Much of Prime Central London is not owned house by house. Large parts of Mayfair, Belgravia, Chelsea, Marylebone and St James's belong to a handful of historic landed estates, some of which have held their land for centuries. For international buyers this is one of the least understood — and most important — features of the market.
Who the estates are
- Grosvenor — much of Mayfair and Belgravia, including Grosvenor Square, Mount Street, Belgrave Square and Eaton Square.
- Cadogan — a large part of Chelsea and Knightsbridge, including Sloane Street, the King's Road and Duke of York Square.
- Howard de Walden — a substantial part of Marylebone, including Marylebone High Street and the Harley Street medical district.
- Portman — a large area of Marylebone west of the Howard de Walden holdings, around Portman Square and Seymour Place.
- The Crown Estate — significant holdings across St James's, Regent Street and parts of Mayfair.
Why it matters to a buyer
Most homes are leasehold
On estate land, many houses and nearly all apartments are sold as long leases rather than freeholds. The length of the remaining lease has a direct effect on value, mortgageability and future costs. A short lease can be extended, but the process, cost and timetable need careful advice.
The estate is your long-term neighbour
Estates set and enforce standards for alterations, use and maintenance. That consistency is a large part of why these neighbourhoods remain so attractive — but it also means renovation plans, from a new kitchen to a basement, may require estate consent in addition to planning permission.
Stewardship creates value
The estates take a very long view. Their investment in public realm, retail and restaurants has created the village-like streets — Mount Street, Elizabeth Street, Pavilion Road, Marylebone High Street — that today's buyers prize.
How we help
Diana has worked alongside the Grosvenor and Crown estates and spent much of her career in W1 and SW1. Before a principal commits, DTL makes sure the estate position is understood: lease terms, consents history, service charges, and anything the estate is planning nearby. It is quiet work, but it protects value for decades.
This guide is general information and not legal advice. Always take specialist legal advice on leasehold terms before purchase.

