About the data

Sources

HM Land Registry Price Paid Data — the price, date, address, property type, tenure and new-build flag of every registered sale of residential property in England and Wales. Published monthly, on the 20th working day. This is the price the buyer actually paid, filed as part of registering the title.

The Energy Performance of Buildings Register (MHCLG) — Energy Performance Certificates carry a surveyed total floor area in square metres, along with habitable-room counts and the property type as inspected. Price Paid Data has no floor area, so the EPC register is the only open source that makes £/m² possible at all.

The pilot covers the six East Sussex local authorities — Brighton and Hove, Eastbourne, Hastings, Lewes, Rother, Wealden — holding 38,714 sales from 3 Jan 2023 to 29 Jun 2026.

How price per square metre is worked out

Each sale is matched to the Energy Performance Certificate for the same address, then divided: sale price ÷ total floor area. The match runs inside a postcode, through four passes in order — an exact match on the full address, a house-level match on street plus house number where neither record has a flat number, a numeric house-number match where the street text diverges, and a flat-token pass for split addresses. Where a property has several certificates, we take the one lodged nearest the sale date.

That matches 94.5% of sales here (36,579 of 38,714). Flats match less often than houses, because flat numbering is recorded inconsistently in both registers. Sales we cannot match still count towards every price median and sales count — they are simply absent from the £/m² figures. That one figure is computed from the loaded extract and used everywhere it appears on this site; it is not typed into a page.

Records are dropped before any figure is calculated when:

• the Land Registry marks them deleted, or as Category B (repossessions, transfers that are not arm's-length sales, and other non-standard transfers) — Category B is excluded from every statistic here, including sale counts, which is why our counts run slightly below a raw Price Paid extract;
• the same address, date and price appears twice under two transaction ids, which happens when the Land Registry files an amendment alongside the original rather than replacing it — 34 rows in this extract, collapsed to one;
• the floor area falls outside 9–974 m², or implies less than 6.5 m² or more than 100 m² per habitable room — a sign the certificate is mismatched or mistyped;
• the resulting £/m² falls outside £200–£50,000.

How accurate is the floor area?

This is the fair question to ask of everything here, and it deserves a straight answer rather than silence. An EPC's total floor area is measured by an assessor on site to a published convention (RdSAP), and people do occasionally find it 20 m² adrift of a professional re-measurement of their own home. So: it is not a survey, and no single figure on this site should be treated as one.

What it is — and this is the part that matters for comparing homes — is one measure, defined the same way, applied to every property. That is not true of the alternative. Agent floor plans are inconsistently defined between agencies and often within one: sheds, lofts, garages, porches and conservatories are counted by some and not by others, and the industry has never settled the question. An inconsistent measure with a small average error is worse for comparison than a consistent measure with a slightly larger one, because the inconsistency does not cancel out — it moves whichever way each individual listing was drawn up.

A £/m² figure here is a median over many such measurements, which is where the consistency pays: individual errors are as likely to be high as low and largely wash out of the median, while a systematic difference in what counts as floor area would not.

The known failure modes, stated rather than hidden:

• Whole-building certificates on flats. A certificate lodged for a converted house is sometimes matched to a flat inside it, giving a flat an implausible floor area and a correspondingly wrong £/m².
• Stale certificates. An EPC is valid for ten years. A certificate lodged before an extension describes the house as it was, not as it sold.
• Address ambiguity. The join blocks on the postcode and matches on address text; a badly-recorded flat number in either register can attach the wrong certificate.

Against the first of those we run a plausibility test before publishing anything derived from a floor area: a type-aware band (flats 20–200 m², houses 30–500 m²) and an outlier test against the same property type in the same postcode sector. Where a floor area fails, the sale is published and the £/m² is not — the price is a fact filed with HM Land Registry, and the floor area is an inference from an address join, so we drop the inference and keep the fact rather than the other way round. Those rows are marked in the sales tables. It currently affects 369 of 36,579 matched sales (1%), and those sales are excluded from every £/m² median on the site as well as from their own row.

For the second and third we have no test, and we do not pretend to. If you know a property's real floor area and this site disagrees, the certificate is the thing to check — it is public, and a re-lodged certificate flows through here at the next monthly refresh.

How much history is here

This extract covers 3 Jan 2023 to 29 Jun 2026. A longer Price Paid history — enough for a ten-year trend, and for what a house sold for a decade ago — is a later ingest, not a gap in what is published here.

There is a shortcut we are not taking. Splicing an official house price index into the earlier years would draw a ten-year line today — but an index is a modelled series, not a set of recorded transactions, and the promise on the front page of this site is that every number is something a buyer actually paid. A modelled figure in a chart of recorded medians would break that promise in the one place a reader is least likely to notice it.

What we will not publish

A median off a handful of sales is noise dressed as fact, so there are floors. A town gets a page at 50 sales over three years, a postcode district at 30. Below that the area rolls up into the one that covers it rather than getting a thin page. Any individual median — a £/m² figure, a year, a property type — needs 12 salesbehind it or the page shows a dash instead of a number. That is why 25 towns and 15 postcode districts appear here and smaller villages do not.

