Direct Mail Farming Question - Working Smarter, not harder

[Craig Koehne]

Hello All, 

I am investor with one deal under my belt, and want to look to start a direct mail campaign. I live in Katy, TX a suburb of Houston TX. 

I have 2-3 neighborhoods that I want to target in my area. My idea was to find a complete list of all of the addresses in these neighborhoods, and then find out which houses have large equity %'s as to target them. 

I know i can find each address manually and then look up the tax records to see the mortgage history, but my question is if there is an easier way to do this, as this will be tedious. Not that I'm not willing to do it, just like to work smarter, not harder. 

My wife does have her real estate licence if that helps, so we do have access to the MLS.

Thank you in advance for any and all assistance. 

Craig