E. On receipt of the application the board shall submit the application to the commission for a report. Before reporting to the board, the commission shall hold at least one public hearing after giving at least fifteen days' notice of the hearing by one publication in a newspaper of general circulation in the county seat. The following specific notice provisions also apply:

1. 1. In proceedings involving one or more of the following proposed changes or related series of changes in the standards governing land uses, notice shall be provided in the manner prescribed by paragraph 2 of this subsection:

   1. (a) A ten per cent or more increase or decrease in the number of square feet or units that may be developed.
   2. (b) A ten per cent or more increase or reduction in the allowable height of buildings.
   3. (c) An increase or reduction in the allowable number of stories of buildings.
   4. (d) A ten per cent or more increase or decrease in setback or open space requirements.
   5. (e) An increase or reduction in permitted uses.

2. 2. In proceedings governed by paragraph 1 of this subsection, the county shall provide notice to real property owners pursuant to at least one of the following notification procedures:

   1. (a) Notice shall be sent by first class mail to each real property owner, as shown on the last assessment, whose real property is directly affected by the changes.
   2. (b) If the county issues utility bills or other mass mailings that periodically include notices or other informational or advertising materials, the county shall include notice of the changes with the utility bills or other mailings.
   3. (c) The county shall publish the changes before the first hearing on the changes in a newspaper of general circulation in the county. The changes shall be published in a display advertisement covering not less than one-eighth of a full page.
3. 3. If notice is provided pursuant to paragraph 2, subdivision (b) or (c) of this subsection, the county shall also send notice by first class mail to persons who register their names and addresses with the county as being interested in receiving the notice. The county may charge a fee not to exceed five dollars per year for providing this service and may adopt procedures to implement this paragraph.
4. 4. Notwithstanding the notice requirements prescribed in paragraph 2 of this subsection, the failure of any person or entity to receive notice does not constitute grounds for any court to invalidate the actions of a county for which the notice was given.