At 5.31am on Friday (22) two crews from Cambridge were called to a fire on Addenbrookes Road in Trumpington.
Firefighters arrived to find a fire in the bedroom of a house. Wearing breathing apparatus they extinguished the fire using a hose reel and a jet and cleared the smoke using a positive pressure ventilation fan.
The house was safely evacuated before crews arrived.
The crews returned to their station by 8am.
An investigation is being carried out to determine the cause of the fire.