Frontline policing extended across Perth

West Australian police minister Liza Harvey has announced the expansion of a new policing structure.

Frontline 2020 will be implemented across the central and northwest districts, joining the south and southeast districts that are already operating under the plan.

The scheme allows the community to connect with their local police teams via mobile phone, community events and social media.

Ms Harvey said a new website enabled residents to search for their suburb and find a photograph of their local senior officer, the suburbs under their command and a mobile phone number for their local police team.

"During the trial of the new model in the southeast suburbs, local officers developed a stronger relationship with small business owners, residents, local community groups and government departments, working with them to target trouble spots, and the results were extremely promising," she said.

The southeast trial saw an 8.4 per cent reduction in crime, while the number of callouts to the 20 worst homes almost halved, Ms Harvey said.

"Local police teams have been given the directive to focus on the crime in their neighbourhoods, while response teams will patrol 24/7, ready to strike when and where they are needed," she said.

Each district will have about 550 officers, a round-the-clock control centre and large detective teams, as well as the response and local police teams.

Ms Harvey has returned to work after the death of her husband Hal, 55, who died in October following a long battle with pancreatic cancer.