Boiling Springs firefighters responded early Saturday to a fire at Huntington Downs Apartment on Roper Mountain Rd. in Greenville.
The call came in at 6:45 a.m.
Fifteen units were impacted by the fire or smoke damage.
There are no injuries, but one firefighter had to be treated for exhaustion.
The Red Cross assisted victims with food and hotel rooms.
The fire department says the fire started on a back patio in the complex.
The fire marshal and the insurance adjuster will be at the complex Monday to rule on the cause, but it has been ruled accidental.