A family of six has been left homeless after a townhouse fire on Heatherington Road, one of three fires battled by Ottawa firefighters within five kilometres of each other in a seven-hour span.

Ottawa firefighters responded to unit 76 at 1485 Heatherington Rd. at about 12:50 a.m. Thursday after 911 calls reported black smoke and fire.

Firefighters arrived to find the smoke, declared a working fire and took less than 15 minutes to knock the blaze down.

The two adults and four children living inside were displaced by the fire. Nobody was injured.

Damages are estimated at $220,000. The cause of the fire remains under investigation.

Arson investigation at former Thunderbird site​

Firefighters battled two other fires very close-by — one before and one after.

The first happened at a rowhouse at 2318 Russell Rd. at about 7:36 p.m. Wednesday when a kitchen fire was quickly knocked down. Nobody was injured.

Seven hours later, firefighters responded to 3145 Conroy Rd. after a 911 call reported flames shooting from the former home of Thunderbird Golf & Go Karts.

The building, which is vacant, was fully involved and firefighters were forced to tackle the blaze for "some time" in a defensive position.

Nobody was injured in the fire and the cause is not yet known. The Ottawa police arson unit is in charge of the investigation.