Valuing three 4 unit buildings

[Brian S.]

I listened to @Brandon Turner conference call last week regarding multi-unit buildings. I met with an operator that has three 4 unit properties (fully rented) this morning. The electrical was updated, plumbing was updated, roof on 2 of the buildings are newer, new windows with lifetime warranty on all properties, each property has coin operated laundry, and these properties are fully rented. We went to lunch and did a quick overview of the rent roll, taxes, etc. I plan on using the BP calculators but besides that are there any tips on valuing and making an offer to purchase all three buildings? I appreciate any insight from BP... up to this point I have purchased 7 Single family houses in a short time frame so I'm new to Investing and this would be my 1st attempt at purchasing multi-unit properties! Thanks, Brian Sr