Why Are Exclusive Properties Being Sold?

For decades, private islands served as family estates where generations of the world’s wealthiest families spent their summers. Today, however, older owners are stepping back, while their heirs are looking at these assets very differently.

• Geographic dispersion: The children and grandchildren of wealthy founders often live in different regions or countries, making the upkeep of enormous private estates increasingly impractical.
• Eye-watering maintenance costs: Unlike conventional real estate, islands require complex logistics. Saltwater accelerates the deterioration of structures, docks are vulnerable to storms and tides, while generators, solar panels and desalination systems require constant maintenance. Experts estimate that basic upkeep of a developed private island can cost anywhere from $84,000 to more than $500,000 a year, excluding major renovations.
• Changing generational priorities: What was once the unique vision of a single owner — whether an ecological sanctuary or a multigenerational family retreat — can feel more like a burden than a prized inheritance to younger generations.

A Massive Wealth Transfer and the Rise of ‘Landmaxxing’

According to Coldwell Banker Global Luxury’s 2026 report, Generation X and millennials are expected to inherit approximately $4.6 trillion in global real estate wealth over the next decade, including $2.4 trillion in the U.S.

Yet younger high-net-worth buyers still value what private islands have always offered: land, privacy, scarcity and isolation.

• Demand for unique properties such as private islands has increased by 146%, while interest in land parcels has risen by 97%.
• Another trend gaining traction is “landmaxxing,” in which wealthy buyers acquire large expanses of land or adjoining properties to maximize privacy, preserve views and accommodate their extended families.

High-Profile Sales of Legendary Private Islands

1. High Island, Connecticut, U.S.
The Ziegler family, whose $2.8 billion fortune was built on Royal Baking Powder, owned the 18-acre island for more than a century. Last November, the family sold it for $26.5 million, as its heirs had scattered across the country. Shortly before that, the family sold the neighboring Great Island for $85 million.

2. Isola Santa Cristina, Venetian Lagoon, Italy
For nearly 40 years, the 72-acre island served as a private retreat for Gernot Langes-Swarovski, the great-grandson of Swarovski founder Daniel Swarovski. He transformed it into a self-sufficient estate complete with vineyards and gardens. Following his death in 2021, the family foundation put the island on the market for €24 million.

3. Pitanguy Island, Brazil
The secluded tropical paradise associated with renowned plastic surgeon Ivo Pitanguy, which hosted members of the global elite for decades, has been put up for sale by his heirs for $100 million — its first listing in 50 years.

4. Hamilton Island, Australia
Wine billionaire Bob Oatley transformed the 2,800-acre island into a luxury resort complete with an airport and hotels. In late 2025, the family sold it to investment giant Blackstone for approximately A$1.2 billion.

5. Inchconnachan Island, Scotland
Soho House founder Nick Jones and his wife purchased the Scottish island for £1.55 million with plans to create a private family retreat. But after Jones experienced cancer, they changed course and put the project on the market for £2.5 million, or around £10 million with a completed turnkey development.

The New Billionaire Philosophy

Today’s ultra-wealthy buyers — particularly tech entrepreneurs and venture capital investors — tend to approach island purchases more pragmatically. Many prefer to test the lifestyle first by renting an island before committing to a multimillion-dollar acquisition.

The line between a private retreat and a business asset is also becoming increasingly blurred. Such properties are now viewed as flexible investments that can function as secluded residences, eco-resorts or profitable hospitality ventures, as seen with properties once associated with François Nars or Richard Branson.

The sale of historic private islands by established dynasties does not signal the end of the trend. Instead, it reflects a changing luxury market — one in which a new generation of wealthy buyers is seeking privacy on its own terms, without the sentimental attachment to someone else’s past.