A London Duplex With Ties to Early 20th-Century Royalty Comes with a Secret Garden
The Mayfair home, listed for £8.25 million, once belonged to the Earls of Lindsay.
The Mayfair home, listed for £8.25 million, once belonged to the Earls of Lindsay.
A duplex unit with access to a secret garden in the heart of London’s Mayfair neighborhood is now available for £8.25 million (US$10.67 million).
Like most homes in Mayfair, this one has a long and royal history punctuated by war. The three-story unit is located on Park Avenue on the ground-level of a grand Edwardian mansion that was once the home of the wealthy Earls of Lindsay.
One of several units in the brick rowhouse, it spans 3,394 square feet and features three en-suite bedrooms, 10-foot ceilings, a guest cloakroom beside the reception hall and French doors that lead to the private Green Street Gardens.
The “secret” gardens are the highlight of the property, said Peter Wetherell of the brokerage Wetherell, which is representing the seller, who could not be identified.
“If you just walk the streets of Mayfair you’d never know that the garden exists,” he said.
The residence is part of a nearly rectangular complex of townhouses that borders the interior Green Street Gardens, which are therefore largely undetectable from the outside. The gardens are accessible to about 30 homeowners, according to Wetherwell.
Located just a block away from Hyde Park, the site originally held a 1778 Georgian building, which was demolished during a rebuilding of the Grosvenor Estate in the late 19th century, according to information from Wetherwell. The current Edwardian mansion was on track to be built in 1913, but the interruption of World War I delayed its completion until 1925.
In the 1930s, it was purchased by Scottish nobleman Reginald Lindesay-Bethune, the 12th Earl of Lindsay, who was known to host cocktail parties for his prestigious neighbors.
The Earl died just before the beginning of World War II, at which point the home was shuttered.
Afterward the whole complex was converted to office space under a temporary provision that expired in 1990—at which point it was returned to its original residential use.
The gardens have their own backstory. They were designed by Grosvenor Estate architect Edmund Wimperis prior to World War I on the grounds that had once been the Royal Stables. The garden was meant to enhance the value of the properties that bordered it, which has apparently worked.
One of the neighboring properties, which was once the Cypriot embassy, sold for £25 million (US$32.5 million) last year. That home spans 8,435 square feet and also has access to the secret garden.
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Mirvac’s 45-level Trielle has topped out at Yarra’s Edge, pairing riverfront apartments with wellness facilities, private dining and resident services.
Mirvac has topped out Trielle at Melbourne’s Yarra’s Edge, with more than 70 per cent of the riverfront development sold and approximately 80 per cent of purchasers intending to make their apartment a home.
The figures, released on September 22, point to an owner-occupier audience for one of the precinct’s final residential towers. Mirvac began developing Yarra’s Edge in 2003, and its latest addition occupies one of the remaining absolute riverfront sites.
Mirvac CEO of Development Stuart Penklis said existing residents were among those moving up within the neighbourhood.
“Many purchasers already have a connection to Yarra’s Edge,” Mr Penklis said, describing buyers whose changing needs were encouraging an upgrade within the precinct.
“As one of the final residential towers within Yarra’s Edge, Trielle represents the culmination of more than two decades of creating one of Melbourne’s most established and sought-after waterfront communities,” Penklis said.
“Positioned on the Collins Street axis with absolute river frontage, Trielle offers residents a rare opportunity to enjoy sweeping views across the Yarra River, Melbourne skyline and Port Phillip Bay, while remaining seamlessly connected to the CBD. With Trielle now more than 70 per cent sold, we’re continuing to see strong demand from buyers seeking quality homes in established locations.”

The developer also flagged a penthouse and sub-penthouse collection with larger layouts, premium finishes and broad outlooks. The planned wellness centrepiece, The Oasis, encompasses a 900-square-metre elevated urban rainforest.
Mirvac General Manager Residential Development Victoria Elysa Anderson said Trielle had resonated strongly with buyers seeking a rare lifestyle offering in Melbourne.
“Opportunities to secure a new luxury residence on a riverfront site of this calibre are incredibly rare, particularly within a community like Yarra’s Edge,” Anderson said.
“What makes Trielle unique is the combination of exceptional views, world-class residential facilities and the lifestyle that already exists around it. Residents are buying into a mature waterfront community with parks, promenades, dining, wellness and strong community connections already in place.”
The 45-level tower brings a substantial new presence to that waterfront. Its residential offering spans one-, two-, three- and four-bedroom apartments, with Signature, Prestige and Sub-Penthouse collections accommodating different household sizes. The north-facing position connects the apartments visually to the river and city beyond.
Seven storeys above the promenade, the planned Oasis combines planting and a running stream with a Scandinavian-inspired wellness club developed with spa specialist Naomi Gregory. Facilities include a 25-metre lap pool, hot magnesium pool, sauna, hydrotherapy, a gym, yoga and Pilates room, and treatment spaces.

The amenity extends beyond exercise. Residents will have access to The Biblioteca library and workspaces, ground-floor work pods, and The Salone piano lounge. A private Chef’s Table dining room offers a setting for larger gatherings, while a cinema, games room and sports lounge broaden the entertaining options. Concierge services and a dog-wash area support everyday routines.
Trielle comprises a collection of one, two, three and four-bedroom residences. Reflecting strong demand from owner occupiers, approximately 80 per cent of purchasers to date intend to live in their homes, highlighting the project’s appeal to those seeking a long-term waterfront lifestyle.
Mirvac has recently delivered The Albertine, a premium apartment development on the edge of Melbourne’s CBD, and is nearing completion of Prince & Parade in Brunswick, further strengthening its portfolio of thoughtfully designed apartment communities in some of Melbourne’s most sought-after urban locations.
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