Area marketers familiar with the project tell GlobeSt.com the Mansion the Mansion will be about 200 feet taller than Buckhead's current tallest building, the 486-foot, 44-story Park Avenue Condos built in 2000. The tallest building in metro Atlanta is the 55-story Bank of America Plaza at 1,023 sf, according to city planning department staffers. The 60-story SunTrust Plaza, built in 1992 at a height of 871 feet, has the most floors at 60.

Williams, the former chairman of locally based apartment and condo developer, Post Properties Inc., and Arthur Blank, co-founder of Home Depot Inc., are co-investors in the Mansion. City Centre Properties is the developer. The $100-million Williams Equity Fund, founded by John Williams, is funding the project.

Condo prices at the Mansion are expected to start at $3 million. That still won't make the property the most expensive in the Buckhead district. That honor, to date, goes to Regents Park at Peachtree Battle, also on Peachtree Road. Regents Park condos will start in the $4-million range, area marketers tell GlobeSt.com.