The blaze at the home in Ashmore Avenue terraced house started shortly before 11.30pm on Saturday, with fire crews using a hose reel jet to tackle the fire which was at the rear of the property.
Police are now investigating whether the fire was arson with intent to endanger life.
A West Midlands Police spokesman said: "We were called to a fire in Ashmore Avenue just after 11.30pm.
"We are investigating as a possible arson with intent to endanger life. No-one was injured."
A spokesman for West Midlands Fire Service added: "We received a call at 11.29pm to a house fire. The appliances were from Fallings Park, Willenhall and Bloxwich."