Although I look at "city data," something like the comps you have would be a bonus. 

My footprint is significantly wider, but I basically did a multi sequence drop to companies that met my criteria.I'm sure your next questions will be, where did I get my data and how come so many people responded?

Those HUD numbers are from statistics taken from lots of housing units all over the place, and no single one of us could gather that data from our own units. 

In some counties you can get this data for free off the county recorder's web site.  

How did the timing work out for how long you could consider the data before having to put in an offer.  

No offense meant to @Jeremy T. but I must respectfully disagree about the usefulness of that City Data, Allegheny County Crime Map.

Thus is also called 'mining your data' and I'll work on these in batches when the phones get quiet or the Dealflow pipeline is thin.

When Breaking down Raw data when it comes to delinquent taxes you will begin to understand how to read your info. 

You can get that data from property managers in the area, or doing research using vrbo.net or other sites to see how similar properties you are looking at are booking up.Also - don't forget to use the @name tag so people know your asking questions, I just happened to see this one because I have a "vacation rental" keyword setup...

To tap into the data, hire an appraiser and pick his/her brain about the market you wish to enter.