TF Cornerstone is a New York City real estate developer and owner and developer of both residential and commercial property.

It is perhaps best-known, however, for its residential holdings, particularly luxury rentals such as 2 Gold Street and 45 Wall Street in the Financial District as well as 200 West 26th Street in Chelsea and 201 East 69th Street on the Upper East Side. TF Cornerstone also developed 505 West 37th Street, an 825-unit development in Manhattans emerging Hudson Yards area. Some apartments in these buildings rent in the low five figures.

TF Cornerstone is also behind the massive, 1,194-unit Hunters Point South project on the Queens waterfront.

Commercially, the firm controls the office buildings 230 Park Avenue South, the Carnegie Hall Tower, and 387 Park Avenue South, where TF Cornerstone has its headquarters, as well as office buildings in Washington, D.C.

The firm grew out of the work of brothers Tom and Fred Elghanayan, who spun off from their old Rockrose firm into TF Cornerstone in 2009. Tom serves as chairman of the firm and Fred as president.