Bruce Gardiner, the council’s prosecutions co-ordinator, said that during a December 2022 interview with council prosecutors, Bedford claimed he had been overseas and “was too busy to deal with the issue” when works continued despite the council’s warnings for them to stop.

“When it was put to him that his tenant was living in a house that may be structurally inadequate, he repeated that he must have been too busy to deal with it,” Gardiner said.

The court heard the council requested receipts for contractors used for the works, but Bedford told the council he paid them in cash.

Defence lawyer Sam Bird said Bedford had no prior convictions, was a world-touring audio engineer and should not be judged as a property developer with an extensive knowledge of building requirements.

“This is a first time. He understands now, in no uncertain terms, what is required if he was to invest, or his wife’s company were to invest, in properties and decide to renovate them,” Bird said.

“It was a project that ultimately required permits but didn’t require any rectification [after the illegal works].”

But Gardiner claimed it was unlikely Bedford was unaware of the legal requirement to obtain building permits before undertaking structural work to a property given he ran a bricklaying company for a decade.

“I submit that one could not own a bricklaying company for 10 years and be engaged in building and be unaware of the requirements when taking walls out of the insides of houses,” the council’s lawyer said.

“The aggravating circumstance is that the accused were found to be in breach of the legislation and were ordered to stop work for safety reasons, and they continued to work and put a tenant inside the house for a period of 12 months, and that, crucially, aggravates the offending in my view.”

Magistrate Charles Tan issued two fines – one of $20,000 to Watson’s company and another $5000 penalty directly to Bedford - without conviction. The maximum possible penalties for the charges against the company were $220,000 while the maximum for the charge against Bedford was $85,000.

“These matters involve public safety, therefor the size of the fine that I impose has got to reflect the importance of general deterrence ... certainly to communicate to people the importance of obtaining a building permit before such works that involve people’s safety are carried out,” Tan said.

The court also heard that Watson’s company purchased a second investment property nearby in Frankston, for $1.35 million in January 2022.

Watson grew up on the Mornington Peninsula and is now a global star, a multiple ARIA Award winner and her music has been streamed on Spotify more than 1 billion times. She married Bedford in March.

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