A Mosman Park jazz cellar that will host musicians from the WA Symphony Orchestra and Perth Jazz Society must display signs banning bikie gang colours after intervention by police.
Conditions on the small bar licence granted to Rodney's, which is yet to open on Stirling Highway, is the latest case the State Opposition has raised in its push to cut red tape and police time devoted to the hospitality sector.
Tropical Life Pty Ltd applied for the licence to create a themed small bar with a capacity of 120 focused on "rare music", comfort and atmosphere.
Its application said music would be limited to "jazz, blues, soul and cocktail music from the 1930s to 1970s" featuring live acoustic performances from prominent professional musicians to a seated audience.
It predicted the "strict music policy" would attract a "discerning clientele" aged 30 to 55 and told the Director of Liquor Licensing a "smart casual" dress code would apply.
A petition with 435 signatures and 15 letters of support were lodged with the application, which attracted a solitary objection from a local household concerned about parking.
WA Police intervened on the basis "public disorder or disturbance" would likely result if it was granted without conditions.
Conditions police recommended included responsible service of alcohol, restricted trading hours and "dress standards regarding outlaw motorcycle gangs".
The licence conditionally granted in October included an edict to display signs at each entry barring anyone with clothes, tattoos or jewellery indicating membership of gangs including Coffin Cheaters, Club Deroes and God's Garbage.
Labor leader Mark McGowan said winning the lottery was "more likely than bikies descending on Mosman Park to appreciate 1950s jazz".
The Department of Racing, Gaming and Liquor declined to answer why the gang condition was deemed necessary.
A police spokeswoman said the gang condition requested was consistent with its position on bikies wearing identifiers in licensed premises.