If you have your data on the purchases, organize it into Form 8949 or an equivalent spreadsheet.

If you just need to get the poly off, a buffer may work.  

You're data isn't always the first thing on their mind when they decide to fold.Backup, backup, backup. 

I understand that it is pulling a lot of data, but most of the data is garbage, so you guys need to work on a way to pull in good current data.

As an agent I use NTN, but prior to getting my license I used to use Experian as they have a tool for landlords to use, which is nice since you're getting data directly from credit bureau.I don't remember if they did a criminal check though.

The population has increased by 5.5% from 2010 to 2017 according to census data.3.

I wouldn't count on the proforma to provide you with realistic data. 

The owner seems to be way off but your valuation seems off too unless Im missing some market specific data like a real low cap rate.

i know theres different goals when making a purchase so is general and not limited to flip or rental etc...much appreciated if you can please list your main items you use and link any tools or sites that are useful to evaluate those items.ive read thru the BP and many other resources and theres so much data its honestly a bit much,  just looking for a simplified checklist and then can drill that down to learn more.thanks!

@Royce TalboI just got off the phone with them, they basically said they have multiple sources of data that they use for negotiating with the tax assessor and they wouldn't go into detail.