Those numbers don't make a lot of sense. Wouldn't 4400 homes generate something in the vicinity of 50 million dollars in annual property taxes?
[1] http://brisbaneca.org/sites/default/files/ccBaylandsHearing_...
This study [1] should give you an idea: the median residential property operates at a net loss to the city at a revenue to expenditures ratio of 1:1.15 whereas commercial operates at a huge net gain at 1:0.27.