I am a first time buyer in the housing market, and I am looking to pay for a home in all cash, no house payments.

I have put in a bid on a large modular home that is located in a "trailer park." My mother in law says I have to have .

Do I HAVE to have if the house is paid off in full??? Or is this her just telling me to have it in case it were to burn down?
Anybody know what the average price per year is on ?