For the past 13 months, residents in most Memphis ZIP codes have had access to $15,000 in down-payment assistance from the Tennessee Housing Development Agency (THDA) if their income levels would have made it tough to buy otherwise.

In that time, more than 400 Shelby County residents — many of whom are first-time homebuyers — have participated in the program, claiming $6.3 million in financial assistance, which is far more than in any other Tennessee county.

“The program has just worked phenomenally…