At approximately 4:00 pm on Saturday afternoon, Greenwich Fire Dept units were dispatched to 45 Londonderry Drive for a reported structure fire.
A Facebook post on the Greenwich Professional Firefighters Facebook page, while en route the dispatcher reported they were receiving multiple calls.
Units arrived to find heavy fire through the roof of the house.
The occupants of the house were not home.
Mutual aid from several towns was called for tankers and station coverage. The nearest fire hydrant was about 2,000 feet away.