ADJOINING FREEHOLD MAYFAIR TOWNHOUSES PROVIDE OPPORTUNITY FOR GRAND RESIDENCE & PRIVATE FAMILY OFFICE DOMAIN
Mon 27 Oct 2025
Two adjoining freehold Grade II Listed Georgian townhouses at 13 & 14 South Audley Street in Mayfair, providing 15,993 sqft (1,479.63 sqm) of mixed-residential and commercial accommodation. Currently owned and occupied by a private family office, both properties offer direct access to the private South Street communal gardens and are for sale via joint sole selling agents Savills and Wetherell.
Subject to consents, 14 South Audley Street, which is the largest townhouse on the street, could be refurbished into a single luxury five/six bedroom residence. The townhouse has the benefit of an existing passenger lift from lower ground to third floor and could be remodelled to provide up to five grand reception rooms and a large family kitchen/breakfast room over ground and first floor. Extensive leisure facilities, catering kitchen and staff accommodation could be installed over the lower ground floor, with a luxurious principal bedroom suite on the second floor, and four further ensuite bedrooms on the upper floors.
The adjoining six/seven bedroom 13 South Audley Street could be refurbished into a modern lodge, providing a state-of-the-art private family home or office alongside additional guest and staff accommodation over lower ground, ground and four upper floors.
The agents calculate that if refurbished to an immaculate condition the remodelled properties could be worth up to £65 million, a substantial potential uplift in asset value. Alternatively, both properties could be purchased and continue to be used as a private family office domain on the current mixed-residential and commercial basis.
Since 1928 the two properties have been under single ownership, comprising several different owners up to the current vendor. The six storey cream stucco Georgian townhouses have an illustrious history, both owned by various aristocrats and members of high society, with No.14 hosting four British Prime Ministers during its time as a single grand residence.
Both Georgian townhouses were built in the modest Palladian architectural style in c1736-37 by Mayfair builder Roger Blagrave, with cream stucco facades and beautiful ‘Bridgerton style’ interiors by noted master craftsman William Singleton.
The larger of the two, No.14, was built for Lord Galway, MP and Surveyor General of the Crown Estate, the brother-in-law of British Prime Minister Henry Pelham. No.13 was originally the London residence of the Montagu family of Beaulieu fame.
Between 1747 to 1805 No.14 was owned by Admiral Edward Boscawen, a friend of Prime Minister William Pitt, and between 1818 to 1856 was owned by Victorian sculptor Sir Richard Westmacott (Westmacott’s residency provides the Blue Plaque).
In 1923 No.14 was purchased by Conservative MP and landowner Lord Donald Howard, 3 rd Baron Strathcona and Mount Royal. In 1928 Lord Howard acquired No.13 and employed architect Sydney Ernest Castle to modernise the interiors of both properties.
No.14 became a grand mansion where Donald and his wife Lady Diana Howard (her father Lord Wakehurst owned Wakehurst Place), entertained senior conservative politicians and members of high society. No.13 became Lord Howard’s office and a guest house for visitors and staff accommodation.
Between 1934 to 1939 Lord Howard served as Under Secretary of State for War for Prime Minister Stanley Baldwin and later PM Neville Chamberlain. No.14 hosted both Prime Ministers, Foreign Secretary Lord Halifax and the Duke and Duchess of Kent (friends of Lady Diana Howard).
At the end of World War Two 13 & 14 South Audley Street became the Mayfair home of the International Music Association under President William Glock, Controller of Music for the BBC, with performances in the reception rooms of Mozart, Schubert, Lizst and Chopin broadcast by the BBC.
After 1957 13 & 14 South Audley Street became the headquarters of the Royal Photographic Society up until 1979 when the society relocated to Bath and since then the properties have served as business headquarters up until the current day.
James Donger, Director, Central London Development Land at Savills says: “The existing mixed-use commercial and residential profile, with private communal gardens, makes this an exceptional redevelopment opportunity. We also anticipate serious interest from continued Private Family Office use, given the rarity of adjoining freehold buildings on South Audley Street.”
