Land by postcode · W area · W4
What the open records say about the W4 postcode district in Greater London: recent sales, planning designations and controls, and the council that decides applications. District-level facts to read before you sell or develop a plot in Hounslow, London.
Residential sales recorded by HM Land Registry between 2024-08 and 2026-07. This is market context for the district, 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
1,157
Median sale price
£825,000
Median £ per m² of floor area
£11,909
Median, last 12m vs prior 12m
-4.1%
£845,000 → £810,000
Mix of sales: 3% detached, 12% semi-detached, 33% terraced, 52% flats.
New-build sales 2023–2024: 73 of 1,242 (6%). 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 1024 live postcodes in W4 whose centroid falls inside it. This measures postcodes, not land area, and says nothing about any individual plot.
516 of 1024 postcodes
Turnham Green · Wellesley Road · Bedford Park · Chiswick House · Grove Park and 3 more
760 of 1024 postcodes
3 separate directions recorded, each removing particular permitted development rights within a defined area.
No postcodes in W4 fall inside: Green Belt, National Landscape (AONB), National Park.
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 fall within a conservation area. Inside one, demolition needs consent, some permitted development rights are reduced, and new work is assessed against the character and appearance of the area.
74% of postcodes are covered by an Article 4 direction, which removes specific permitted development rights in that area, so changes that are automatic elsewhere need a planning application there.
These are district-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.
Decided planning applications in W4 since 2021, from the council registers, grouped by the kind of scheme a landowner might be weighing up. Extensions, conditions and tree works are left out. Counts, not estimates.
Taken from the units table on the planning form itself, so this is homes actually created, not a reading of the description. 124 decided since 2021, 43 refused, typically 93 days to a decision.
76 of 124
approved, 61%
47% across London
188 homes approved of 299 applied for
Approved examples
77 Whellock Road Chiswick London W4 1DY (1 new home)
Conversion of two self-contained flats into a single dwelling house
Approved 2022-12-20, Ealing ref 224616FUL
37 Kingscote Road Chiswick W4 5LJ (1 new home)
Construction of a two-storey dwellinghouse including excavation to provide a basement level (following demolition of existing garage)
Approved 2022-12-22, Ealing ref 224652FUL
12 Ravenscroft Road Chiswick W4 5EQ (1 new home)
Conversion of residential property comprising three existing self-contained flats into a single family dwellinghouse; and associated interna...
Approved 2023-04-18, Ealing ref 230793FUL
By the kind of plot, from the wording of each proposal:
3 decided since 2021, 1 refused, typically 52 days to a decision
2 of 3
approved
36% across London
Approved examples
9 DEVONSHIRE GARDENS, CHISWICK
Erection of a pergola to the rear of the house
Approved 2021-02-25, Hounslow ref P/2021/0019
HALFWAY HOUSE 16A GROVE PARK GARDENS, CHISWICK
Minor alterations to infill an existing lower ground floor courtyard garden to the rear of the house to create a new internal pool-side kitc...
Approved 2022-06-22, Hounslow ref P/2022/1096
44 decided since 2021, 19 refused, typically 100 days to a decision
19 of 44
approved, 43%
43% across London
Approved examples
11 Beaumont Road Chiswick London W4 5AL
Creation of internal courtyard to rear of existing flat
Approved 2022-04-08, Ealing ref 220869FUL
37 Kingscote Road Chiswick W4 5LJ
Construction of a two-storey dwellinghouse including excavation to provide a basement level (following demolition of existing garage)
Approved 2022-12-22, Ealing ref 224652FUL
29 Beaumont Road Chiswick W4 5AL
Construction of two storey dwellinghouse adjacent to existing terraced dwellinghouse
Approved 2025-11-18, Ealing ref 252908FUL
17 decided since 2021, 6 refused, typically 56 days to a decision
10 of 17
approved, 59%
45% across London
Approved examples
65 Whellock Road Chiswick W4 1DY
Conversion of two self-contained residential units into one single-family dwellinghouse; and associated internal alterations
Approved 2024-10-22, Ealing ref 243261FUL
6 CHURCH STREET, CHISWICK
Change of use of ground floor retail until to a one bedroom residential unit with associated internal alterations, alterations to existing f...
Approved 2022-02-25, Hounslow ref P/2021/3051
15 LONSDALE ROAD, CHISWICK
Conversion of two residential units into a single family house.
Approved 2022-06-13, Hounslow ref P/2022/0933
Also decided here: 65 applications for outbuildings, annexes or garden buildings, 52 approved, typically 70 days.
Decided planning applications (not extensions, conditions or tree works) in this postcode district from the councils' own registers, classified by the wording of each proposal. Counts, not estimates; where a class has fewer than three applications it is not shown.
W4 is split between planning authorities: Hounslow (76% of sampled postcodes), Ealing (24% of sampled postcodes).
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 district average. In W4, 0% of postcodes are in the Green Belt, 50% in a conservation area. 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. A plot on the edge of a village or town with access has the best chance; an open field outside the settlement boundary rarely gets consent for housing whatever the market is doing.
Often, yes. 74% of postcodes in W4 are under an Article 4 direction (3 separate directions), which withdraws particular permitted development rights, so an outbuilding, extension or change of use that is automatic elsewhere needs an application there. Outside those areas, permitted development applies to houses and their gardens but not to agricultural land or paddocks, where a new building or a new use normally needs 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 W4 the median sale is £825,000, and only 6% 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 district 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 W4 would be measured against a £825,000 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.
Three places: the local plan and its policies map for the settlement boundary and allocations, the council's planning register for what has been approved or refused on neighbouring land, and planning.data.gov.uk for the national designations. That is an evening's work if you know what you are looking for. The alternative is to draw your boundary on this site: an architect checks it against the same records and writes back within 48 hours with a plain answer, free and without obligation.
Computed from open-data records; district-level, not plot-level measurements. 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), retrieved 2026-09-05; conservation areas and Article 4 directions are made locally and published on that national register. Postcode centroids: OS Code-Point Open 2026.3.0, contains OS data © Crown copyright and database right 2026. Place name is the most common post town in the sales records. Figures computed 2026-09-06.