I'm not a data scientist or statistician. 2. 

It should be similar to looking at "sold" data in Zillow.

But it is becoming way too tedious and time consuming to input all that data, as there always are so many individual expenses, even for just 6 units. 

I normally access most of this sort of data from the U.S.

Show data?

Double-check that they have included insurance, vacancy and maintenance taxes, etc. whatever assumptions the company makes in their pro formas, you need to get the data that backs those up - what are they based on?

Additionally, in compliance with local data retention policies, originally signed documents must be held for three years in the event evidence is requested again from the court.

Actual data!

The fact of the matter is that I have stone cold data that says: you will be a lot more successful NOT targeting absentee owners.

@Nik Batra depends hows the data is determined.