Brooklyn-based Infinity Properties NYC has filed applications for an eight-story, 21-unit residential building at 906 Bergen Street, located in western Crown Heights. The project will measure 20,259 square feet and its residential units should average 787 square feet apiece, indicative of rental apartments. Forest Hills-based ARC Architecture + Design Studio is the architect of record. The 4,807-square-foot assemblage consists of two three-story townhouses. Demolition permits were filed in March.