Buckingham Palace, £3.9 billion ($4.8bn) Unsurprisingly, Buckingham Palace is the jewel in the crown of the royal portfolio, with an estimated worth of £3.9 billion (4.8bn). Yet, along with other London properties, it has only enjoyed a 0.3% increase in value in the past year.

In 2026, the estimated value of Buckingham Palace is approximately £1.3 billion to £1.5 billion ($1.6 billion to $1.9 billion). This valuation is based on its status as one of the world's most iconic residences, its prime location in central London, and the sheer scale of the property, which contains 775 rooms, including 19 State rooms, 52 Royal and guest bedrooms, 188 staff bedrooms, 92 offices, and 78 bathrooms. The palace grounds also encompass nearly 40 acres of gardens, a helipad, and a private lake. It is important to note that this is a "notional" value; the palace is part of the Crown Estate and is held in trust for the reigning monarch and the nation, meaning it is not a private asset that could be sold on the open market. The value of the property has seen steady growth alongside the London real estate market, though the costs of its ongoing 10-year reservicing program (estimated at £369 million) are also significant. Beyond its real estate value, the palace's worth as a global heritage site and a primary driver of UK tourism is essentially incalculable, representing centuries of British history and royal tradition.