Neighbour Wally Dunn said he was woken yesterday morning by a "crackling" noise and looked out his window to see his neighbour's house on fire, again.
"The flames were out of control," he said.
Mr Dunn was among a number of neighbours who dialled 111. "They were here about seven minutes later, it was a very quick response. To be hit twice - it's bloody scary to see your neighbour's house go up in flames."
The property's direct neighbours, who did not want their name published, said Campbell Place was a street where "everyone knew each other".
"Last night everything was quiet overnight. Then we woke up this morning (Sunday) to see the investigators there again," they said.
Police were also investigating another suspected arson on Morningside Rd, which happened early Thursday morning. The fire service went to the unoccupied house about 2am to find it alight.
- Anyone with information should contact police on 430 4500 or anonymously via Crimestoppers on 0800 555 111.