A blanket loan, or blanket mortgage, is a type of loan use to fund the purchase of more than one piece of real property. Blanket loans are popular with builders and developers who buy large tracts of land, then subdivide them to create many individual parcels to be gradually sold one at a time. Rather than securing a new mortgage each time a portion of the development is sold, the borrower uses the blanket loan to buy them all. Once a parcel is sold, a portion of the mortgage is released, with the rest of the mortgage remaining intact.