Heritage Bank failed late last year, and state exams will not become public record until November.
Because of the lender's size, the FDIC is unlikely to publish an extended report on the reasons for its collapse.
But court records show that Heritage financed a deal in which the price of land in Hernando County nearly doubled — on the same day.
In April 2006, Hampton Ridge Developers bought a 20-acre parcel for $690,000 and sold it to a company controlled by builder James W. DeMaria later that day for $1.16 million.
The bank lent DeMaria's company $1.2 million to make the purchase.
It is unclear if Heritage executives knew of the same-day price increase.
DeMaria's companies ultimately defaulted on more that $3 million in loans from Heritage.
Two Heritage directors did not return calls in June.
DeMaria's numbers have been disconnected.