It started at around 2 a.m. in a home on South 20th Street.
Flames then spread to two other houses but everyone made it out safely. Firefighters got the flames under control around 3:30 a.m.
One home was levelled in the fire, and firefighters now say two others will have to be torn down.
A house across the street also suffered some minor damage from the heat of the flames.
At least six people were evacuated, but there are no reports of injuries.