The roofer would need to testify under oath in court.It's also considered a big no-no to offer compensation in return for an affidavit. 

Then you will have to show up in court, perhaps numerous times, to testify.

I am not testifying to their work because I haven't seen but you may want to reach out.

I know for the last public comments we sat through hours of testimony only to have 3 people testifying against the policies get two minutes each. 

Specific to the state the property is located in, either the foreclosure lawsuit will go to court, in which the guarantor will be a defendant and possibly be called as a witness to testify, or this step is skipped in a non judicial foreclosure state 6.

It's good to be aware of them, even testify before the committees overseeing them, but until it goes before the legislative body, it's all heartburn.

Use it fully, live by it, call you in to testify on his behalf.

@Reggie ReardenIf the problem tenant has threatened another tenant with a gun ask the police to go in with you for your own protection.Additionally if something illegal is in the room the cop can take care of it on the spot and testify at the next eviction hearing.

For now, the neighbor’s testimony should be enough, assuming they’re willing to testify anonymously to get rid of an annoying neighbor.Now, even if I have the evidence and neighbors testimony and decide to sue, the courts don’t grant evictions for breaching the contract then that could be a waste of money and time and it’s an awkward position to be in.

To them it may be a lark (what can we get away with) but they are not thinking about the longer term consequences (typical).If they don't pay up and it actually goes to court, your PM can show / testify that no funds were pro-rated and transferred from the previous owner for March rent as well as that no payment has been made.