Personally, I think leveraging the expertise and experience of others is critical. 

I also speak openly about underwriting investments deals and criticize my wifes spending habits so they understand money.

Notice should be either by mail (Certified, Return Receipt Requested for critical issues), email (if Tenant is normally responsive) or posting on their door ( I tape a full page notice across from the door to the door jamb so no one can enter or leave without disturbing it.

The first selection (the most critical one) is based on the goal of getting off and staying off the corporate treadmill.

Aloha,I have not seen the BP spreadsheet, but here is a link to a several useful Annual Property Operating Data sheets for determining critical values:https://rpoaonline.org/annual-...

I know it's not truly an apples to apples comparison but where interest rates are at, having roommates is critical to supplementing the mortgage and lowering your living expense. 

People will always be ready to criticize you when your plans don't fit their idea of what someone "should" do.

They will not look critically at their own process for their errors or omissions. 

Here is where it is critical to know the history of the seller extremely well prior to beginning any negotiations.

This is critical since it is presumptuous of the IRS to consider rental activities not requiring day-to-day involvement.Spouse Participation: Remember, your material participation in an activity includes your spouse's material participation.