sales comp for a duplex

[Anna Warren]

I have a newbie question again! I just got a call from a guy who wants to sell his duplex. I dont have many details on it as of yet (going to meet with the guy tomorrow), but I like to have an idea on what I may be able to offer, if anything at all. I know how to pull the comps on a sf, but I dont know where to get the info for a duplex. I dont see that any duplexs have been sold in the last few months. I am planning on wholesaling this property.

Thanks in advance for any advice or input!