There are charts and data for each sales market be it homes, rentals, apartments, and even self storage! 

At a minimum a book-keeping/accounting service should handle -* System set-up (Quickbooks is a fine solution for most)* Data entry/general journal log keeping* Month-end reconciliation* Quarterly report* Quarterly tax filing (Payroll, etc.)* Yearly tax returnsA full service accountant should also handle -* Accounts payable* Accounts receivable* Weekly/biweekly reporting* Project reportingOne of the biggest regrets I have is not having gotten a good book keeper earlier in my business.

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.  

As they never get enough steam going to make a living.However I do think you can't underestimate the value of access to the MLS.. especially now with other sites getting kicked out of the MLS data bases.

JenniferI get my info from list source or melissa data.

No more legal size paper, margins for recording data, top, bottom and sides, by the time you have the body of your document, well....few will be on page.

What is the easiest way to "scrub" the data.