The Woolworth townhouse in Manhattan is reported to be about 20,000 square feet overall, but I couldn’t verify a reliable source for its exact depth measurement from the available information. The public reporting I found describes its total size and location on East 80th Street, not a front- to-back lot or building depth figure.

What is known

  • It is a limestone townhouse on the Upper East Side, often described as Manhattan’s largest private residence.
  • Its size is consistently reported at roughly 20,000 square feet.
  • Recent coverage focused on its sale history, not its dimensions in feet from street frontage to rear wall.

Why depth is hard to pin down

Depth for a townhouse can mean different things: the building’s interior depth, the lot depth, or the usable rear extension. The articles I found do not provide a precise measurement for any of those, so giving a number would be guesswork.

Quick scoop

If you mean the overall scale: it’s a very deep, mansion-sized townhouse , but the exact depth isn’t stated in the sources I found. If you want, I can help estimate it from the lot dimensions and floor area using public property records.