Firefighters believe discarded smoking materials were responsible for a flat fire in Sheffield.
The fire on Dyche Road, Jordanthorpe, broke out in the early hours of Saturday.
The occupant of the flat, a man in his 30s, escaped unharmed.
That night a man, woman and child were led to safety from their home after a fan heater caught fire.
The fire broke out on Driver Street, Woodhouse, Sheffield.
On Friday night a kitchen on Markham Avenue, Carcroft, Doncaster, caught fire because of a wiring fault.
Over the weekend firefighters in South Yorkshire dealt with a clothes recycling bin set alight on Idsworth Road, Firth Park, Sheffield; a removal van found burning on Effingham Street, Attercliffe, Sheffield and a shower room extractor fan on Renton Road, Hyde Park, Doncaster, which started burning after developing a fault.
A car found engulfed in flames on Cumwell Lane, Hellaby, Rotherham, was set alight in an arson attack along with a pile of rubbish inside the disused Kirkhill Resource Centre, Lowedges Road, Lowedges, Sheffield.