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The quite striking glass tower known as The Centria at 18 West 48th Street has nearly completed its facade work.

The 34-story residential condominium tower is a project of the J. D. Carlisle Development Corporation, which is headed by Jules Demchick. The developer's other major residential projects include Morton Square on West Street in the West Village and the Cielo on 83rd Street at York Avenue.

The facade of The Centria has a two tones of gray-blue glass. The western part of its north facade slopes downward gently at a angle of 1.6 degrees to conform with the "sky exposure plane" zoning regulations for the site, according to Geoffrey Turner, the project manager for Perkins Eastman, the architectural firm for the development, and its east facade is cantilevered slightly over the adjacent garage at 10 West 48th Street from which the project acquired unusued "air-rights."

The building will have a spa on the first floor, a conference center and a club room and lounge for the residents on the second floor.

There are 152 apartments and occupancy is anticipated for early next year.

The building is just to the east of the south end of Rockefeller Plaza where construction is also taking place just to the west of its north end for a new hotel at 25 West 51st Street. Both projects are a block away from the sunken plaza at Rockefeller Center.

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Architecture Critic Carter Horsley Since 1997, Carter B. Horsley has been the editorial director of CityRealty. He began his journalistic career at The New York Times in 1961 where he spent 26 years as a reporter specializing in real estate & architectural news. In 1987, he became the architecture critic and real estate editor of The New York Post.