It sounds like you have a solid system with clear communication on extensions and vacancy openings.

As someone in an HOA that doesn't have clear architectural drawings on where our plumbing is and who is connected where, I can say it would be very helpful to have this in general.

In this instance, I would enjoy the dispute and clearly will not be backing down.  

Any trouble with them delivering a clear title?

The NoD must clearly state the missed payment, cure period, and consequences; consulting an attorney for your first default is a smart precaution.

I would get rid of that immediately.Second, I would ensure your rules are clear, in writing, attached to the lease, and posted in locations where the occupants can't possibly miss them.

Fees should be clearly stated in writing, easy to understand, and justifiable.

If they're late multiple times and or declared bankruptcy, then I would expect them to continue, unless they can provide some clear explanation.If you're having problems renting, it is either a pricing, condition or marketing issueGood luckGino

You're clearly don't comprehend well.

My parents have a neighbor that he is planning to sell the property that he own free and clear.