Marketing has started for the conversion of the 7-story former loft building at 650 Sixth Avenue to a residential condominium.

The 1892 building is on the southeast corner at 20th Street and is across 20th STreet from the former Episcopal Church of the Holy Communion that was designed in Gothic Revival style circa 1850 by Richard Upjohn and was converted into the Limelight disco.

It is also across the avenue from the former O'Neill Department Store that is being converted to residential condominiums by Elad Properties, which is also converting part of the Plaza Hotel and which also had bought this property in August, 2005 for about $47 million and then sold it for more than $70 million about a year later to its current owners, K-W 650 Associates LLC of which Klaus Kretschmann is president, according to records on file with the Department of Buildings.

The building has a 16-foot high lobby that has art shows organized by the Jack Shainman Gallery and the building's marketing theme is "White Space," which is echoed in the minimalist white apartments. The lobby is highlighted by an aluminum sculpture of slanted elements.

The location is in the heart of the Ladies' Mile Historic District and the Chelsea and Flatiron neighborhoods. There is excellent shopping and public transportation in this area as well as many restaurants and boutiques.

The 7-story building has a roof deck, a gym, wine storage, and a concierge service.

The 67 apartments have ceiling heights ranging from 10 ¿ to 12 feet and sliding glass walls between living rooms and bedrooms.

Kitchens have high-gloss Poggenpohl cabinetry, Corian countertops, Sub-Zero refrigerators, Thermador ovens, and Miele dishwashers. Bathrooms have Waterworks Chord bathtubs and wall-mounted polished chrome fixtures.

Perkins Eastman is the architect for the conversion.

Occupancy is anticipated for next Spring.