Emergency services were called to an arson attack in the early hours of Wednesday morning.
The incident took place at a property on Queensway, between Yeadon and Guiseley, at about 3am.
Firefighters from Rawdon, Stanningley and Cookridge helped one woman out of the fire-hit house and tackled the blaze.
A spokesperson for the fire service said the incident was being treated as arson.
West Yorkshire Police and Yorkshire Ambulance Service also attended the scene.
The woman was taken to hospital as a precaution for smoke inhalation.
A brick was reportedly thrown through one of the windows, according to one resident.
West Yorkshire Police has been contacted for a comment.
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