A mortgage loan up to a maximum of 75% of the lending value of the property. Mortgage loan insurance is not required for this type of mortgage. Covenant A clause in a legal document which, in the case of a mortgage, gives the parties to the mortgage a right or an obligation. For example, a covenant can impose the obligation on a borrower to make mortgage payments in certain amounts on certain dates. A mortgage document consists of covenants agreed to by the borrower and the lender.