Metropolitan Fire Service (MFS) spokesman Nick Stevens says smoke alarms saved the lives of the people living in a block of units heavily damaged by fire overnight.
Four of the seven units on Eleanor Terrace, Murray Bridge were gutted by the fire, their roofs caved in; the other three were damaged by water and smoke.
But Mr Stevens said none of the units’ occupants had been injured.
“You definitely want working smoke alarms to activate so it gives you that chance to get out,” he said.
He said multiple people had phoned 000 around midnight.
It took 32 MFS and Country Fire Service firefighters half an hour or more to control the blaze.
They remained on the scene until about 2.30am.
“A lot of people lost a lot of things,” he said.
“I feel for them in this community.
“We’ll do our best to support them and get some of the essentials they need.”
The fire is not believed to have been deliberately lit, though no exact cause has yet been announced.
A unit has been destroyed by fire at Murray Bridge.
At around 10.40pm, MFS crews were called to the fire at Eleanor Terrace.
Four MFS appliances and assisted by five CFS appliances, arrived to find one unit completely engulfed in flames, with the fire spreading to the surrounding units.
The roof of the unit had collapsed.
Crews controlled the fire in 45 minutes, but it took over than two hours to extinguish the blaze.
At least six of the seven units in the complex were affected, but no injuries were reported.
Fire cause investigators are attend this morning.