Fire crews were dispatched to 1048 Palmetto Ave. just before 6 a.m. after smoke was reported in the area, according to the North County Fire Authority.
Arriving units reported seeing smoke coming from the eaves of the one-story structure.
Firefighters entered the building and extinguished the blaze, which was burning in and around the ceiling, fire officials said.
No one was injured, and the cause of the fire remains under investigation.
