I don't know where they get their numbers and I asked my rep and he said they do their own data analysis...so make sure and do your own research on the numbers they provide. 

I'm interested in knowing where you are getting your data from to project a healthy ROI opportunity for your Real Estate Investment. 

When purchasing income property there will be two sets of pro forma: one set using current (actual) data, and one set using new (projected) data.

You can make it your own with Zillow or other looking at the sold data.

In other words, the only way to move forward is to share sensitive data before you can even speak to someone?  

And nothing is guaranteed, I’m just trying to minimize it with right people ( property managers, contractors, brokers and learning data and markets in those areas.  

One of them could get hit by a bus tomorrow....That's 33% of your data.

There are lots of benefits - buying, selling commission, access to the MLS, access to better data, access to contracts and addendums, access to your broker for knowledge, the list goes on and on.

Without looking at data, it seems to be growing to me as I live there   

@Karthik NatarajanProps to you for doing your due diligence.In many areas, assessment amounts are adjusted upon sale of the property so it is NOT unusual and in fact it is quite common for property taxes to increase significantly for a new buyer.Absent any other data, I’d trust the calculator.You could also call the County Tax Collector or Asssesor to verify the information.Good luck.Arn