LEONIA, N.J. — Ridgewood, N.J.-based Poskanzer Skott Architects has begun a renovation and expansion project for Bergen Equestrian Center, located at 40 Fort Lee Rd. in Leonia. Construction will encompass the existing clubhouse and staff quarters. The equestrian center has recently undergone renovations, which were designed by RSC Architects. Poskanzer Skott will be providing full design services for this newest renovation project. The construction timetable was not released.