Goods donated to victims of January's devastating blaze in Yarloop, WA, have been stolen from the town's volunteer bushfire brigade headquarters.

Fire authorities said they were disgusted after thieves broke into the shed in Cookernup and stole items destined for locals and damaged firefighting equipment.

The perpetrators broke padlocks on sea containers full of gifts for locals wanting to rebuild their homes that were destroyed by the fire which killed two people and reduced 181 buildings to rubble.

The Shire of Harvey's chief fire controller Phil Penny said the community was furious.

"This scum, and that's probably the most polite way I can describe them, has come in and just helped themselves for their own cause," he said.

"There are a lot of locals around here that I guarantee their sights have been adjusted and the barrels have been cleaned."

The president of the WA Volunteer Bushfire Association, Dave Gossage, described the burglary as a low and disgusting act.

"Words cannot express my disgust that there's low-lifes out there would do something like that," he said.

"It's a very sad indictment on individuals who stoop to such a low act as to attack fellow community members assets."

"If they've done damage to the equipment that they can't actually respond to house fires and the like, it's certainly going to throw a spanner amongst the works for volunteers to be able to protect fellow citizens.

"We're absolutely appalled and hope that these perpetrators are brought to justice as soon as possible."

Local police are investigating.