Hi there. I really would love to tell you that there is a "magic" number, but honestly when you are bidding blind there is not. What I can tell you what has helped me is this. Have your agent (presuming you have one, if not, I would be happy to just pull the history for you--No I do not want in on your deal, just trying to help) pull all history of property. Has it sold before? Is this a foreclosure? What has sold around this property in the last 7 months and put all of those numbers together. My Philosophy is when bidding a Multi , it isn't so much what the asking price is...That could be anything...It is more of what is the most you are willing to pay for it. I know that is vague, but it is true. You set a number in your head that you do not want to go over and bid there. I would rather put in my best bid, the highest I am willing to go, and leave it there. You will never know if you over bid (usually) but at the very least you will be comfortable knowing that you did your best, and if you lose to your best, then that is ok. But if you do not bid your best....And you lose, you will always carry around that "If I only would have gone $1K more. Does that make sense? Best of luck to you and one last tip. Don't ever assume that because an asking price is such and such and you put a 5K over ask and expect that should do it...It doesn't work that way. I have seen bids go WAY over. But in what works best for you! And you can't lose. (The house maybe, but not what works best for you). Take care and do let me know if you need something pulled I have a little time today, but not a ton.