Firefighters were called to a derelict van blaze in Rossington.
Firefighters arrived at the derelict van fire in King Avenue, Rossington around 4.56pm on Friday.
Smoke spread to spread to a nearby garage and two neighbouring properties.
Two appliances from Doncaster attended.
A fire service spokesman said: “The large derelict van was deliberately ignited by youths seen running away.”
The cause of the fire has been logged as deliberate.