Section 293 of the Town and Country Planning Act 1990 defines Crown Land as land in which there is a Crown or a Duchy Interest. This is an interest belonging to a government department or held in trust for the Crown for the purposes of a government department and any interest the secretary of state specifies. This includes a collection of lands and buildings which are occupied and serve any department, office or executive agency of the Crown.
The Town and Country Planning Act 2016 applies to the Crown estate in the same manner as any other development meaning that the Crown would be required to apply to the local authority for planning permission if they want to develop.
Read Manuella Nguessan’s, Neighbourly Matters article in the Daylighting Magazine, explaining Section 263 of the Town and Country Planning Act 1990 in relation to the Right to Light – an easement that gives a landowner the right to receive light through defined apertures over neighbouring land.