You have to make a declaration with the tax collector that you will be paying the taxes, and you must take possession of the property to the exclusion of the actual owner. It takes seven consecutive years of adverse possession to become the owner of the property. If the current owner comes in any time during the seven year period, that owner can have you thrown off the property. If your are unsure of your rights, you should consult an experienced real estate lawyer in your area.
Disclaimer: This answer is provided for informational purposes only, does not constitute legal advice, and does not create an attorney-client relationship. Actual legal advice can only be provided after completing a comprehensive consultation in which all of the relevant facts are discussed and reviewed.
You cannot legally get around the municipal requirement for permits. If you do not follow all the steps for the adverse possession (which are quite a few), including the filing of the proper documents with the tax collector, then you may find yourself being considered (and treated as) a trespasser.
Carol Johnson Law Firm, P.A. : (727) 647-6645 : firstname.lastname@example.org : Wills, Trusts, Real Property, Probate, Special Needs: Information provided here is anecdotal and should not be relied upon or considered legal advice. Every matter is different and answers given here are general in nature and may not reflect current Florida law at the time you are reading this posting. Please contact me if you feel you need additional assistance with your matter.