Boris and Carrie Johnson have put the London townhouse they bought for £1.2million up for sale in the hope of making a £400,000 killing.
They snapped up the four-bed Victorian terrace in July 2019 when Mr Johnson became PM and it is now on the market for £1.6million.
There has been a property price boom as buyers rush to beat interest rate hikes.
The Johnsons have been living in Downing Street since 2019.
It is understood they had been looking to rent out the three-storey red brick home in Camberwell for up to £4,000 a month, but never got round to it.
Meantime, the PM got into hot water over his controversial £200,000 refurbishment of the Downing Street flat with the help of Tory donors.
A neighbour of the South London property said: “The decorators were in earlier this year and from what we could see they must have spent at least £50,000 on the place.”
Mr Johnson got his initial home loan from Santander but has since remortgaged with Clydesdale Bank, according to Land Registry records.
The house boasts a 100ft rear garden and 2,100 sq ft of living space.
Estate agents Davis and Gibbs says: “The property is finished to an excellent standard throughout.
“It retains many characteristics, including shutters, wooden floors and low-level cast-iron radiators.”
It is located near Camberwell’s Myatts Field Park which is described by the agents as “a hidden London gem enjoyed by families looking for a quiet life”.
And to entice prospective buyers, the property is being advertised chain-free.
It is not known where Mr and Mrs Johnson and their two children, Wilfred, two, and Romy, seven months, will live when they are turfed out of Downing Street next month by the
new Prime Minister.
But they also have another £1.2million, four-bed detached house in Thame, Oxfordshire.
No10 did not comment.