...is a great idea but seriously underused and I think after a couple of visits nobody really needs to go back into these places.
I know this might sound a bit daft and I'm not a fan of real bureaucracy but how about creating a housing tax. Glitches owning property would have to physically go into one of the halls to pay these taxes on a regular basis (every 2-3 weeks?). Taxes could be worked out on house value, number of trees/pigs/chickens etc.
Not massive amounts but the payments would have to be dropped off in person. Failure to pay would drop your property price by a percentage until you'd cleared your outstanding debt.
Might make the property market a bit more interesting too, imagine getting a 50k house cheaper because the owner never bothered to pay their taxes.