Then take that data and skip trace it for numbers email etc.

It provides valuable market data that offers insights, unlike the free version that offers none.

If there's a hole, it may be a red flag.b) sensitivity analysis: I examine all the assumptions, and make sure I can live with the worst case scenarios.c) "Stall and see": if they are getting money over multiple years, and there is no penalty for investing later, I would usually wait so I get some real performance data, versus having to look at theoretical pro forma information.d) Recession stress test: I will not invest in anything, until I subject it to recession level stress and see if I can live with the result.

I have several opportunities to snag up a self storage complex and a 18 unit apartment complex on creative financing .

If you have the data easily available, can you give us cash flow figures throughout the 13 years? 

There are a lot of market-specific issues you'll have to grapple with and also, there are plenty of landmines in MFR on its own in CT that you'll have to be ready for, in addition to the nuances and complexities of developing something like this.

Which this is basically what I do now and immediately block and report.I really wish I knew where they got my cell phone number from...as attached to my rentals.. as I'd tell that agency to stop selling my data!  

Consider Hiring a Legal Expert- German property law can be complex.

Quote from @Avani Patel: Hello, it is really time consuming for me to analyze each property by manually entering its data to calculate the return. 

That puts any of their data sets into serious question.