If you owe an unsecure credit line and are currently unable to repay your debt can the bank foreclose on your condo property what is the worst that can happen?

The worst is you can be sued for the amount owed. If a judgment is awarded (which is likely) the creditor has various options for collecting. Most creditors dislike attaching real estate, as it is expensive and lengthy in process. They usually try to have other assets liquidated. Such as stocks, CD's, etd. Or ganishment of wages, bank accounts. Each state has a set of exemptions for BK which also applies to judgments won in lawsuits. What the creditor can do, depends on the laws of the state you reside in.