Most of the time I show people houses - they are most interested in the kitchens and the bathroom - if they don't like the kitchen - they usually don't even want to see the rest of the house - but if they don't like the bathroom either - its a deal killer.

@Adam Stanton I am a big believer in pricing anything just below the market, since vacancy is the ultimate profit killer.

If they haven't been spending money you can count on a bunch of deferred maintenance.One of the big killers is getting units rent ready. 

according to the article  the killer was a convicted felon in possession of a firearm

If it's any help, you can also check out this overview on how I close cash deals in-house.I know this is unconventional advice - but like Jason said (and as you're probably seeing from your own perspective), there are times when the closing costs can be a deal-killer in themselves.

Thanks, from what I can see it looks like a killer investment.

I was going to ask you about water because water bills are a cash flow killer and I would rather defer this to the tenant if I could.

@Charles Chang, Debt can be the killer in a stand alone NNN. 

BK by itself is not a deal killer for most HML's if there are adequate mitigating factors. 

Because I have a monthly cashflow goal for passive income, and also because I really like to see 18-20% COC (meaning that I'm getting really killer returns on my money, and also that I'm getting deals without investing a ton of my own money).