purchased via sale agreement. small builder and its 30 flat scheme in vadgaosheri. PMC told that like electricity meter transfer property tax transfer had to be applied with fees and documents AFTER PAYING ALL THE ARRIER PROPERTY TAX.
While from your question it is not clear if you have paid for the property and still the property is not transferred in your name or if there are any other legal documents that validate you being the owner of the property. However, its in your best interest to get the property under your name before you pay any taxes.