 In real estate investing, the due-on-sale clause can be an impediment for a property owner who wishes to sell the property and have the buyer take over an existing loan rather than paying the loan off as part of the sale.Likewise, a due-on-sale clause would interfere with a seller's extension of financing to a buyer by using a wraparound mortgage, also called an "all-inclusive mortgage", "all-inclusive deed of trust", "all-inclusive trust deed", or "AITD.