Firefighters in Normal dealt with heat indices over 100 degrees in putting out a basement fire on Blair Drive.
Firefighters were called out shortly after noon Wednesday when homeowners flagged down a passing motorist.
The fire department reported deceptive smoke conditions led to an initial belief the flames were in the attic instead of the basement.
Damage to the one story ranch in the 400 Block of Blair Drive is estimated at more than 130,000 dollars, though firefighters say that may rise when investigators can gain access to the basement.
Investigators continue to look for a cause for the fire.