Peter Wetherell, Founder & Chairman of Wetherell says: “Both properties have an illustrious history that includes aristocrats, Prime Ministers and cultural use. The pair could be remodeled and refurbished to provide a grand single residence at No.14 and a lodge for the Private Family Office and staff quarters at No.13. There is the potential for sensitive restoration and modernisation whilst retaining the historic interiors, which could create one of the finest private residences with adjoining family office in Mayfair.”
Subject to consents, 14 South Audley Street, which is the largest townhouse on the street, could be refurbished into a single luxury five/six bedroom residence. The townhouse has the benefit of an existing passenger lift from lower ground to third floor and could be remodelled to provide up to five grand reception rooms and a large family kitchen/breakfast room over ground and first floor. Extensive leisure facilities, catering kitchen and staff accommodation could be installed over the lower ground floor, with a luxurious principal bedroom suite on the second floor, and four further ensuite bedrooms on the upper floors.
The adjoining six/seven bedroom 13 South Audley Street could be refurbished into a modern lodge, providing a state-of-the-art private family home or office alongside additional guest and staff accommodation over lower ground, ground and four upper floors.
The agents calculate that if refurbished to an immaculate condition the remodelled properties could be worth up to £65 million, a substantial potential uplift in asset value. Alternatively, both properties could be purchased and continue to be used as a private family office domain on the current mixed-residential and commercial basis.
Since 1928 the two properties have been under single ownership, comprising several different owners up to the current vendor. The six storey cream stucco Georgian townhouses have an illustrious history, both owned by various aristocrats and members of high society, with No.14 hosting four British Prime Ministers during its time as a single grand residence.
Both Georgian townhouses were built in the modest Palladian architectural style in c1736-37 by Mayfair builder Roger Blagrave, with cream stucco facades and beautiful ‘Bridgerton style’ interiors by noted master craftsman William Singleton.
The larger of the two, No.14, was built for Lord Galway, MP and Surveyor General of the Crown Estate, the brother-in-law of British Prime Minister Henry Pelham. No.13 was originally the London residence of the Montagu family of Beaulieu fame.
Between 1747 to 1805 No.14 was owned by Admiral Edward Boscawen, a friend of Prime Minister William Pitt, and between 1818 to 1856 was owned by Victorian sculptor Sir Richard Westmacott (Westmacott’s residency provides the Blue Plaque).
In 1923 No.14 was purchased by Conservative MP and landowner Lord Donald Howard, 3 rd Baron Strathcona and Mount Royal. In 1928 Lord Howard acquired No.13 and employed architect Sydney Ernest Castle to modernise the interiors of both properties.
No.14 became a grand mansion where Donald and his wife Lady Diana Howard (her father Lord Wakehurst owned Wakehurst Place), entertained senior conservative politicians and members of high society. No.13 became Lord Howard’s office and a guest house for visitors and staff accommodation.
Between 1934 to 1939 Lord Howard served as Under Secretary of State for War for Prime Minister Stanley Baldwin and later PM Neville Chamberlain. No.14 hosted both Prime Ministers, Foreign Secretary Lord Halifax and the Duke and Duchess of Kent (friends of Lady Diana Howard).
At the end of World War Two 13 & 14 South Audley Street became the Mayfair home of the International Music Association under President William Glock, Controller of Music for the BBC, with performances in the reception rooms of Mozart, Schubert, Lizst and Chopin broadcast by the BBC.
After 1957 13 & 14 South Audley Street became the headquarters of the Royal Photographic Society up until 1979 when the society relocated to Bath and since then the properties have served as business headquarters up until the current day.
James Donger, Director, Central London Development Land at Savills says: “The existing mixed-use commercial and residential profile, with private communal gardens, makes this an exceptional redevelopment opportunity. We also anticipate serious interest from continued Private Family Office use, given the rarity of adjoining freehold buildings on South Audley Street.”
Peter Wetherell, Founder & Chairman of Wetherell says: “Both properties have an illustrious history that includes aristocrats, Prime Ministers and cultural use. The pair could be remodeled and refurbished to provide a grand single residence at No.14 and a lodge for the Private Family Office and staff quarters at No.13. There is the potential for sensitive restoration and modernisation whilst retaining the historic interiors, which could create one of the finest private residences with adjoining family office in Mayfair.”