Demolition is nearly complete and construction is expected to start soon for a new 17-story condominium apartment building on the northwest corner of Park Avenue South and 19th Street.

The project will contain 52 apartments and is being developed by Yitzchak Tessler of Linjan Associates, who was a co-developer with Max Capital of the recent conversion of two buildings formerly owned by the United Federation of Teachers at 260 Park Avenue South. Mr. Tessler is also involved in the current conversion of the former Helmsley Windsor Hotel on the southeast corner of 58th Street and the Avenue of the Americas.

The new building will replace four low-rise structures and it has been designed by Gwathmey Siegel, the architects of the very impressive, curved, reflective-glass, new residential tower now nearing completion at 445 Lafayette Street across from Cooper Union.

Gwathmey Siegel is also the architects for the project at 100 West 58th Street where some double-height windows have been installed and a new large vaulted penthouse. The firm is also the architect for a major residential development on the site of the Superior Ink company facility on West Street in the Far West Village for the Related Companies and of a 53-story hotel and residential tower at 23 Washington Street for The Moinian Group.

The 13-story base of the new building will have curved corner bay windows and a handsome rectilinear facade grid of inset multi-pane windows that relate to several nearby pre-war commercial buildings in the Flatiron and Gramercy Park districts.

Mr. Tessler's other projects have included 150 Nassau Street and 66 Leonard Street. CityRealty.com attempted to reach Mr. Tessler today unsuccessfully.