Firefighters work to extinguish a fully engulfed house fire in the 9400 block of 3rd Avenue in Cary Friday evening. | Photo: Tyler Tobolt / Lake and McHenry County Scanner

Fire officials say a family dog is unaccounted for after a fire heavily engulfed a home in Cary and left the structure a total loss Friday evening.

The Cary Fire Protection District responded around 10:53 p.m. Friday to the 9400 block of 3rd Avenue in Cary for a report of a residential structure fire.

Firefighters arrived within five minutes and found a small single-story residence fully engulfed with flames and smoke showing from all sides, Cary Fire Protection District Spokesman Alex Vucha said.

Vucha said the area lacks fire hydrants and a coordinated effort began to transport water to the scene.

Firefighters work to extinguish a fully engulfed house fire in the 9400 block of 3rd Avenue in Cary Friday evening. | Photo: CFPD

Water supply operations were established at the intersection of Klasen Road and 3rd Avenue.

Firefighters quickly pulled hose lines and brought the fire under control within 20 minutes.

Overhaul and investigation continued for an additional two hours after the fire was extinguished.

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Four people reside in the home, which was unoccupied when the fire began, Vucha said.

Firefighters work to extinguish a fully engulfed house fire in the 9400 block of 3rd Avenue in Cary Friday evening. | Photo: CFPD

The home is considered a complete loss and initial damage estimates are believed to be $200,000.

A family dog remains unaccounted for as of Saturday morning, Vucha said. No firefighter or civilian injuries were reported.

Initial investigations indicate the fire began in the rear of the home.

The fire is not believed to be suspicious in nature but remains under investigation by the Cary Fire Protection District.

Firefighters from Fox River Grove, Algonquin-Lake in the Hills, Nunda Rural, Barrington-Countryside and Wauconda assisted at the scene and covering Cary’s fire station.