They are less likely to do something shady if another realtor is witness, because it can destroy their reputation.

Six months to a year later you are on the witness stand. 

I'm looking for advice on how to best give notice: 1) In person with witness 2) Use sheriff department to serve 3) USPS certified with tracking.  

Then the whole form which is witnessed and sometimes notarized (depends on state) is placed in safe deposit box.

I have witnessed this first hand on a couple of occasions. 

The witnesses we have at the table today represent a broad cross-section of the interested parties in the mold debate.

About the house: It's a 3bd (easily can be 4), 3ba with a huge barn (old airplane hanger) that's been grandfathered in, built over the water with an additional bathroom and partially built ADU above w/ it's own meter.

I've been a renter for most of my adult life and this was the first time I wore the other hat as a landlord witnessing the tenants from a landlord perspective.  

If you can finance it 100% wit an 8% pref to equity partner and still cash flow at a level that allows setting aside CapEx - it's a deal.

BiggerPockets is definitely the place to find and vet those partners (as you are witnessing with this post)!