A fire broke out at Sir Keir Starmer's home in the early hours of the morning, with police now investigating the blaze.
The London Fire Brigade attended the property in north London after they received reports of a blaze at around 1.30am on Monday.
The door to the four-bedroom property was damaged but nobody was injured.
A Metropolitan Police spokeswoman said: “On Monday 12 May at 01:35hrs, police were alerted by the London Fire Brigade to reports of a fire at a residential address in north London.
Sir Keir Starmer and his wife Victoria outside the property in 2020
PA
“Officers attended the scene. Damage was caused to the property’s entrance, nobody was hurt.
"The fire is being investigated and cordons remain in place while enquiries continue.”
London Fire Brigade said: “Firefighters were called to a small fire outside a property in Kentish Town this morning. The brigade was called at 1.11am and the fire was under control by 1.33am. Two fire engines from Kentish Town fire station attended the scene.”
A Downing Street spokesman said: “The Prime Minister thanks the emergency services for their work.
“The incident is subject to a live investigation and we won’t be commenting further.”
Starmer now lives at No 10 and is letting out the property, which is believed to be worth around £2 million.
The couple bought their home in 2004 for £650,000, and they paid off the mortgage last year.
The property has undergone several renovations, including a loft conversion and the installation of two rooflights and a dormer window.