Long Island-based Horseshoe Developers has filed applications for two two-story, two-family houses at 258-260 Buttrick Avenue, located in the East Bronx’s Throggs Neck section. The buildings will measure 3,744 square feet each. Across both, the full-floor residential units should average a family-sized 1,248 square feet apiece. There will be a total of four off-street parking spaces.Gerald J. Caliendo’s Briarwood-based firm is the architect of record. The 7,500-square-foot plot is occupied by a single-story home. Demolition permits were filed in February.