Notwithstanding anything in this subchapter to the contrary, applications made pursuant to this subchapter for subdivisions of land within the first tier of the coastal zone, as defined in Title 12, chapter 21 of this Code, shall not be approved by the Planning Director unless the subdivider submits evidence or a copy of a valid coastal zone permit authorizing such subdivision. Compliance with the terms and conditions of such coastal zone permit shall also be a condition of approval of any preliminary plat, general subdivision plan or final plat pursuant to this subchapter.