Should the lender require mortgage loan insurance, all sorts of housing need this. These properties include condos, duplexes, and traditional homes. There are also some exceptions, such as investment properties and properties that are worth more than a million dollars. Investment properties are those in which the borrower will not reside, and they usually require a 20% down payment or more. However, this all depends on your lender. The most important factors that the lender will consider when purchasing mortgage insurance are the down payment, risk level, and loan value. So please check with them first to find out their policies.