If I were looking for possible owners in DC to try to get them to sell I'd go with cross referencing DCRA's vacant property (the ones with the bright day-glo "VACANT" stickers on them) lists with the DC property tax database.

There are stickers posted on the windows stating that the house is abandoned.

If you didn't get any lender credit because you paid cash or for some other reason, you could be seeing sticker price of the closing costs. 

The only expenses that the owner said he had was insurance $800/yr, taxes $550/year, registration stickers $300/year.  

I'm going to ask @William 'W.J' Mencarow to put a special sticker on BP attendee's badges so we can find each other!  

After purchasing our first two rentals, we tried to buy our own house 30 mins south of SF, only to get the sticker shock of $800K for a 2bed/1bath, 1200 sq. ft, 1950s house. 

What a great idea @Alex, do you have stickers saying the house has security as well?

I hope your sticker shock isn't too bad and I hope you'll come to some of our local meetups when you're here.

Many Chinese made lamps will have stickers that say "60 watt maximum".   

Also as an added bonus, there is a sticker on the exterior of the property stating that my local town building inspector's office has deemed the property as "unfit for human habitation..."...not sure if this is common practice or a red flag but will have to dig into this one a little further.Any help you guys can provide would be greatly appreciated.Thanks!