Firefighters say a man working on his car accidentally set the huge fire last night at a storage building on Rochester's east side.
It broke out last night on Leighton Avenue at Greenleaf Street.
The building reportedly had storage units for cars and area businesses.
RFD Lieutenant David Abdoch says a firewall helped contain the blaze.
That man has been taken to the hospital with burns.
There's no update yet on his condition.