Land by postcode · SM area · SM4
What the open records say about the SM4 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 Morden.
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
603
Median sale price
£500,000
Median £ per m² of floor area
£6,442
Median, last 12m vs prior 12m
-2.2%
£506,000 → £495,000
Mix of sales: 1% detached, 17% semi-detached, 60% terraced, 22% flats.
New-build sales 2023–2024: 0 of 650 (0%). 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 581 live postcodes in SM4 whose centroid falls inside it. This measures postcodes, not land area, and says nothing about any individual plot.
31 of 581 postcodes
Upper Morden · Wandle Valley
No postcodes in SM4 fall inside: Green Belt, 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.
None of these designations covers more than a small share of postcodes in SM4. What can be built on a given plot is decided by the local plan, settlement boundaries and site-specific matters such as access, flood risk and neighbours, none of which this page measures.
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 SM4 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. 32 decided since 2021, 10 refused, typically 165 days to a decision.
21 of 32
approved, 66%
47% across London
46 homes approved of 62 applied for
Approved examples
Martin Cafe, 192 Martin Way (5 new homes)
ERECTION OF AN ADDITIONAL STOREY TO PROVIDE 5 x SELF-CONTAINED FLATS, ALONG WITH REFUSE AND CYCLE STORAGE PROVISION
Approved 2022-01-26, Merton ref 21/P1856
Costa Coffee, 64 London Road (5 new homes)
ERECTION OF AN ADDITIONAL 3 STOREYS TO PROVIDE 5 X SELF CONTAINED FLATS WITH ASSOCIATED PARKING AND REFUSE
Approved 2022-07-12, Merton ref 21/P3384
125A Monkleigh Road, Morden (1 new home)
SEPARATION OF EXISTING GROUND FLOOR SELF-CONTAINED ANNEX LINKED TO EXISTING PROPERTY TO PROVIDE INDEPENDENT SELF-CONTAINED 1 BEDROOM DWELLIN...
Approved 2022-06-10, Merton ref 22/P0525
By the kind of plot, from the wording of each proposal:
16 decided since 2021, 7 refused, typically 129 days to a decision
9 of 16
approved, 56%
43% across London
Approved examples
NIGHTINGALE HOUSE, 35A Florence Avenue
ERECTION OF 2 x 2 BEDROOM DWELLINGHOUSES AT THE REAR SECTION OF LAND AT 35 FLORENCE AVENUE, MORDEN. ALONG WITH ASSOCIATED PARKING, EXTERNAL ...
Approved 2021-07-30, Merton ref 21/P1233
Martin Cafe, 192 Martin Way
ERECTION OF AN ADDITIONAL STOREY TO PROVIDE 5 x SELF-CONTAINED FLATS, ALONG WITH REFUSE AND CYCLE STORAGE PROVISION
Approved 2022-01-26, Merton ref 21/P1856
Costa Coffee, 64 London Road
ERECTION OF AN ADDITIONAL 3 STOREYS TO PROVIDE 5 X SELF CONTAINED FLATS WITH ASSOCIATED PARKING AND REFUSE
Approved 2022-07-12, Merton ref 21/P3384
Also decided here: 30 applications for outbuildings, annexes or garden buildings, 24 approved, typically 58 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.
Merton covers 92% of the sampled postcodes in SM4. The remaining 8% of postcodes fall under authorities not resolved for this page.
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 SM4, 0% of postcodes are in the Green Belt, 5% 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.
No Article 4 direction is recorded for SM4, 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 SM4 the median sale is £500,000, and only 0% 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 SM4 would be measured against a £500,000 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: Merton's 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.