No zoning permit, building permit or certificate of occupancy shall be issued for any parcel of land or structure which was sold or on which improvements were undertaken in violation of the provisions of this chapter, or for the use of a lot which was created by subdivision after the effective date of, and not in conformity with, the provision of this chapter. No site improvements, such as but not limited to excavation or construction of public or private improvements, shall be commenced except in conformance with this chapter and in accordance with plat approvals and the issuance of required permits.