Criteria when considering a property acquisition investment strategy on tax lien

You have to consider the following points:

1. Chances of the owner paying the lien
2. How long you are happy to wait to forclourse the property
3. Other property taxes that will have to be pay in the future
4. How likely are you to foreclose the property
5. Does the property stand in a good area with potential growth? 
6. Does the property need repairing?
7. How much is the property worth.