,097 |  |  | 10 |  |  | 2,156,751 |  |  | 14 |  |  | 2,667,848 |  |  | 92.4 | %
Total portfolio |  | 52 |  |  | 16,236,956 |  |  | 32 |  |  | 14,347,089 |  |  | 84 |  |  | 30,584,045 |  |  | 93.0 | %
(1) | The weighted average occupancy for commercial properties represents the total occupied square feet divided by total square footage at acquisition. The weighted average occupancy for residential properties represents the total occupied units divided by total available units.
(2) | Includes 2 Herald Square, which is under contract for sale of a joint venture interest and has been classified as held for sale as of September 30, 2018.
(3) | As of September 30, 2018, we owned a building at 315 West 33rd Street, also known as The Olivia, that was comprised of approximately 270,132 square feet (unaudited) of retail space and approximately 222,855 square feet (unaudited) of residential space. For the purpose of this report, we have included this building in the number of retail properties we own. However, we have included only the retail square footage in the retail approximate square footage, and have listed the balance of the square footage as residential square footage.
(4) | Includes the Upper East Side Residential Assemblage and 1231 Third Avenue, which are classified as held for sale at September 30, 2018.

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