Fire tore through a large industrial structure in Bracebridge.
More than 25 firefighters attended the scene on Rosewarne Drive just before 5:30 on Thursday afternoon.
The fire department says the blaze began in a mechanical service bay at Fowler Construction Limited and spread to adjacent vehicles and storage areas.
Everyone safely evacuated.
The Ontario Fire Marshal has been notified of the incident.
Banner image: Twitter/Town of Bracebridge