5.3.2 Phasing of the Development and Improvements

The owner of the tract may prepare and secure tentative approval of a subdivision plat of the entire area and may install the above improvements only in a portion of such area, but the improvements must be installed or bond posted to cover such installations in any portion of the area for which a final plan is approved for recording.  The owner may only sell or lease, or offer for sale or lease, lots located in the improved portion of said property, provided, however, that streets, trunk sewers and sewage treatment plants and other utilities are either designed and built to serve the entire area or designed and built in such a manner that they can be expanded easily, or extended, as the case may be, to serve the entire area.