Landlord Peter Austen said the pub - where the young princes supped pints during their teenage years - was left derelict after closing during the pandemic.
Scott Illman, owner of the Magpie and Crown in Brentford, said there is 'no way on God's Earth' he will be paying the fee, which under current legislation is £260 annually.
The two-bedroom, 82 square metre apartment on a main road in Sydney's south-west was listed last month for $690 - up from $480 when the grisly discovery was made in June 2022.
The landlord of the pub said to be the inspiration for Ambridge's local in The Archers says his business is under threat - because of Rachel Reeves' tax raid.
Landlord Martin Knowles has told the Chancellor not to try to enjoy a festive pint in the Marsh Inn in her Leeds constituency after he was hit with a £2,500 hike in business rates.