Others have mentioned the DC Property Tax database, which is good.But if you want to go a bit further, especially if you're going to do a buy & hold, go with DCRA's PIVS Application- http://pivs.dcra.dc.gov/PIVS/Search.aspxI use it for my RE activist blog to see if there are any recent permits on vacant properties, also if there is more than one owner, that shows up too.

Welcome to Bigger Pockets community...perfect place to get connected and learn new things.I invest mainly in Western suburbs and always wonder about Lockport area.

A City Council and Mayor that allow mobs of activist mobs run wild while decry regular working people.

@Travis FairbairnSorry, didn't see this post until now.On the Fort Worth side try Nick Poulous with NewWestern.comAlso try:webuyhomesinusa.comrisedfw.comRandy with homewoodproperties.comI haven't bought properties through any of them, but between New Western, WeBuyHomesInUSA, and Homewood, they keep my inbox full. 

I'm in western Michigan and work with quite a few investors, flippers, STR owners.

Megan, I live in Bellingham, and the city has the exact same ordinance, despite Western Washington University literally being in the middle of town.

Alex, I'm looking into single family to start, western suburbs specifically.

That doesn't mean it is unfair to you.I'm from western NY.  

I really feel I got a great deal and I am in an up and coming neighborhood of Chicago (Western area of Logan Square).

. - If you're looking for cash flow in Massachusetts, you'll have a better chance of finding it in Western MA.