Police say it appears the building was vacant at the time.
Lee Kempster lives in the neighbourhood and made the 911 call after he heard the roof collapse and saw debris flying through the air. He then put on his tennis shoes and ran to the club to see if anyone was in there.
“Normally, there’s runners in there on Sundays, but luckily, it didn’t look like there was anybody around today with this weather," he said.
The force of the collapse was so strong, it blew the side doors open, says Kempster.
"I actually went in a couple feet and kept yelling for people until emergency services showed up."
Kempster says with the alarm going off, he wouldn't have been able to hear anyone anyway.
He says the inside of the building was a mess, and he could only see a bit of the floor.
"There was like insulation and all kinds of stuff hanging down. There was water pipes burst. There was a gas line running in there,” he said.
Maureen O'Brien lives next door to the curling club and was sleeping when the collapse occurred. The collapse woke her up.
"It was just a really loud series of bangs and crunches," she said.
The O'Brien family home is beside the club and is only separated by a small alley.
The club had a flat roof and is located at 948 South Bland Street in the south end of Halifax.
Police and firefighters are at the scene.