The short answer to your questions is yes, if a creditor receives a judgment from a Florida court (or a Florida court domesticates another state's judgment), the creditor can either ask the court to attach the judgment-debtor's property, or place a lien on it. A creditor may not seize a judgment-debtor's residence under Florida law.
See the Bills.com resource Florida Collection Laws to gain an understanding of Florida's rules for creditors, and the rights of debtors.
It is unlikely, however, that a credit card company would seize real property for an unsecured debt purely from a public relations standpoint. However, there is no legal prohibition from it doing so on an investment property.
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