Keep in mind that each individual property has different utility bills (due to energy efficiency, possible water leaks, square footage, number of tenants, etc)  Calling the utility company will at least give you a starting point. 

is it a 1 year waiting period ?  

I would like to be as efficient as possible with my mailing list.

He kept the house as a rental for a period of time.  

In short, if you want a seller-carryback note created on or after January 1, 2014, if it is a private individual, trust, or estate, then ask them to sign an affidavit saying that they have not done more than three in a 12-month period and how many of them had balloons.

There are tax incentives for energy efficient windows if done on you primary residence, but does anyone know of any for rental properties?

We were able to find one that has 3 bedrooms in each unit, but of all the 4 plexes we saw on the market in a 4 month period, we only found 2 that had 3 bedrooms in each unit in the areas we were looking.

Most wholesalers try to tie sellers up into as long of escrow period as possible.I know real cash buyers that are still closing in 10 days. 

We are thinking about buying and building out one to put temporarily on a property we are developing and rent it via Airbnb until we are ready to begin construction of the quadplex on that part of our land, and have it for sale during that period of time.  

Finding out after 4 VERY costly evictions over a 24 month period that something needs to change.(1200+ per eviction for attorney, + 3 months unpaid rent each eviction = average 4.2k per eviction = 17k loss over 2 years - not including the thousands in damage that was done)Business evictions are heard one day every 2 weeks and take  3 months, privately held every day and take 6 weeks on average.