No person, firm or corporation, proposing to make or having made a subdivision within jurisdiction of these Regulations shall enter into any contract for the sale of, or shall offer to sell any subdivision or any part thereof, or shall proceed with any construction work on such proposed subdivision, including grading, until he or it has obtained from the Planning Commission, the approval of the preliminary plat of the proposed subdivision.
(Ord. 1973-10. Passed 1-8-74.)