Share on Twitter The number of homes destroyed by an out-of-control bushfire in Perth's northeast has been revised up to more than 80 as firefighters battle flames fanned by strong winds for the fourth day. The massive blaze with a 126-kilometre perimeter has raced northwest across the city's coastal plain after destroying dozens of homes near the hills town of Wooroloo on Monday night. Estimates of properties lost started at 56 on Tuesday morning, but by Wednesday that number had grown to 71, with concerns more had been destroyed. Premier Mark McGowan confirmed those fears on Thursday, saying assessment teams had now identified 81 homes lost to the fire.