We voted in a fine for breach/violation of any house rules. This was added to the house rules as a new rule. Our attorney told us we had to do it this way. SHs were notified of it by letter with a revised/new house rules page on which it was incorporated.

If someone violates a rule, we advise him of it in writing and suggest he read the house rules if he hasn't lately. If he violates the same rule a 3rd time, we add the fine to his monthly billing statement.

Our fine is $200. We haven't had to charge it often but when we have, SHs paid it. If they didn't, what we'd do is leave it on their account and add the late fee (once) we charge for any unpaid account balance if it wasn't paid the month after it was charged. It would sit there as a lien and have to be paid eventually when the SH sells.

As I said, our SHs have paid the fine in all cases so far so it hasn't been an issue for us. Since our fine is rather steep, we've also had a lot fewer violations of rules.