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Plot for Britain’s Largest New Home Hits Market for £20m

CGI model of Britain’s largest new home
CGI model of Britain’s largest new home (Image credit: Sotheby's / SWNS)

Planning permission has been granted to build Britain’s largest new home in the Oxfordshire countryside. It has hit the market for a cool £20m, but it could be worth more than £100m once built. 

St John’s House in Ramsden is currently just a plot of 60 acres of private parkland, but now planning permission has been obtained, a mega mansion will be built on a 68,000 foot estate. 

The house will come with more than 80 rooms and the equivalent floor space of more than 60 average-sized family homes. It is expected to be the largest Palladian home built in the UK for over 100 years.

Planning consent was finally granted for the proposed estate after nearly 25 years of planning applications and design work by the world-renowned architect Professor Robert Adam.

Sotheby’s International Realty is selling the land and the property design that comes with it. Managing director Guy Bradshaw said: "This sale provides the opportunity to create a significant and special home that once built, will be one of the UK’s most private and significant homes.

"It has taken over 20 years to secure comprehensive planning approval and we believe it will no longer be possible to build something of this stature in this location."

Planning layout for Britain's largest new home

The planning layout for Britain's largest new home (Image credit: Sotheby's / SWNS)

Inside Story

Plans for inside the estate include a Great-Gatsby-inspired ballroom, bowling alley and underground car museum, as well as a master suite that will span the entire top floor. 

There will be two swimming pools in the indoor sports complex, plus a gym that overlooks the ballroom, and a jacuzzi, sauna and steam room.

If that’s not enough, there will be an entertaining floor known as the ‘Piano Nobile’, which will include formal living and dining rooms, a games room and a music room. There will also be a tennis court and guest lodge. 

Bradshaw added: "If someone were to spend in the region of £50m on the build, they will have installed every conceivable security feature within the structure and the most spectacular interior finishes. Once complete, we expect the end value could be in excess of £100m”. 

"This would make it not only the largest new home to be built in the UK for over a hundred years but also the only one built from the ground up.”

Jack has worked in journalism for 11 years and is the News Editor for Homebuilding & Renovating, a role he has had since 2019. He strives to break the most relevant and beneficial stories for self builders, extenders and renovators, including the latest news on the construction materials shortage and hydrogen heating. In 2021 he appeared on BBC's The World at One to discuss the government's planning reforms. 


He enjoys testing new tools and gadgets, and having bought his first home in 2013, he has renovated every room and recently finished a garden renovation.