It was remodeled in 1998. Your agent should be able to find out the original year it was built for you. They are not listing it in the MLS. Agents often use 9999 on remodeled homes because some people do not want older homes.
I don't know that I have ever seen agents answering questions here from Montcalm County. If you need a buyer's agent, I would be happy to refer you to someone experienced in the area.
Good luck with your purchase!