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Description of Business and Organization
9 Months Ended
Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Description of Business and Organization Description of Business and Organization
    As used in these condensed consolidated financial statements, unless the context otherwise requires, “we,” “us,” “our,” the “Company,” and "ESRT" mean Empire State Realty Trust, Inc. and its consolidated subsidiaries.
    We are a New York City-focused real estate investment trust ("REIT"), with four revenue drivers: a portfolio of modernized, amenitized and well-located office, retail, and multifamily assets. ESRT’s flagship Empire State Building – the “World’s Most Famous Building” – also includes our Observatory Experience, Tripadvisor’s #1 United States destination attraction in its 2023 Travelers’ Choice Best of the Best Awards for two consecutive years.

    As of September 30, 2023, ESRT’s portfolio is comprised of approximately 8.6 million rentable square feet of office space, 0.7 million rentable square feet of retail space and 727 residential units. Our office portfolio included 11 properties (including three long-term ground leasehold interests) encompassing approximately 8.6 million rentable square feet. Nine of these office properties are located in midtown Manhattan and encompass approximately 7.6 million rentable square feet, including the Empire State Building. The remaining two office properties encompass approximately 1.1 million rentable square feet and are located in Stamford, Connecticut, with immediate access to mass transportation. Additionally, we have entitled land adjacent to one of the Stamford office properties, that can support the development of an approximately 0.4 million rentable square foot office building and garage. Our retail portfolio included approximately 0.7 million rentable square feet of retail space, predominantly located in Manhattan. Our multifamily portfolio included 727 residential units in New York City, 721 of which are located in Manhattan.
     We were organized as a Maryland corporation on July 29, 2011 and commenced operations upon completion of our initial public offering and related formation transactions on October 7, 2013 (the "IPO"). Our operating partnership, Empire State Realty OP, L.P. (the "Operating Partnership"), holds substantially all of our assets and conducts substantially all of our business. As of September 30, 2023, we owned approximately 59.9% of the aggregate operating partnership units in the Operating Partnership. We, as the sole general partner in the Operating Partnership, have responsibility and discretion in the management and control of the Operating Partnership, and the limited partners in the Operating Partnership, in such capacity, have no authority to transact business for, or participate in the management activities of, the Operating Partnership. Accordingly, the Operating Partnership has been consolidated by us. We elected to be subject to tax as a REIT for U.S. federal income tax purposes commencing with our taxable year ended December 31, 2013.