There are many possible options to sort out your rates arrears from short-term solutions to restructuring the way your finances are set up, so that events like this don’t happen again.
Rates are viewed by mainstream lenders as a regular commitment just like loan repayments and most won’t refinance them if they are in arrears.
Refinacing your home loan to consolidate your rates and other debts will usually solve the immediate problem, you might even end up paying less per month overall.
There are solutions using non-bank lenders, even if the council have lodged a judgement against you. Keep in mind that the council has the power to foreclose on your property to reclaim rates arrears!