About 12 trucks were delayed from reaching the triplex at 333 Delinelle Street — just south of Notre-Dame Street — because the street has been dug up to replace sewage pipes.
Firefighters had to park their pumper truck about 500 metres from the building because it was the only place they could access a hydrant.
Other trucks gained access to the building from neighbouring Georges-Étienne Cartier Street.
Once crews did reach the one-alarm fire, they quickly put it out.
No injuries have been reported.
Last Wednesday about 50 homes were evacuated because of a gas leak at the same intersection.