There is a second, higher floor that governs emphasis rather than publication. A year-on-year percentage is quotable at 12 sales in each window but is only drawn in colour, or as a solid bar, above 30 sales in each. Between the two it prints in plain ink with its sale count beside it. Colour is the most salient thing in a table, and giving a village's sixteen sales the same red as a city's two thousand tells the reader they are the same kind of fact when they are not.

Where a postcode district holds exactly the sales of one town and nothing else — Seaford and BN25, Hailsham and BN27 — there is one page, not two. The town page carries it and names the postcode district throughout, because two pages built from an identical set of sales would say the same thing twice. Postcode districts that genuinely subdivide a larger town, such as BN1 and BN2 inside Brighton, keep their own pages: they hold different sales.

We publish no bedroom counts, because neither register records them. We publish no valuations, indexed prices or forecasts. A median tracks what sold, so a change in the mix of homes coming to market moves it as much as prices do — read year-on-year figures with that in mind.

The most recent months are always incomplete. Registration follows completion, sometimes by several months, so the newest bar on any chart will keep rising after publication. The extract behind this build ends 29 Jun 2026.

Updates

HM Land Registry publishes Price Paid Data monthly and the EPC register updates monthly too. The site is rebuilt from a fresh extract on that cadence; the vintage stamp in the footer of every page tells you exactly which extract you are reading. Current build: June 2026 data, pages generated 27 Aug 2026.

Personal data and the EPC register

Address-level EPC records are treated as personal data, and republishing them makes this site a data controller under the UK GDPR and the Data Protection Act 2018. EPC data is used here solely to explain the energy efficiency and size of homes in the sale market — purpose 5 of the register's permitted purposes. The register supports removal requests; removals are honoured at each monthly refresh, and nothing is retained once it leaves the source register. The privacy notice sets out who the controller is, the lawful basis, what is processed, how long it is kept, how to object or ask for removal, and the route to the Information Commissioner's Office.

Addresses from Price Paid Data are shown as residential property price information and nothing else. There is no address export, no bulk download of address data, and no address lookup detached from price information. If you want the underlying data, take it from HM Land Registry directly, where it is free.

Attribution

Everything on this site is built from public sector information licensed under the Open Government Licence v3.0. The statements each Information Provider requires are reproduced below in full.

HM Land Registry Price Paid Data

Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Price Paid Data contains address data processed against Ordnance Survey's AddressBase Premium product, which incorporates Royal Mail's PAF® database. Royal Mail and Ordnance Survey permit the use of that address data for personal and non-commercial use, and to display for the purpose of providing residential property price information services. This site relies on the second permission. Any other use of the address data requires permission from Royal Mail (address.management@royalmail.com).

HM Land Registry INSPIRE Index Polygons

Used for the parcel outlines on the map. Parcels are indicative extents only — the extent of the land in a registered title can only be established from that title's own plan.

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry.

The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063.

Conditions of use for the INSPIRE Index Polygons.

Energy Performance of Buildings Register

Energy Performance Certificate data © Crown copyright, Ministry of Housing, Communities and Local Government, licensed under the Open Government Licence v3.0.

All EPC fields other than the address and postcode fields are licensed under the OGL v3.0, including Ordnance Survey UPRNs. The address and postcode fields are covered by the Ordnance Survey and Royal Mail Copyright and Database Right Notice, which permits their use solely for specific purposes related to the energy performance of buildings. The purpose this site relies on is, verbatim:

Promotion and better understanding of the current energy efficiency of buildings and potential improvement in the building sale or rental markets and/or by building occupiers or users.

That notice requires the notice itself to travel with the data: "Where you publish or otherwise share address data with any other person for any of the purposes permitted under this copyright and database right notice, you must include a copy of this copyright and database right notice with the data." It is reproduced in full at get-energy-performance-data.communities.gov.uk/guidance/licensing-restrictions. Any use of the address data outside the permitted purposes requires a licence from Ordnance Survey (PricingLicensing@os.uk) or Royal Mail (address.management@royalmail.com).

Office for National Statistics

Applies to postcode-directory and boundary products, and to the CPIH series, once they feed a published feature:

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026.

Northern Ireland postcodes (those beginning BT) are excluded from any ONS postcode-directory feature, as their commercial use requires a separate licence from Land and Property Services. Price Paid Data, the INSPIRE polygons and the EPC register cover England and Wales only.

Independence

PerSquare is an independent site. Nothing here implies official status, and neither HM Land Registry, the Ministry of Housing, Communities and Local Government, the Office for National Statistics nor Ordnance Survey endorses this site or its use of their data.

Corrections and contact

If a sale is recorded wrongly, the correction has to happen at source — HM Land Registry's Price Paid Data is what we rebuild from each month, so a fix there flows through at the next refresh. The same is true of a floor area: the Energy Performance Certificate is the record, and a re-lodged certificate arrives here on the next refresh.

If a figure on this site does not follow from the data as described above, that is our bug and we want to hear about it — [Contact address to be confirmed before launch]. For anything about personal data, including removals, see the privacy notice.