Please stop editing your responses in thanks, but a player could be lazy and not want to sell it to another player, the house could not have been refreshed, could not have found a buyer.
You're assuming that people are never going to change in account balance. If you don't see that a house upkeep gives opportunities to new and old players to potentially find houses off market then I fear for the CQC administration team, or you're just trying to push your own agenda, whatever that is.
Paying 10% to refresh on a house that players should already making money off of, if you can't afford it and sell it, then good that's what we want. If you can't afford it and do more runs, good thats what we want. If you can't afford it and lose it, good that's what we want.