Any locality may by ordinance require that a person applying to the local governing body, local planning commission or board of zoning appeals pursuant to this chapter be responsible for all required notices. The locality shall require that notice be given as provided by § 15.2-2204. The locality may provide that, in the case of a condominium or of a cooperative, the written notice may be mailed to the unit owners’ association or proprietary lessee’s association, respectively, in lieu of each individual unit owner. The applicant may rely upon records of the local real estate assessor’s office to ascertain the names of persons entitled to notice. A certification of notice and a listing of the persons to whom notice has been sent shall be supplied by the applicant as required by the local governing body at least five days prior to the first hearing. The governing body shall allow any person entitled to notice to waive such right in writing. Nothing herein shall be construed so as to affect the validity of any ordinance or amendment adopted prior to July 1, 1992.