Mahwah firefighters, assisted at the scene by their colleagues from Ramsey and Suffern, doused the 2:30 p.m. blaze on Alcott Road, less than a half-mile from Airmont.
No serious injuries were immediately reported in the fire, which went to three alarms for coverage.
Firefighters contained the blaze to the master bedroom.
Click here to follow Daily Voice Franklin Township and receive free news updates.