Subdivision regulations may include requirements as to the extent to which and the manner in which the streets of the subdivision shall be graded and improved, and water, sewer, and other utility mains, piping, connections, or other facilities shall be installed as a condition precedent to the approval of the subdivision. The regulations may provide for the tentative approval of the plat previous to such improvements and installation; but any such tentative approval shall not be entered on the plat.
SDCL 11-6-28