It is mandatory that the recorded plan and the deeds indicate that there shall be no additional development. The open space shall be restricted against any future building, development, or use except as is consistent with that of providing for open space for recreation, conservation, agriculture, and aesthetic satisfaction of the residents of the development or of the general public. Buildings or uses for noncommercial recreation, cultural, or agricultural purposes compatible with the open space objectives may be permitted only with the express approval of the Planning Board, following approval of the building, site, and operational plans by the Planning Board.