SDCL § 10-25-4 — Additional persons entitled to notice

If the real property is situated within a municipality, notice also shall be served on:
(1) The holder of any special assessment certificate that is a lien upon the real property;
(2) The holder of any tax certificate issued upon sale for any special assessment; and
(3) The municipal finance officer.
The service provided for in this section may be made only upon each person described in this section whose name and post-office address is known to the holder of the tax certificate or may be obtained from the municipal finance officer or the treasurer, as provided in § 10-25-7 .