The inferno was reported shortly after 8 a.m. at a 15,000-square-foot structure in the 100 block of Lincoln Street, according to the Riverside County Fire Department.
No injuries were reported.
Fire erupts at 15,000-square-foot commercial building in Banning
The Fire Department's hazardous materials team was summoned to the scene, but officials did not immediately confirm what was burning inside the building.
The cause of the blaze was unknown.