Firefighters responded to fire at a three-story home in Thomaston that started while people were still inside late Saturday afternoon.
A blaze broke out at a house on Hill Road just after 3:30 p.m.
The residents were home at the time and reported a fire in the basement. It's not clear how many people were inside at the time of the fire, but no reported injuries were reported.
Firefighters brought the blaze under control by 4:54 p.m. Crews from Northfield and Harwinton provided mutual aid.
Thomaston police say the fire was fast moving and the house was a total loss. The cause is under investigation and crews were still on scene as of 7:40 p.m.
The Red Cross is providing housing, food and personal care items to a family of three adults affected by the fire, according to a spokesperson for the organization.
More information will be provided when it becomes available.