Hi Ann
Michelle is on the ball (though different mailing addresses would not be an issue).
Section 712(2) is relevant (All rates and charges payable by the same person, whether in respect of the same or of different land, may be recovered in a single action.):
http://www.austlii.edu.au/au/legis/nsw/consol_act/lga1993182/s712.html
Regards
David
