The 2-alarm fire broke out in the 13000 block of 167th Ave NE in the English Hill neighborhood near Redmond around 9 p.m. Firefighters arrived to find flames leaping from the roof and called for additional help.
In all, fire crews from five neighboring agencies responded.
Investigators said the homeowner smelled something burning earlier Monday and unplugged the electronics around the house. The homeowner then left to pick up her kids and run some errands.
While she was gone, neighbors saw her home go up in flames.
"It started down below and then moved up into the second story and up into the roof," one neighbor said.
It appears fire has completely gutted the inside of this home from top to bottom. But luckily no one was hurt.
Investigators are still looking into what sparked the blaze.