The Hollywood couple have purchased the property in St Johns Wood which has been home to many celebrities including Sir Richard Branson, Lily Allen, Ewan McGregor and Sir Paul McCartney.
Jennifer and Nicholas will also apparently be assembling their own furniture, after Nicholas’s sister Clarista admitted that the pair were into feng shui.
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Jennifer Lawrence and Nicholas Hoult at the Monaco Grand Prix
"It's his first house. He's very excited and has been getting all his furniture from Ikea," she told The Sun newspaper.
"Nick has been big into feng shui, so in his room he has had branches, twigs with lights, the mattress and everything else on the floor - like water features and chairs - facing in the right direction."
The cute couple met in 2011 on the set of X-Men: First Class and dated for two years before splitting in 2013.
X-MEN: DAYS OF FUTURE PAST TRAILER WITH JENNIFER LAWRENCE AND HUGH JACKMAN
Their romance soon rekindled after they met again on the X-Men sequel, X-Men: Days of Future Past.
Jennifer has fallen in love with the English countryside, said one source, who said: "Jen loves the English way of life and as they are now serious again, it makes sense to look into buying somewhere."
They have spent several weeks looking for property in London and in Hampshire near Nicholas’s parents, and last week were spotted dining out with fashion designer Tom Ford.
Jennifer Lawrence and Nicholas Hoult at the 2014 Golden Globes
Speaking of his relationship with Jennifer, Nicholas said: "The privacy thing obviously changes but the rest pretty much stays the same."
Speaking to V Man Magazine, he said: "It’s like that thing whereby you don’t believe your own hype. Enjoy the good times but don’t get swept away with it."