Facing the Ballarat Magistrates' Court while on remand on Monday, Brett Dawson, 40, was accused of repeatedly phoning the mental health services following the breakdown of his relationship and his possible eviction from his property.

Investigators from the Victorian Fixated Threat Assessment Centre, which monitors extreme ideologies, radicalised individuals, and specific grievance-based threats, identified Dawson after the frequency and severity of the phone calls escalated this month.

Dawson allegedly made several phone calls to staff at the mental health service, specifically naming two employees, and said he said he was prepared to use gas bottles to blow up the building, and himself - he said he would "destroy you", and would "slit their throats".

He was described as being agitated and aggressive towards staff, including receptionists who took his calls - he allegedly said he would "spill (his) blood all over their desks", and if he did not receive answers and have his problems "fixed" in 15 minutes, he would "blow (himself) up".

He allegedly repeated he was suicidal and homicidal over the phone, adding he was "planning to attend the main office and blow himself up" and "drive over the psychiatrist and hit them with his bullbar", according to the police informant.

His property was "booby-trapped", and police and ambulance officers would be injured if they attended - instead, he asked for the employee to attend so he could "punch his (expletive) skull in".

He was arrested on May 10, and admitted phoning the mental health service but denied threatening anyone but himself.

The court was told Mr Dawson had previous grievance-based convictions from 2009.

He called his sister as a witness, who said she did not believe he would have made threats to blow up the service up - instead, as he was using gas bottles at home, he could have been misinterpreted.

Magistrate Gregory Robinson denied Mr Dawson's application, and said while he understood there could have been misinterpretations and he needed psychiatric help, the risk to the public was too great.

"Nothing has been put before me to ameliorate that risk to a reasonable level," he said.

He will face court again next week.