Sorry about last post---The staff at your title agency had no experience with what you wanted so they had to call their attorney to check on it and, being an expert (hopefully) he/she knew how to do it.

Included some links, hope you can view it.https://www.biggerpockets.com/buy_and_hold_results...file:///C:/Users/staff/Desktop/Rental%20Property%20Calculator%20from%20BiggerPockets.htmlhttps://www.realtor.com/realestateandhomes-detail/...

I would then target the less prestigiously located units (basement, converted porch/carriage house) at the staff of the legislature.    

Been in diagnostic lab sales the past 13 years.

The manager predicts how much staff he'll need two weeks out. 

We are a state capitol so she gets lobbyists and other support staff for the legislature.

Tenants can file maintenance requests, pay rent, and chat with our staff 24/7.

the average if you have enough lab rats in the trend evens it out.The key is to watch the average and the median interact on a long view trend line

@Dawn Anastasi is right the percentage will never include maintenance, but most management companies will have some of their internal staff to do the jobs and bill you.

How about the 3 day lab or the coaching they offer?