A fire broke out in a villa outside Ornäs in Borlänge municipality shortly before 8 p.m. on Tuesday evening.
Rescue services were alerted along with ambulance and police to the scene.
Kristoffer Niwong at Räddningstjänsten Dala Mitt described the fire as fully developed.
Personnel are working on external extinguishing to protect vehicles and nearby buildings.
The ambulance left the scene at 9 p.m. without transporting any injured person.