Land by postcode · DA area · DA15
What the open records say about the DA15 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 Sidcup.
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
771
Median sale price
£458,000
Median £ per m² of floor area
£5,722
Median, last 12m vs prior 12m
+2.2%
£455,000 → £465,000
Mix of sales: 7% detached, 36% semi-detached, 41% terraced, 16% flats.
New-build sales 2023–2024: 36 of 711 (5%). 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 499 live postcodes in DA15 whose centroid falls inside it. This measures postcodes, not land area, and says nothing about any individual plot.
37 of 499 postcodes
Christ Church · The Hollies · Willersley Avenue and Braundton Avenue · Halfway Street · COA00000703 and 3 more
No postcodes in DA15 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 DA15. 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 DA15 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. 69 decided since 2021, 28 refused, typically 88 days to a decision.
37 of 69
approved, 54%
47% across London
65 homes approved of 109 applied for
Approved examples
1 Gordon Road Sidcup Kent DA15 8SX (1 new home)
Demolition of existing garage, erection of a 3 bed attached house incorporating a basement level, and provision of a basement level to the e...
Approved 2021-10-13, Bexley ref 21/00760/FUL
124 Ramillies Road Sidcup Kent DA15 9HZ (1 new home)
Erection of one x 3 bed end of terrace dwelling with associated parking and amenity space.
Approved 2022-05-19, Bexley ref 22/00004/FUL
12 Blackfen Road Sidcup Kent DA15 8SN (1 new home)
Erection of detached 4 bedroom dwelling house to form 14 Blackfen Road
Approved 2022-07-07, Bexley ref 22/00530/FUL
By the kind of plot, from the wording of each proposal:
5 decided since 2021, 5 refused, typically 81 days to a decision
0 of 5
approved, 0%
36% across London
42 decided since 2021, 19 refused, typically 89 days to a decision
17 of 42
approved, 40%
43% across London
Approved examples
1 Gordon Road Sidcup Kent DA15 8SX
Demolition of existing garage, erection of a 3 bed attached house incorporating a basement level, and provision of a basement level to the e...
Approved 2021-10-13, Bexley ref 21/00760/FUL
101 Old Farm Avenue Sidcup Kent DA15 8AJ
Erection of 1 x 3 bed bungalow to rear of existing property with associated parking and amenity space.
Approved 2021-12-22, Bexley ref 21/01221/FUL
Land Rear Of 1 And 1A Lamorbey Close Sidcup Kent DA15 8BA
Erection of 1 x 3 bed detached chalet bungalow with associated amenity space and parking.
Approved 2022-08-12, Bexley ref 21/03403/FUL
Also decided here: 23 applications for outbuildings, annexes or garden buildings, 19 approved, typically 56 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.
Bexley covers 97% of the sampled postcodes in DA15.
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 DA15, 0% of postcodes are in the Green Belt, 7% 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 DA15, 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 DA15 the median sale is £458,000, and only 5% 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 DA15 would be measured against a £458,000 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: Bexley'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.