1947: The Nationalisation of Development Rights
The Town and Country Planning Act 1947 was the most radical piece of property legislation in UK history, effectively nationalising the right to develop land.
If you have ever been frustrated by the UK's slow and restrictive planning system, you can trace it back to the aftermath of the Second World War. The Town and Country Planning Act 1947 fundamentally changed property ownership in Britain.
Losing the Right to Build
Before 1947, if you owned a piece of land, you generally had the right to build whatever you wanted on it, subject to local bylaws. The 1947 Act changed everything: it nationalised 'development rights'. From that point on, simply owning land was not enough—you had to ask the State for permission (Planning Permission) to develop it.
The Act also introduced a 'development charge' which essentially taxed 100% of the increase in land value that resulted from gaining planning permission. While the 100% tax was later abolished, the core principle remains: the State controls what can be built, and the granting of planning permission is what creates astronomical land values in the UK today.