Firefighters were able to quickly squelch a fire that started on the porch and spread to a home at 11 Graffam Way in Bath early this morning, displacing three occupants and a dog.

The fire was reported at 1:43 a.m. Monday.

Bath Fire Chief Lawrence Renaud said smoke detectors woke the occupants and they were able to get out of the house. They then tried to extinguish the fire themselves. They were unsuccessful, however, because the fire had worked its way up the side of the house and through the vents and had got into the attic.

Everyone got out unharmed and Renaud said the local chapter of the American Red Cross will assist the three until they can determine what lies ahead to remediate their housing situation.

“Smoke detectors save lives, they really do,” Renaud said.

The fire is not considered suspicious, but firefighters said the cause hadn’t been determined. An investigator with the state fire marshal’s office was expected to visit the home today.

The home belongs to Anne Merry of West Bath, said Renaud. Her son and two friends were living at the home. According to the city assessing database, the ranch-style home, built in 1974, was assessed at $180,400. The damage was estimated to be in the range of several thousand dollars.

“It will take pretty much a total rehab, but they have a structure to work with,” Renaud said.

West Bath and Brunswick fire departments responded to the scene, Phippsburg Fire Department responded with an ambulance and Woolwich Fire Department provided station coverage.