Planning and constraints
Green belt
Land around cities designated to prevent urban sprawl, where new building is inappropriate except in defined circumstances; one of the designations MarketCode checks live.
Also called: green belt land, green belt check, grey belt.
Definition
Green belt, as the data uses it
Green belt covers about 12.6% of England, in rings around London, Birmingham, Manchester and other cities. National policy treats most development in it as inappropriate and requires very special circumstances to permit it, so a parcel inside the belt is a different proposition from one just outside.
MarketCode checks green belt for any location in the planning designations tool and carries it into the site dossier. The sourcing search accepts it as a filter; where a constraint is accepted but its backing column is still being populated, the response says so under filters not yet enforced, and results should be read as unfiltered on that dimension.
Tools
Tools that return it
Planning designations at a location
planning_designations()Every planning designation affecting a location, in one call: conservation
Site appraisal dossier
site_appraisal()Everything known about ONE site, assembled and judged — the site dossier.
Search land or units by criteria
sourcing_search()Find land parcels or residential units matching investment criteria — the sourcing tool. Give a `location` (place or area name) or a `bbox`.
See also
Related terms
- Brownfield land: Previously developed land; local authorities keep a register of brownfield sites suitable for housing, which MarketCode reads as a designation.
- Conservation area: An area a local planning authority has designated for its special architectural or historic character, where demolition and many external changes need consent.
FAQ
Questions about green belt
What does Green belt mean?
+
Land around cities designated to prevent urban sprawl, where new building is inappropriate except in defined circumstances; one of the designations MarketCode checks live.
Which MarketCode tools return green belt?
+
Planning designations at a location, Site appraisal dossier, Search land or units by criteria. Each runs as an MCP tool in Claude, ChatGPT, Codex and Cursor and as a REST endpoint with an API key, at the same price.
Is green belt check the same thing?
+
Yes. green belt land, green belt check, grey belt are other names for what this entry defines; MarketCode uses "Green belt" in its tool descriptions and responses.
See it on a real address.
Thirty minutes, your property or area, every figure sourced.