Crews responded to the split-level rental home, in the 5600 block of 134th Place SE in unincorporated Snohomish County near Silver Firs, at about 12:30 a.m. after receiving multiple 911 calls.
Another renter, a man, and his girlfriend, who was visiting at the time of the fire, safely exited the house after a smoke alarm sounded.
"He told firefighters the woman and her daughter were already at the window and he helped them get out," said Leslie Hynes, public information officer for Snohomish County Fire District 1.
The woman and her daughter were transported by firefighters to Swedish/Mill Creek Emergency Room as a precaution, Hynes said.
Another woman also lived at the house, but was at work at the time of the fire.
Firefighters from Snohomish County Fire Districts 1 and 7 responded and had the fire under control within 15 minutes.
"They kept the fire contained to the living room area, but there was heavy smoke and heat damage throughout the upper level of the home," Hynes said.
The damage left the house uninhabitable. The cause of the fire remains under investigation.
"We're grateful the smoke alarms woke the residents and allowed them to escape with only minor injuries," Hynes said.