Construction is advancing on the 30-story, residential condominium tower at 310 East 53rd Street on the southeast corner at Second Avenue by Macklowe Properties, the developer of several major apartment towers such as RiverTower at 420 East 54th Street, RiverTerrace at 515 East 72nd Street, the Metropolitan Tower at 136 East 57th Street and 145 East 76th Street.

The new tower has been designed by SLCE Architects and will have a free-standing, blue-glass tower set on a five-story limestone-clad base.

The building will have 88 apartments and offers four kinds of residences: "mansions," which are located in the base and are 40-foot-high duplexes with wood-burning fireplaces that have three bedrooms and a library, 4 ? baths and 20 feet ceilings, one of which, with 3,913 square feet, is priced at $6,900,000 with estimated monthly common and real estate tax charges without 421A abatement is $4,507; duplex studios, which are also located in the base, and have one-bedroom, two baths and 20 foot-high ceilings, one of which, with 1,928 square feet, is priced at $2,024,400; tower residences, some of which have two bedrooms, a library 2 ? baths and 222 square-foot balconies, with prices ranging from $2,719,686 to $2,984,911, and some of which have three bedrooms, 3 ? baths and 146-square-foot balconies, with prices ranging from $3,285,700 to $3,996,00; and the triplex penthouse, which is priced "on request." The building's balconies have glass railings that extend slightly lower than the balcony.

The building will have a 24-hour doorman and concierge, a fitness center, a roof deck, valet parking in the building, and a garden. The apartments have walk-in closets and large entrance galleries.