Police have appealed for witnesses after the spate of suspicious fires in inner-city Highgate Hill last night.

Emergency services were called to the first incident at 9:30pm, where a house on Franklin Street in Highgate Hill was on fire.

The blaze was extinguished, however a short time later, crews were called to another fire at a home on the same street.

The house was extensively damaged.

While at the scene, a third fire was reported at a unit block on Hampstead Road, around the corner from Franklin Street.

Multiple cars parked underneath the building were damaged.

A crime scene has been declared on each street.

No one was injured as a result of the fires.

Acting detective inspector Denis Silk said the first house that caught fire was the worst blaze of the three.

The house was under renovation.

“The poor people have got to start again with their renovations because inside sustained some fairly significant damage,” Inspector Silk said.

When the second fire erupted a few moments later, the residents managed to start putting out the blaze.

“Luckily the residents were awake for that and were able to put it out before any real damage was sustained,” he said.

The third fire was lit in a carport underneath a block of units, around the corner from the first two fires.

Several cars were set alight and damaged.

“Luckily it was only the vehicles and the carport [damaged], the residents have seemed to escape relatively unscathed,” he said.

The three sites have been declared crime scenes.

Inspector Silk said the possibility of the fires being linked was a “decent working theory given the proximity and the times”.

No streets are closed and vehicles are free to travel through the area.

As investigations continue police are appealing for information, including dashcam footage from around the area last night.

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