Delinquent tax rolls - Finding properties behind on taxes DFW

[Joseph Newton]

I am wondering what the process looks like to find properties that have back taxes owed. Specifically around the DFW area Texas.  So Dallas, Collin, Denton, Tarrant Counties ect. 

I am guessing it is done either at the Appraisal District or the county tax office. Do I have to look up specific properties or is there a way to search properties that are behind on their taxes by X amount or time? Can this be done online or do you have to do it in person (I'm sure this probably depends on the area/county/city)? 

Are there any blog post about this on BP? 

Also, what other questions should I be asking in regards to this?

Thanks!

Joe 

p.s. would there have been a better forum to place this in?