How to find development land in the UK

Finding a site is the hardest part of small-scale development. Agents' lists are picked over, portals rarely carry raw land, and by the time a site is openly marketed the margin is usually in someone else's price. There is, however, a national dataset of land that local authorities themselves consider appropriate for housing — and it is free.

The brownfield land registers

Since 2017 every local planning authority in England has had a statutory duty to publish a brownfield land register: previously developed land the authority considers appropriate for residential development. Each entry records the site's area, the authority's estimate of net dwelling capacity, ownership status, whether planning permission exists, and whether the authority regards it as deliverable.

Registers are published in a standard format and aggregated nationally on planning.data.gov.uk under the Open Government Licence. Roughly 37,000 entries are live across England.

What the registers do and do not tell you

• They do tell you an authority has already judged the land suitable in principle, and how many homes it thinks fit.
• They do not tell you the land is for sale, or what it would cost.
• Currency varies enormously. Authorities publish on their own timetable and many have not refreshed in years, so always check the entry's last-updated date before acting.
• Boundaries are patchy. Most entries carry only a point, not a polygon.

Checking ownership

No free national dataset names the owner of a parcel. HM Land Registry sells a free property summary and a £7 title register, which usually names the proprietor, through gov.uk. Corporate and overseas ownership data (CCOD and OCOD) is published free but is keyed by title number — which the open boundary data does not carry — so it cannot be joined to a map position without a licence.

Screening a site before you visit

Once you have a candidate, the questions that kill sites are cheap to answer: is it in Flood Zone 3, green belt or a conservation area? Airship checks those automatically and flags them in the search results, using live UK planning constraint data.

Doing it in Airship

Airship Site Designer's Development Finder searches the registers by location, area and capacity, flags the constraints, and puts the site boundary straight onto the canvas so you can generate a layout and appraise the numbers in the same session. Sites you like go on a shortlist that compares area, density, local values and an indicative margin side by side.

Register data is indicative and published by third parties — verify site area, capacity, ownership and planning status directly with the local planning authority before committing to anything.