A barren 11-acre patch of asphalt was all that remained of a once-booming commercial plaza; abandoned for years, this West Seneca, N.Y., property was an eyesore in the community. But thanks to the efforts of a local politician and a nonprofit agency dedicated to improving the quality of life for people with disabilities, this space has been transformed into Ebenezer Square Apartments, a comfortable, safe, energy-efficient housing complex.