The £50MILLION fixer-upper: Neglected Grade II Mayfair mansion is offered to brave buyers (but you'll need another £20m for repairs)

Britain’s most expensive fixer-upper has been put on the
market for £50million - and will need another £20million spent restoring it. The Grade II-listed mansion has spent years in decline and is now a wreck, requiring a full refurbishment. But the terraced property sits in the middle of Central London's Mayfair, one of the most desirable locations in the world, and is expected to attract keen interest from billionaires.  It could be transformed into one of the UK's finest city homes worth £100million after renovation.

Exterior of property: London'­s most expensive fixer-upper has been put on the market for £50 million - and will need another £20million spent restoring it

Prime location in Mayfair: The Grade II -listed mansion has spent years in decline and is now a wreck, requiring a full restoration

Needs work: The property is in the middle of Mayfair, one of the world's most desirable locations, and billionaires are now preparing to battle over it

Scaffolding outside: The super-rich are looking at mansions in the same way they see mega-yachts and are playing wealthy games on one-upmanship

Top spot: The property is located near Green Park London Underground station - although it's unlikely the owners will ever need to use public transport

Going up in the world: The Mayfair property is likely to attract much interest from potential buyers, despite the appalling state in which it is available

 

And this is how it could look following that £20million restoration...

 

Work to do: The property could be transformed into one of the UK's finest city homes worth a staggering £100million after renovation

Bedroom: There will an eight person lift, a mews home for guests or staff, a wine room, office, catering kitchen and a number of high security vaults

New look: The property currently has listed Chinese wallpaper and silk wall mountings which will be removed and reinstated as part of the refurbishment

Relaxing: The home is thought to have been built after 1750 by John Phillips and George Shakespeare after entering an agreement with Lord Berkeley of Stratton

History: Previous residents have included George Fieschi Heneage, MP for Lincolnshire (1836-1867), The Earl of Camperdown (1867-1918) and The Marquis of Anglesea

Sit back in comfort: Another view of the entertainment room, with a sofa, plenty of cushions and a large television screen

Plush: Artist's impression of the dining room at the mansion, with a fireplace to the left, chandelier above and deep windows at the back

Luxurious: Another view of the dining room, which has a portrait above the fireplace and various other artwork. Glasses and a bottle can be seen on the left

Walking through: Artist's impression of how a corridor or reception area could look at the property, with paintings on the wall and a marble floor

Well lit: Another artist's impression of the refurbished house by Martin Kemp Design shows the type of decor that buyers would expect to see

View of trees: Another artist's impression of a bedroom in the mansion, which is available in one of the most exclusive areas of the country

Posh wash: The bathroom has an unusual formation of mirrors and also has pictures hanging on the wall

Lengthy appearance: A rectangular room with sofas and a table, as well as a TV screen which is mocked up to show a BBC News programme

Visual aspect: Various different portraits and photographs can be seen in this corridor - which appears to be covered in nothing but pictures

Hot property: The wood-panelled sauna room in the extensive house, which is on the market for an eye-watering £50million

Staircase: This artist's impression shows how different the entrance to the property will look once the refurbishment has taken place

Style: Ladies' hats and handbags are displayed in the centre of this room, which also features a fireplace and a set of cupboards

Reading material: Another artist's impression of one of the many lounges in the huge property, which also has plenty of books on the shelves

Light in the dark: Light fittings hang from the ceiling in a mocked-up view of the kitchen, with a table and sink in the frame

Food and drink: The kitchen is viewed from the reverse angle, looking out into the open. BBC News is again seen on a television screen

Pricey: Estate agent Wetherell, expects oil royals, African moguls, billionaires and property developers to look at the home - also being marketing by Beauchamp Estates

Plenty of colours: A bust is seen on the mantlepiece and glasses are in the cupboard on the left of this room, which has a black and white carpet

Comforts: Rolled up towels and another hanging on a towel rack are seen in this room, which also has a wash basin

Swimming pool: The mid-18th Century home will boast seven palatial bedroom suites, eight state rooms, a leisure complex and private cinema when completed

Billiards table and globe: The property has been put up for sale with estate agent Wetherell for a jaw-dropping £50million

From old to new: After World War Two, the property - like many in Mayfair - was converted to commercial use

Mayfair's finest: The area is undergoing its biggest overhaul in 100 years, with these grand properties being converted back into homes for the super-rich

Come outside: An artist's impression of how the garden at the £50million London property could look, with seating areas and parasols

Aerial view: When completed, the mansion will be worth £100million - and this value could double within the decade with prices expected to skyrocket in Mayfair