There is. Draw up a contract and offer these people R100k for their houses. They get the money right away, but still get to live in their houses until the day of the apocalypse. The day after, when everyone is dead, the houses legally become yours. Big win for them. They get R100k immediately AND still get to keep their houses until they die. Only thing is the day after the date of the apocalypse, the world is still spinning, everyone is still alive and you're now the legal owner of millions in property.
What kind of churches do you guys go to? Stay away from the cults that's under a tent/tree in someone's back yard where people gets sprayed with doom and then you won't be as confused about Christianity.