Corrections officers from adult facilities will improve safety for Banksia Hill's staff and detainees, allowing Youth Custodial Officers to focus on rehabilitation.
"This is our number one priority because once the facility is safe and secure, we will be able to properly engage the young people in rehabilitation, education and positive activities," Premier Roger Cook said on Thursday.
"We know there is no quick fix. We are dealing with the most complex situations in the corrective services space."
The new plan will also see Aboriginal mediators appointed to assist with incident de-escalation and culturally appropriate medical services delivered through an Indigenous health provider.
A paediatric medical research institute will be contracted to provide expertise and advice on Fetal Alcohol Spectrum Disorder (FASD) and other neurodevelopmental conditions to improve the care provided to detainees.
The infrastructure review will investigate whether Banksia Hill remains fit for purpose and if improvements or additional infrastructure are required to meet long-term needs.
Legislative changes will be introduced to allow prison officers to be employed at Banksia Hill. They'll undergo additional training and need working-with-children checks.
Law changes to enable youths in detention at Banksia Hill who reach the age of 18 to be transferred to adult prison are expected to be passed by state parliament this week.
Indigenous leaders have been consulted for advice about the new plan following a more than 12-hour riot in May that left a damage bill that could reach $30 million.
"If we are going to improve the situation, we must get the basics right first," Mr Cook said.
National Suicide Prevention and Trauma Recovery Project organiser Megan Krakouer was pleased by some of the new measures but said others were a backward step and more needed to be done.
"I agree on Derbarl providing health care but it has taken too long to get Telethon to oversee neurocognitive assessments," she said.
"Health welfare is just a beginning, more guards are not, and a second youth prison would be disgraceful."
There were 459 assaults on Banksia Hill staff in the 12 months to June.
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