Green Belt
Protected open land around towns and cities
Green Belt is a planning designation that keeps land around towns and cities permanently open. Its purpose is to check urban sprawl and stop neighbouring towns merging. Local planning authorities draw the boundaries in their local plans. Each UK nation sets its own policy; Wales has the framework but very little designated green belt.
What This Means
Green Belt controls what gets built, not how you live, so decoration, repairs and maintenance are untouched. Normal householder permitted development rights apply in full here. Many extensions, loft conversions and outbuildings need no planning application at all. What the designation refuses is inappropriate development, such as a new house in the garden. In England, an application for that is refused unless very special circumstances outweigh the harm. National planning policy sets that test deliberately high. This does not normally affect mortgage approval, buildings insurance or resale.
Practical Advice
- Ask the local planning authority to confirm where the Green Belt boundary runs across this plot on the local plan policies map.
- Ask the local planning authority for a lawful development certificate if you want the permitted development position in writing.
- Ask a planning consultant for an opinion on very special circumstances before you offer on a plot you intend to build on.
- Ask the local planning authority whether the site is grey belt under the National Planning Policy Framework as revised in December 2024.
Key Points
- Replacing a bungalow with a house of similar size is usually acceptable; replacing it with one twice the footprint is refused as inappropriate development.
- The December 2024 revision of national planning policy created grey belt: poorer-quality Green Belt land, such as a disused petrol station or car park, where housing can now be permitted.
Additional Information
Green Belt boundaries change only through a local plan review, not through individual planning decisions. Reviews are open to public comment. The link below is England guidance; the other nations publish their own.