The fire was reported around 3:20 p.m. on Doremus Road in Mahwah just off East Crescent Avenue (which becomes Church Road in NY), barely 500 yards from the Airmont line.
Flames spread to the eaves and parts of the interior of the home as firefighters from several companies converged on the scene.
The fire then went to three alarms for coverage about 45 minutes later.
Assisting township firefighters were, among others, their colleagues from Suffern, Tallman, Ramsey, Upper Saddle River, Wyckoff, Hillburn and Monsey.
No injuries were immediately reported.
Click here to follow Daily Voice Parsippany-Troy Hills and receive free news updates.