I'm pretty sure you didn't remember it wrong Dawn. I seem to remember it that way too.
The congregation had to come up with money to pay for the land. The WTS would lend an amount equal to the value of the land for the construction of the KH. The loan from the WTS would be repaid at a rate of interest that was quite reasonable, compared to what the going rate was - it was considerably lower than the 18-20% that banks were charging in the mid 80's. Once the construction was completed, the congregation had a special meeting to "dedicate" the KH to Jehovah (and, as it turns out, the WTS).
The congregation was in effect making mortgage payments to the WTS to repay the money that was borrowed. However, when the accounts statements were read, the word "RENT" was used when referring to the amount paid for the building. The WTS's buzz word du jour during the mid-to-late 80's and into the 90's for this kind of thing was "simplification". [8>] As in, "Simply give us all your money/assets."
I suppose it could have been different from one congregation to the next, however, I went through a KH renovation under this arrangement, plus 2 KH quickbuilds and an assembly hall construction. Each time, this was the modus operandi.
I would love to see any scanned BOE letters regarding the procedures for financial assistance for KH builds from the WTS.
Love, Scully