Duchess of Northumberland’s £9.5m Mayfair Home For Sale


An immaculately dressed and presented lateral residence in Mayfair at 10 Upper Grosvenor Street, formerly the home of the 4th Duchess of Northumberland and later politician Lord Edward Stanley, which has hosted two Prime Ministers, has been transformed by ultra-prime developer Luxlo into a 2,334 sq.ft. (216.9 sq.m.) three-bedroom apartment offering the finest bespoke finishes: for sale via Wetherell.
Occupying the entire second floor of 10 Upper Grosvenor Street, the apartment has been completely remodelled, modernised and interior designed and offers a spacious entrance hall, south facing double reception room with three sash windows, adjoining dining room, a Boffi kitchen and three luxurious bedroom suites, all ensuite, including the principal suite with walk-in dressing room and main marble bathroom.
With tall sash windows and ceiling heights approaching 11ft the bespoke specification includes unique design marble and wood flooring, ornate Georgian ceiling moulding and architraves; sound speakers in all bedrooms and bathrooms and underfloor heating, air conditioning, custom design lighting and bespoke joinery throughout.
The grand Italianate style stucco and Portland stone Victorian building at 10 Upper Grosvenor Street has an illustrious history. It was originally built in 1843-44 by Hyde Park builder James Ponsford, designed by Mayfair architect Henry Harrison.
Originally the Mayfair home of industrialist Henry Kingscote, who owned mines in Australia, in 1881 it became the London pied-a-terre of Eleanor Percy née Grosvenor, the 4th Duchess of Northumberland (1820-1911) who used it to entertain her Grosvenor family (Duke of Westminster) and friends.
Following the death of the Duchess the property was modernised by Grosvenor Estate architect Edmund Wimperis and in 1927 it was purchased by senior Conservative politician Lord Edward Stanley (1894-1938) who that year was made Deputy Chairman of the Conservative Party and needed a pied-a-terre close to Westminster.
In 1935 Lord Stanley was made Under-Secretary of State for the Dominians by Prime Minister Stanley Baldwin and in 1936 was involved in advising the Prime Minister of the Dominians’ opposition to the marriage of King Edward VIII and divorcee Wallis Simpson, which lead to the King’s abdication.
In 1937 Neville Chamberlain became Prime Minister and he promoted Lord Stanley to the cabinet as full Secretary of State for the Dominions, before Stanley died unexpectedly prior to the start of WWII.
At 10 Upper Grosvenor Street Lord Stanley and his wife Lady Sibyl Stanley née Cadogan (the daughter of Viscount Chelsea) hosted political colleagues including Prime Minister Stanley Baldwin and his wife Lucy, Prime Minister Neville Chamberlain and his wife Anne and Foreign Secretary Lord Halifax and his wife Lady Dorothy. Lady Sibyl sold 10 Upper Grosvenor Street and after WWII the grand building was converted into spacious lateral apartments.
Now the property that has hosted aristocrats and famous political figures has been modernised and transformed into the finest new lateral residence in Mayfair currently available to purchase.
The apartment has been adroitly designed with the reception and entertaining rooms to the front Upper Grosvenor Street façade with the long and wide inner hall providing access to the more private bedroom suites located to the rear façade.
The beautifully appointed double reception room has large feature gas fireplace, stunning ornate ceiling and Cerma Marfil marble flooring with Brown Emperador marble border with Oak wood floor perimeter, with contrasting wood finishes designed in a sunrise pattern. Double doors lead into the adjoining dining room/second reception room which can seat 12 people and has statement marble flooring which echos the design of the floor in the main reception room.
The long and wide marble floored inner hall leads to the fully fitted Boffi kitchen which has Gaggenenau appliances and Fumed Eucalyptus wood cabinets with satin brass edging.
The three luxurious bedroom suites include the principal bedroom with Emperor sized bed with bespoke full height velvet headboard, Oak wood flooring and built-in Oak wardrobes and a main bathroom featuring Bianco Eclipsia marble, a marble bathtub and a walk-in marble shower with adjustable body jets. The two further bedroom suites both have ensuite bathrooms finished in Butterscotch and Tundra white marble with walk-in marble showers with body jets.
Peter Wetherell, Founder & Chairman of Wetherell says: “This magnificent residence at 10 Upper Grosvenor Streethas been the home of a Duchess and has hosted two Prime Ministers and a Foreign Secretary. This historically significant property has now been newly remodelled and designed by award winning developer Luxlo into arguably the finest lateral apartment currently for sale in Mayfair. Luxlo are known for their superlative quality and exacting attention to detail when it comes to interior specification and design and they have achieved an outstanding level of presentation with this beautiful and spacious new Mayfair apartment. This luxurious residence is perfect for a couple or family wanting a London pied-a-terre in the heart of Mayfair just off world-renowned Grosvenor Square and on the doorstep of Hyde Park.”
The apartment at 10 Upper Grosvenor Street is for sale with a guide price of £9,500,000 (133 year lease, approx).