Then run the same report, but this time I select the "NOT" flag in the Special Circumstances field, which returns data only from listings that have NONE of those previous keywords. 

@Kevin TolentinoWelcome to BiggerPockets, a place to interact with a vibrant REI group, learn the real estate business and language.It doesn't matter if you are young or old, totally new or need to build upon your experience.Yes, you have just announced a commitment to the thousands in this community aboutyour seriousness regarding REI and have taken this bold step to affirm it.Your time on this site with the BiggerPockets community will be well spent and can be financially rewarding if you so desire.You are here at the Forum, but, should raise your mouse to the top and explore the otherheadings displayed.Don't get overwhelmed by the massive amount of data archived on this site.Simply, bone up on the areas that you need to expand knowledge in such as, Forums,Marketplace, Learn, Network, Analyze, Resources.Feast on the Podcasts, #askbp Podcasts, blogs, webinars and the myriad of bookrecommendations.REI books suggested by BPershttp://www.biggerpockets.com/renewsblog/2013/04/14/best-real-estate-books/?

The attorney was able to get the information he needed from a data sticker on the mobile home.  

@Chris Bojanowski I gave some feedback on the past results of the Will county tax lien auction for the last few years on another thread; here.I did some playing with the results data again and this time I did the average rate of return by "Building Type" as listed in the county records.

Since this is the case, how are firms able to collect pre-foreclosure data in Texas?

Local Market knowledge will be the key to success, although nothing substitutes hard factual data; but for example you can know right away that a home in a certain part of town typically sells for a certain amount, which is helpful right off the bat.  

Do not operate off them- either the for sale or the rent data.For Sale Data Accuracy– I have found that this data tends to be more outdated than realtor.com.

There are cities that probably cash flow better, are a bit more affordable than another but if you look at the data, the migration of people, company and jobs to southern and warmer climates continues unabated.  

Once you have the data then run the numbers (including inflation) to see how long it would take for you to accumulate $100K from the property.  

You could go to a list broker, like Melissa Data and get the names of investors and then direct mail to them.