Penthouse in Boston’s Millennium Tower asks nearly $3,000 a square foot

Penthouse 3A at the three-year-old Millennium Tower in Downtown Crossing is a sleek reminder that Boston condos are now known to either sell for or to ask around $3,000 a square foot.

The sum, of course, was unheard of in the city only a few years ago. But luxury developments such as Millennium, as well as fellow skyscraper One Dalton and waterfront properties such as Pier 4 and EchelonSeaport, have changed that. In fact, at least two penthouses at Pier 4 in the Seaport District have closed for well north of $4,000 a foot.

The penthouse at Millennium Tower is asking $12.5 million through Douglas Elliman’s Pamela Cushing and Haley Cutter—or $2,996 a square foot. It runs to 4,172 square feet, and includes three bedrooms and four and a half bathrooms. The tag covers two garage parking spaces too and conveys some dictatorial views of the region.

Note: The spread is also asking $25,000 a month on the rental market. Six of one, half dozen of the other.