The final checkout for hotel guests at the iconic Waldorf Astoria is March 1st, after which its new owner, Chinese insurer Anbang Insurance Group, will begin converting the 1,413 hotel rooms into 840 renovated hotel rooms and 321 luxury condos to the tune of $1 billion. Earlier this month, the developer filed these plans with the Department of Buildings, which also call for adding retail space, a restaurant, and a fitness center on the ground floors. They’ll retain the historic ballrooms, exhibition space, dining rooms, and banquet rooms, but will still need approvals from the Landmarks Preservation Commission for any work on these public spaces; the building has long been an exterior landmark, but the LPC recently calendared a request to landmark the Art Deco interiors.

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