No one was injured in a house fire in Halifax's north end on Monday evening.

The fire broke out at 5578 Falkland St. at about 6:30 p.m. and spread to a house next door.

A resident said the blaze began when a propane tank caught fire.

But Chuck Bezanson, division commander with Halifax Regional Fire and Emergency Services, said although the fire appeared to have started outside, it's too early to pinpoint the cause.

Flames spread inside the attic and dormer space and burned most of the roof on one corner of the house. The home was extensively damaged both inside and out, Bezanson said.

The fire spread to the house next door, but damage was limited to the balcony area.