(a) Notice for all elections held under this chapter must be given as required by Chapter 4, Election Code. The commissioners court shall give notice of an election to be held for a commissioners or justice precinct or a road district by posting notice in at least three public places in the precinct or district and at the county courthouse door.
(b) The commissioners court may, in addition to the notice required by Subsection (a), prescribe that notice of an election or hearing for bonds to be issued for a precinct or district be given by mail to:
(1) each registered voter in the precinct or district;
(2) each owner of property in the precinct or district as shown on the tax roll of the county; and
(3) each person having an interest in property in the precinct or district as may reasonably be ascertained.