The day began with a 7.45am callout to a roof fire in the Historic Stone House bed and breakfast apartment in Hallenstein St.
It was the second fire at the building in four days.
Then, at 2.30pm, firefighters were called to a blaze on Peninsula Rd, Kelvin Heights, after Denise Kemp heard a smoke alarm when she returned to her home.
"I'm still pretty shaken up ...
I'm just glad they stopped the fire," she said after allowing the Otago Daily Times inside to inspect the damage.
Queenstown fire station officer Dave Christie said Mrs Kemp was right to call the fire brigade and not enter the house.
The fire was contained to the lounge at the rear of the house. Thermo-visual technology was used to trace the path of the fire but the cause could not be determined yesterday.
Appliances from Queenstown and Frankton attended the blaze.
The fire in the Historic Stone House boutique accommodation was its second in four days - a hot water cylinder went on fire last Friday.
Queenstown chief fire officer Bob Robertson said he was told the electricity and water supply to the property were turned off following last Friday's fire, which was caused by old wiring.
The water cylinder burst as a result of the fire and extinguished the flames.
Mr Robertson said yesterday's fire began when an electrical malfunction in the wiring to the hot water cylinder ignited and flames spread up through the walls to the corrugated roof.
"We can't know for sure but the electrical unit could have been smouldering for a couple of days ... you can see just from looking at the wiring, the fire was caused by the same unit," he said.
He said no-one was injured in the fire and the majority of the damage was caused to the rear external wall and the central roof.
Mr Robertson said the situation became "difficult" when the decision was made to unscrew a number of roof panels.
"We had to unscrew the roof to completely put the fire out ... it took around half-an-hour to extinguish the flames," he said.
Wooden beams supporting the roof panels caught fire and were inaccessible from inside the apartment.
Mr Robertson said the malfunction was a "concern" because the bed and breakfast operators had reported turning the electricity off.
Alex McMillan, who leases the heritage trust property, which was vacant at the time of yesterday's fire, declined to comment .
