A suspected arson attack badly damaged two sheds in Cowley on Tuesday.
Firefighters from Slade Park and Rewley Road fire stations used jets to tackle the fire in Barns Road.
They were called to the blaze at 9.12pm which spread to two garden sheds, which were severely damaged.
Oxfordshire Fire and Rescue Service said the fire was a suspected arson attack.
Thames Valley Police spokesman Lucy Billen said officers were investigating but nobody had been arrested.