Both of Western Australia's main political parties will have announced safety pledges within hours of each other on Thursday.

WA Labor unveiled measures to combat crime and antisocial behaviour by providing $16 million over four years to the Safer Suburbs Safer Towns fund, the new name it plans for the Community Safety and Crime Prevention fund.

Opposition Leader Mark McGowan said the promise would reverse the government's "bad decision" to slash the existing fund and double the amount available to it currently.

"The program will provide more than $4 million per year in grants for local governments, not-for-profit organisations and Aboriginal corporations registered under the Corporations Act," Mr McGowan said.

The grants would be for community safety items such as CCTV and security screens for sporting clubs.

WA Labor has also guaranteed that Police and Citizens Youth Clubs (PCYCs) will remain open, assisted by a promised additional 500 police officers.

The Liberals also plan to unveil its own "important new safety and security initiatives" at 2pm (WST) on Thursday - coinciding with Treasury's release of updated financial figures for the state.

Treasurer Troy Buswell is expected to speak with the media shortly after.