All such subdivisions and site plans which may be approved or filed under the provisions of this section shall have three years from November 1, 2010, to be filed in the Orange County Clerk's office as an approved subdivision plat or with the Building and Code Enforcement Officer as a signed, approved site plan, as the case may be. Following such a three-year period, said subdivision or lots thereof or site not subject to a valid filed subdivision plat or site plan must be resubmitted to the Planning Board for approval in full conformity with the provisions this chapter.