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.
2 min
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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The 2026 McGrath Report warns that without urgent reforms to planning, infrastructure and construction, housing affordability will continue to slip beyond reach for most Australians.
3 min
Australia’s housing market has reached a critical juncture, with home ownership and rental affordability deteriorating to their worst levels in decades, according to the McGrath Report 2026.
The annual analysis from real estate entrepreneur John McGrath paints a sobering picture of a nation where even the “lucky country” has run out of luck — or at least, out of homes.
New borrowers are now spending half their household income servicing loans, while renters are devoting one-third of their earnings to rent.
The time needed to save a 20 per cent deposit has stretched beyond ten years, and the home price-to-income ratio has climbed to eight times. “These aren’t just statistics,” McGrath writes. “They represent real people and real pain.”
McGrath argues that the root cause of Australia’s housing crisis is not a shortage of land, but a shortage of accessibility and deliverable stock.
“Over half our population has squeezed into just three cities, creating price pressure and rising density in Sydney, Melbourne and Brisbane while vast developable land sits disconnected from essential infrastructure,” he says.
The report identifies three faltering pillars — supply, affordability and construction viability — as the drivers of instability in the current market.
Developers across the country, McGrath notes, are “unable to make the numbers work” due to labour shortages and soaring construction costs.
In many trades, shortages have doubled or tripled, and build costs have surged by more than 30 per cent, stalling thousands of projects.
Need for systemic reform
McGrath’s prescription is clear: the only real solution lies in increasing supply through systemic reform. “We need to streamline development processes, reduce approval timeframes and provide better infrastructure to free up the options and provide more choice for everyone on where they live,” he says.
The 2026 edition of the report also points to promising trends in policy and innovation. Across several states, governments are prioritising higher-density development near transport hubs and repurposing government-owned land with existing infrastructure.
Build-to-rent models are expanding, and planning reforms are gaining traction. McGrath notes that while these steps are encouraging, they must be accelerated and supported by new construction methods if Australia is to meet demand.
One of the report’s key opportunities lies in prefabrication and modular design. “Prefabricated homes can be completed in 10–12 weeks compared to 18 months for a traditional house, saving time and money for everyone involved,” McGrath says.
The report suggests that modular and 3D-printed housing could play a significant role in addressing shortages while setting a new global benchmark for speed, cost and quality in residential construction.
Intelligent homes
In a section titled Weathering the Future: The Power of Smart Design, the report emphasises that sustainable and intelligent home design is no longer aspirational but essential.
It highlights new technologies that reduce energy use, improve thermal efficiency, and make homes more resilient to climate risks.
“There’s no reason why Australia shouldn’t be a world leader in innovative design and construction — and many reasons why we should be,” McGrath writes.
Despite the challenges, the tone of the 2026 McGrath Report is one of cautious optimism. Demand is expected to stabilise at around 175,000 households per year from 2026, and construction cost growth is finally slowing. Governments are also showing a greater willingness to reform outdated planning frameworks.
McGrath concludes that the path forward requires bold decisions and collaboration between all levels of government and industry.
“Australia has the land, demand and capability,” he says. “What we need now is the will to implement supply-focused solutions that address root causes rather than symptoms.”
“Only then,” he adds, “can we turn the dream of home ownership back into something more than a dream.”
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