Lots shall contain a minimum of 20,000 square feet and have a road frontage of at least 100 feet: side yard and rear yards shall be as set forth in the NC neighborhood commercial district.

Off-street parking shall be permitted only in the rear yard and shall comply with the requirements of section 13-19.

Signs shall be limited to free-standing signs located no closer than 10 feet to the front property line and not exceed 15 square feet of area on each face. Such signs shall be either unlighted or shall have internal illumination only and are subject to section 13-17.

The premises shall at all times be maintained so as to preserve a residential appearance and no building may be erected or altered unless the plans for the front facade of the building have first been submitted to and approved by the planning board.

A ten-foot buffer strip of evergreen or other plantings approved by the planning board shall be maintained adjoining any lot for residential purposes.