They will conduct testing to determine if the growth is in fact mold and will be honest in their assessment if the tenants' negligence was the cause of the issue.

Don't allow them to pet-sit, test a rescue animal, etc.2.

There doesn't seem to be any case law in any state where the series was has been put to the test in court.

If you were buy say 4 months prior to that date and move out to start reno for 10 weeks then close 6 weeks later in order to hit the 2 year it doesn't sound like that wouldn't pass the sniff test, though you may successfully do it and not have the IRS question the time frame. 

I think it was only several hundred dollars to get my license (classes, tests, and license).

I whipped together a proof-of-concept that allows me to:Type an addressFetch all mailable unitsSend postcard invitations to residents that welcome them to take a one-minute survey RE the performance of their propertyI tested it out against my property and received one response out of 20 postcards - a very low conversion rate. 

So I need a first line test to say "is this worth looking up?" 

What I did was call the local plumbers of my target area.As part of the closing process, my target area requires a DYE TEST.

Then test them and revise as needed.

We do use one of the Schlage wireless locks ... and are testing a few others.