Appraisals are "opinions" of value, it is not a precise science and as such, being the humans they are, appraisers vary in opinions.

Hi all, I know there’s CAP rates, ROI / NOI, 1% rules, but in terms of cold hard dollars, I’d be fascinated to know what you average real life positive cash flow per door is, on average, per month.

Some areas may have specific rules regarding the percentage of time you need to reside in the property.Remember that real estate investing is both an art and a science.

Appraisals are an art, not a science!

From that point, some sort of banking engine would need to be involved that was sophisticated enough to handle and understand trivial to highly complicated financial transactions.In any case, it would be fascinating to a small niche of people (myself included) so not too likely to become a commercial success.

Thank you for reading, I know this was a bit long, but it was fascinating too, right?

And that is why these "systems" are so bad.See in the world of data, science and engineering, 1+1 is always 2. 

Its not rocket science.

Just copy them and make money yourself....this is not rocket science :-)

But that's not all; another fascinating aspect unfolds.