West End Avenue is home to some of the most regal buildings in all of Manhattan, and soon those buildings might be off limits to the real estate developers who are constantly looking to transform Manhattan with new construction. A few years ago, the West End Preservation Society submitted a proposal to the Landmarks Preservation Commission to expand the historic district on West End Avenue, thereby preserving a huge swath of the area. If approved, the proposed district will extend from West 70th Street all the way up to West 109th Street between Broadway and Riverside Avenues, a 2-mile stretch on the Upper West Side that encompasses 745 buildings in all. This change would eliminate new construction on West End Ave, although it would still allow developers to convert existing buildings into condos. Nonetheless, in a neighborhood that attracts very affluent buyers and renters, it's safe to say that developers will not be happy about being forced to give up such a valuable part of Manhattan.