Mandurah's Bar Therapy has been damaged by fire.
The blaze was first reported about 5.20am on Tuesday at the heritage building on Mandurah Terrace.
A Department of Fire and Emergency Services spokesperson said the fire was brought until control within 25 minutes and fully extinguished by 6.20am.
It is understood the building has sustained significant damage.
The cause is not yet known.

Mission Australia celebrates 25 years of supporting young people through Mandurah Reconnect program
'Mad Eagles fan' wins $6 million Lotto prize
Mandurah woman loses everything in house fire
Gift card scams surge past $1 million prompting urgent warning from Consumer Protection
Secret Harbour by-election attracts record 16 candidates
Major party candidates locked-in for looming Secret Harbour by-election
Comet Bay Primary to offer full-time kindy from 2027
North Dandalup crash claims life of driver
Date set for Mandurah's Town Ward Extraordinary Election