To become a member, you must pledge to a strict Code of Ethics and Standards of Practice. 7.

No pealing paint gfci per code windows no leaks in roof etc. 

Also, encumbrances that come from code violations, water/sewer bills, or any other special assessment will go along with the property and does not get wiped out from a tax foreclosure. 

Do I just choose random streets all over town, or search popular last names, or just choose a particular zip code and stay within it until I get a good amount?

Long story short, I have to do more construction and alterations int he form of sprinkler systems and fire alarms to make the property compliant.As difficult as this can be sometimes, I feel blessed to own my own triplex.

And while you cannot 1031 into your next primary residence immediately, there are provisions in the tax code to later convert a 1031 investment property into your new primary residence. 

The SIC code, the history of purchase etc.

Are there other liens (other than taxes), code violations, mortgages, judgements, etc?

Some other good reads are:Performance Anxiety by Gordon MossTurning Distress Into Success by Fuquan BilalInvest in Debt by Jimmy NapierThe Art of Investing in Distressed Mortgages by Sherman Arnowitz The Banker’s Code by George AntoneThe Wealthy Code by George AntoneFour Step Guide to Private Lending Profits by Lee Carney Harder Working Money by Jay Leigeber

This is mostly (here at least) a matter of knowledge of building codes.