RICHMOND, Va. — A Charlottesville developer has revealed its plans for the 2-acre site it purchased earlier this year in Manchester. Castle Development Partners is planning to build 70 townhome units at 301 Maury St., according to plans filed with the city last week. The project would be configured as 35 “two-over-two” townhomes, wherein each four-story structure would house a pair of stacked two-story units.