Plats of towns, subdivisions or additions must not bear the name of any other town or addition in the same county, nor can the same word or words similar or pronounced the same, be used in making a name for said town or addition, except the words city, place, court, addition or similar words, unless the same is contiguous and laid out and platted by the same party or parties platting the addition bearing the same name, or a party files and records the written consent of the party or parties who platted the addition bearing the same name. All plats of the same name must continue the block numbers of the plat previously filed.
Idaho Code § 50-1307