The regulations, or any amendments to the regulations, shall be recorded in the office of the clerk of each city and town in which any portion of the land to which the regulations apply is located. Notice that the regulations or amendments have been adopted shall be sent by registered mail to the owner of every parcel of land to any portion of which the regulations or amendments are applicable. For the purposes of this provision, the person to whom the land was assessed in the last preceding annual tax levy shall be addressed in the same manner as the notice of the tax, unless a different owner or a different address is known to be the correct one. The notice shall also be given by posting in one or more public places in each city and town in which any portion of the land subject to the regulation is located, a map of the area subject to the regulations with sufficient explanation to give the public and the owners of land reasonable notice of the adoption of the regulations or amendments. (Added 1985, No. 222 (Adj. Sess.), § 2.)