Home that burned down, killing 7 children, had hardwired smoke detectors

The Halifax-area housegutted Tuesday in an early morning fire that killed seven children was hardwired with multiple smoke detectors, according to a person familiar with the home's design.

The source, who asked to remain anonymous, told CBC News there weresmoke detectors in all three bedrooms of 33 Quartz Dr.in Spryfield, with several more on each level of the detached, two-storey home.

Images of the home's interior were posted on the website of Picket Fence Homes, a developer with an office in Clayton Park.

The post, which was still accessible as of Wednesday night,described the property as "alovely family home" that would be available for rent as ofMarch 1. The Barhofamily had intended to move back to Elmsdale, N.S., where they had first settled after arriving in Canada from Syria in2017.

Calls to Picket Fence Homes were not returned Wednesday.

The source told CBC News the home washeated entirely with electric baseboard heaters. All appliances, including the hot water heater, washers and dryers, and the stove were also electric.

A neighbour who witnessed the fire reported hearing a bang and a woman screaming in the early morning hours of Tuesday. Danielle Burt said she looked out the window to see flames coming out of the back door of 33 QuartzDr.

An online map from Heritage Gas shows the street has no natural gas service. The closest natural gas line is more than 500 metres away from the home.

The source told CBC News the home had three bedrooms and two bathrooms on the top floor. That's also where the home's washer and dryer were situated.

The master bedroom, at the front of the house, had a full bathroom and walk-in closet. Two bedrooms at the back were smaller, each able to accommodate a queen-sized bed,but with not much more room.

The main floor had wooden flooring and included a living room at the front, withan open kitchen and dining room at the back of the house.

There was a garage at the front of the home, along with a bathroom, a utility room, and a carpeted, windowless recreation room in the basement.

During a news conference Tuesday, deputy fire chief Dave Meldrumdeclined tosay where firefighters recovered the bodies of the children.

Halifax Regional Fire and Emergency has not released any details about its investigation into the causeof the fire.

On Thursday, Meldrum reassured the public that the fire at 33 Quartz Dr. doesn't mean other similarly constructed homes are dangerous.

"We have no reason to believe there's an imminent risk to public safety," he said."If we thought there was, we would be making announcements and doing public education."

New vs. old home construction

The home at 33 Quartz Dr. was a relatively new building. Its building permit was issued at the end of 2012.

He said new homes tend to have lightweight materials and smaller lumber that's joined with nailing plates. They may also have joists and beams made of laminate construction, with wood and glue together, Meldrum said.

Fire-resistant materials such as drywall help prevent fire from spreading.

"Sometimes if the fire can penetrate one of those barriers that reduces fire spread and if it can get to the lightweight structures in new home construction, we as firefighters know that the home can burn quickly. We're aware of that,"Meldrum said.

Older homes tend to use heavy timber that is so thick a roof may stay stable for 10 or 15 minutes during an attic fire, "whereas a new home construction the roof may actually fail much more quickly."

But Meldrumsaid new homes are built under new codes and are protected by alarm systems.

"So I don't want to leave anyone with the impression that new home construction is unsafe," he said.

Meldrumsaid all homeowners should ensure they have functioning smoke alarms and conduct regularmaintenance on their furnace, electrical system and appliances.

A police spokesperson said there were no initial indications the fire was suspicious.