No locality shall have the authority to establish or enforce a mandatory disclosure requirement for a real estate licensee, any party to a contract for the sale or listing of residential real property, or any authorized agent of such party. For purposes of this section, “mandatory disclosure” means any notification required to be made by a homeowner or his authorized agent to a potential or actual buyer or his authorized agent. Prohibited mandatory disclosures include mandatory notifications in contracts, contract amendments or addenda, advertising, other promotional materials, and subsequent deeds after the initial deed is recorded, related to the sale of residential real estate.