Fla. Civ. P. Inv. Comm. Sex. Vio. Pred. 4.060
Venue for bringing a petition under Part V, chapter 394, Florida Statutes, shall be (1) in the county where the respondent was last charged and convicted of a qualifying offense; (2) if the person has never been convicted of a qualifying offense in this state but has been convicted of such an offense in another state or in federal court, in the county where the person was last convicted of any offense in this state; or (3) if the person is being confined in this state pursuant to interstate compact and has a prior or current conviction for a sexually violent offense, in the county where the person plans to reside upon release or, if no residence in this state is planned, in the county where the facility from which the person to be released is located. If it should appear at any time that the action is pending in the wrong county it may be transferred by motion of any party or on motion by the court.
FL. Civ. P. Inv. Comm. Sex. Vio. Pred. 4.060