Over a dozen two-wheelers parked near the building were also gutted but no casualty has been reported, a police official said.
The fire broke out around 12.30 AM, following which 12 fire tenders were rushed to the spot. It took over three hours to douse the flames after which a cooling operation was launched, a fire official said.
The fire is suspected to have occured due to a short-circuit, police said, adding, investigation of the matter is underway.