Down Payment Assistance Loan for. AC Boost provides financial assistance to middle-income working households to purchase a home in Alameda County.By entering just a few figures, such as the purchase price of the home, the amount of the down payment, the amount of the loan and the mortgage term length, you. A guy I'm potentially selling my car too says he needs a bill of sale to give the bank before they give him a loan? Enter the amount of the First Deed of Trust, if any. Check all the applicable boxes, and complete the information requested.