Maryland Real Property Section 14-306

      (a)      If any part of the lien property is located within another county and the petitioner desires that the broker's lien attach to the lien property in that county, the petitioner shall file a certified copy of the docket entries, the court order, and any required bond with the clerk of the circuit court for that county.

      (b)      A broker's lien attaches to the lien property in a county at the time the documents required to be filed under subsection (a) of this section are filed with the clerk of the circuit court of that county.