Multiple fire crews were called to a barn fire on Highbury Avenue South just before 4 a.m. Saturday.
Three fire engines, two tankers, and one truck from London joined with Belmont crews to put out the blaze.
"Fire crews have a tanker shuttle in effect and secured the aerial unit to a hydrant with a number of Engines relaying water down Highbury Ave.," the London Fire Department said.
Initially, there were concerns about propane and fuel tanks being exposed to the flames, but as of 5 a.m. the fire was contained to just the footprint of the barn.
According to the fire department, no animals were lost.
Damage is estimated at $2 million.
Investigators were unable to determine the cause, but have deemed the fire as not suspicious in nature.
The Ontario Fire Marshal has been notified.