People living nearby the Willington house have spoken of their shock.
The explosion happened in the early hours of MondayEmergency services were called to Coronation Terrace in Willington, County Durham, at about 01:30 BST.
Durham Police said nearby residents were told to leave their homes "as a precaution", with the affected property cordoned off.Watch: Doorbell camera captures Willington house explosion"A cordon has been put in place around the property while emergency services work at the scene," a spokesperson said.Hannah Wright and Andrew Green woke up to the sound of a "massive explosion""The house was gone," she told the BBC.
County Durham and Darlington Fire and Rescue Service said an investigation would take place "in due course". Group manager Chris Williams said: "Our crews will remain in the area today alongside colleagues from Durham Constabulary, Durham County Council and Northern Gas Networks to assess the site and ensure it is structurally safe."
The fire service has since confirmed residents are being allowed back into their houses, but there is no access to gas or electricity yet.
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