WOW some of the advise on here is priceless... CALL AN ATTORNEY, really.
BEFORE YOU CALL an Expensive Lawyer read this...
Before calling an attorney (usually they want an upfront fee) visit link below and get legal insurance and consult with an attorney for free. (I use them for all me real estate dealings FREE consult)
My EXPERT ADVISE...
Don't call a real estate lawyer first (save a lot of money and do one of the following)
1. if you have paid for foundation repairs deduct from rent with letter and receipt to landlord (per landlord tenant guide)
2. depending how delinquent taxes are...do nothing. CALL ME FOR more details.
3.get legal insurance and consult with a RE Attrny for free