Land by postcode · WD area · Kings Langley
Kings Langley covers the WD4 postcode district, in Hertfordshire. Planning applications here are decided mostly by the Dacorum planning authority, with Three Rivers covering the rest. Below: what homes sold for, which planning controls apply, and what that means before you sell or develop a plot in Kings Langley.
Residential sales recorded by HM Land Registry between 2024-08 and 2026-07 across the WD4 district. This is market context for the town, not a land valuation: what a plot is worth depends on what can be built on it, which these figures do not show.
Sales in 24 months
301
Median sale price
£570,000
Median £ per m² of floor area
£5,869
Median, last 12m vs prior 12m
+1.3%
£565,000 → £572,500
Mix of sales: 34% detached, 23% semi-detached, 16% terraced, 27% flats.
New-build sales 2023–2024: 49 of 340 (14%). A rough proxy for recent building activity: these are homes sold by builders, not development sites.
For each designation on the planning.data.gov.uk register, the share of the 373 live postcodes in WD4 whose centroid falls inside it. This measures postcodes, not land area, and says nothing about any individual plot.
186 of 373 postcodes
51 of 373 postcodes
Chipperfield · Kings Langley · Hunton Bridge
No postcodes in WD4 fall inside: National Landscape (AONB), National Park, Article 4 Direction area.
Flood zones, tree preservation orders, local plan allocations, settlement boundaries and non-designated heritage are not included here and are checked in a full assessment.
50% of postcodes in Kings Langley are inside the Green Belt. National policy treats most new building in the Green Belt as inappropriate unless it falls within a defined set of exceptions, so for a plot here the first fact to establish is which side of the Green Belt boundary it sits on.
These are town-level facts. The free assessment checks your actual boundary against the same registers and the local plan and tells you plainly what they mean for your plot.
Kings Langley is split between planning authorities: Dacorum (56% of sampled postcodes), Three Rivers (40%).
Draw your boundary, tell us what you own, and an architect checks it against these registers and the local plan. Free, no obligation, and you get a straight written answer.
It depends on where the plot sits, not on the town average. Across Kings Langley, 50% of postcodes are in the Green Belt and 14% in a conservation area. on Green Belt or National Landscape plots a new home is the exception and needs a specific case, and a replacement dwelling, a conversion or a modest extension is usually the realistic route. Outside those designations the questions that decide it are whether the plot is inside or adjoining the settlement boundary in the local plan, whether it has its own road access, and what is next to it.
No Article 4 direction is recorded for Kings Langley, so houses keep their normal permitted development rights for outbuildings and extensions within the size limits. Those rights do not extend to agricultural land, paddocks or a change of use to residential, which normally need permission or prior approval.
Developers look at three things before they talk about price: whether the plot is outside the Green Belt and any National Landscape, whether it sits inside or beside the settlement boundary, and what finished homes sell for. In Kings Langley the median sale is £570,000, and only 14% of 2023–2024 sales were new-build homes, so builders have been quiet here. A single plot usually goes to a local builder or a self-builder; a site for five or more homes attracts regional housebuilders, normally through an option or a conditional contract rather than an outright purchase, so the price you see quoted is not the price you receive.
There is no town figure for land, because a plot's value comes from what can be built on it, not from where it is. As a guide, a serviced plot with consent for one house commonly sells for around a third of the finished house value, which in Kings Langley would be measured against a £570,000 median sale. The same plot without consent, or inside the Green Belt, is worth a small fraction of that, and a paddock with no realistic route to consent is worth agricultural or amenity value only. The free check tells you which of those your plot is before you talk to anyone about a price.
Computed from open-data records; town-level, not plot-level measurements. Kings Langley here means the postcode district whose most common post town is Kings Langley. Sales: HM Land Registry Price Paid Data (2024-08-01 to 2026-07-31), © Crown copyright, Open Government Licence. Designations: planning.data.gov.uk (OGL); conservation areas and Article 4 directions are made locally and published on that national register. Postcode centroids: OS Code-Point Open, contains OS data © Crown copyright and database right 2026. Figures computed 2026-10-19.