"Borrowers who purchased the subject property within the past six months (measured from the date on which the property was purchased to the disbursement date of the new mortgage loan) are eligible for a cash-out refinance if all of the following requirements are met."

Very specific and measurable.  

Obviously, your screening criteria might be tricky, but you can measure income, longevity with prior rentals, longevity at jobs, eviction counts, felony counts, etc and arrive at a score using a formula. 

If anything a better metric would be measuring NOI over time. 

There are stringent background checks etc. 

Most windows can be replaced in about 5 minutes and all you really need is a screw gun and a tape measure!

Make a little spreadsheet and measure your risks.. 

The engineer came today and measured the cracks, inspected the overall condition of the house and told me they are not very big to be a concern.

Combining the two platforms will reduce listing duplication and data fragmentation, reduce online listing inaccuracy through ListHub's rigorous requirements, and provide more accurate metrics and measurement of online marketing across numerous websites.

With a formula and stringent due diligence these types of real estate purchases are very profitable.