Land by postcode · SW area · SW20
What the open records say about the SW20 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 Merton, 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
717
Median sale price
£730,200
Median £ per m² of floor area
£9,705
Median, last 12m vs prior 12m
-2.2%
£736,000 → £719,670
Mix of sales: 5% detached, 18% semi-detached, 38% terraced, 39% flats.
New-build sales 2023–2024: 15 of 795 (2%). 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 570 live postcodes in SW20 whose centroid falls inside it. This measures postcodes, not land area, and says nothing about any individual plot.
101 of 570 postcodes
Wimbledon West · Copse Hill · Drax Avenue · Lambton Road · Wool Road and 3 more
No postcodes in SW20 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 SW20. 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 SW20 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. 35 decided since 2021, 7 refused, typically 174 days to a decision.
28 of 35
approved, 80%
47% across London
73 homes approved of 86 applied for
Approved examples
232 Worple Road, Raynes Park (1 new home)
CONVERSION OF TWO FLATS TO A SINGLE DWELLINGHOUSE
Approved 2021-03-22, Merton ref 21/P0408
The House Of Spice, 507 Kingston Road (1 new home)
APPLICATION FOR CHANGE OF USE OF GROUND FLOOR FROM RESTAURANT (CLASS E) TO PART RESIDENTIAL (CLASS C3) AND PART HOT FOOD TAKE AWAY TO CREATE...
Approved 2021-06-11, Merton ref 21/P0860
Flat 2, 582A Kingston Road (2 new homes)
CONVERSION OF EXISTING SELF-CONTAINED FLAT INTO 2 SELF-CONTAINED FLATS.
Approved 2022-06-09, Merton ref 21/P1182
By the kind of plot, from the wording of each proposal:
6 decided since 2021, 2 refused, typically 246 days to a decision
4 of 6
approved, 67%
41% across London
Approved examples
309 Martin Way, Raynes Park
CONVERSION OF SINGLE DWELLINGHOUSE INTO 2 X SELF-CONTAINED FLATS. ALONG WITH REFUSE, BIN STORES, EXTERNAL AMENITY SPACES, AND FORMATION OF V...
Approved 2021-08-11, Merton ref 21/P2342
98 Linkway, Raynes Park
CONVERSION OF SINGLE DWELLINGHOUSE INTO 2 X SELF-CONTAINED SINGLE DWELLINGHOUSES, INCLUDING ALTERATIONS TO FRONT ELEVATION, AMENITY SPACES A...
Approved 2022-12-12, Merton ref 22/P0620
91A Whatley Avenue, Raynes Park
CONVERSION OF A SINGLE DWELLING HOUSE INTO 2 FLATS, 3 BED GROUND FLOOR FLAT AND 2 BED UPPER FLOOR FLAT.
Approved 2025-10-20, Merton ref 23/P0041
9 decided since 2021, 3 refused, typically 180 days to a decision
5 of 9
approved, 56%
43% across London
Approved examples
Coop, 276 - 288 Kingston Road
REDEVELOPMENT OF PART OF CO-OP CAR PARK TO PROVIDE 9 APARTMENTS (USE CLASS C3) WITHIN A 3 STOREY BUILDING, TOGETHER WITH BIN AND BIKE STORAG...
Approved 2023-01-20, Merton ref 22/P2423
24B Cottenham Park Road, Wimbledon
DEMOLITION OF EXISTING BUILDING AND ERECTION OF 2 X FOUR STOREY SEMI-DETATCHED DWELLINGOHOUSES
Approved 2023-09-27, Merton ref 22/P3729
15 Ernle Road, Wimbledon
DEMOLITION OF THE EXISTING BUILDING AND ERECTION OF A NEW DETACHED HOUSE WITH EXCAVATION OF A CELLAR UNDER PART OF THE STRUCTURE.
Approved 2023-08-30, Merton ref 23/P0424
9 decided since 2021, 3 refused, typically 102 days to a decision
6 of 9
approved, 67%
49% across London
Approved examples
138 Copse Hill, Wimbledon
DEMOLITION OF EXISTING DWELLINGHOUSE AND ERECTION OF A NEW DWELLINGHOUSE.
Approved 2021-05-07, Merton ref 21/P0428
24 Hood Road, Wimbledon
DEMOLITION OF EXISTING HOUSE AND THE ERECTION OF A NEW DWELLINGHOUSE
Approved 2021-12-10, Merton ref 21/P2820
54 Drax Avenue, Wimbledon
DEMOLITION OF EXISTING DWELLINGHOUSE AND ERECTION OF NEW DETACHED DWELLINGHOUSE WITH BASEMENT LEVEL AND ROOMS IN ROOFSPACE
Approved 2022-04-20, Merton ref 21/P3756
5 decided since 2021, 2 refused, typically 164 days to a decision
3 of 5
approved, 60%
45% across London
Approved examples
458 Kingston Road, Raynes Park
CONVERSION OF SHOP INTO 1 X 1 BEDROOM FLAT
Approved 2023-12-14, Merton ref 23/P1826
Cunninghams, 564 Kingston Road
CONVERSION OF THE EXISTING GROUND FLOOR RETAIL UNIT AND CHANGE OF USE TO 1 NO.SELF-CONTAINED 1 BEDROOM FLAT, DEMOLITION OF THE EXISTING OUTB...
Approved 2024-06-13, Merton ref 23/P2989
3 Rectory Close, Raynes Park
CONVERSION OF GARAGE INTO HABITABLE ROOM INCLUDING INTERNAL LINKAGE TO THE EXISTING HOUSE AND ASSOCIATED INTERNAL WORKS.
Approved 2025-09-09, Merton ref 24/P3175
Also decided here: 41 applications for outbuildings, annexes or garden buildings, 37 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.
Merton covers 98% of the sampled postcodes in SW20.
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 SW20, 0% of postcodes are in the Green Belt, 18% 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 SW20, 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 SW20 the median sale is £730,200, and only 2% 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 SW20 would be measured against a £730,200 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.