For multifamily, should I analyze numbers first?

[Donny Widjaja]

I've been looking at some multifamily (from 5 to 20 units) and practicing to analyze those deals with BP's calculator.

When I find a deal that fit my criteria, should I check for the real numbers from the seller first?  or should I do the inspection and appraisal first?

If you've have done some multifamily purchase, can you share what process did you take?  

Thanks.