Temporary Buydowns and Affordability
This paper is directed to a neglected aspect of the problem of home ownership affordability: the impact on affordability of temporary buy downs. A temporary buydown is an option offered to home buyers to reduce the mortgage payment in the early years of the loan. The borrower allocates cash up front to an escrow account from which funds are withdrawn monthly to supplement the borrower's mortgage payment.Temporary buydowns are underused partly because of the difficulty of determining whether, in any particular case, they will increase affordability. This paper develops a new instrument called the maximum affordable mortgage (MAX) which automatically allocates the buyer's available cash between buydown, down payment and other uses in a manner which maximizes affordability for the buyer, subject to whatever underwriting constraints the investor wishes to impose on payment graduation and/or the total size of the buydown.The lender originating the MAX must be able to solve a complex algorithm at the point of sale, but the complexity is all behind the scenes. Using a computer, a loan officer can quickly find the cash allocation that maximizes affordability. The power of the MAX in increasing affordability may be enhanced if it is combined with a buyup wherein the lender trades off lower points against a higher rate. Copyright American Real Estate and Urban Economics Association.
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Volume (Year): 22 (1994)
Issue (Month): 3 ()
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