How to use price per square metre when you buy your first home

Every property listing tells you the asking price. Almost none tell you the price per square metre — and that is the number that lets you compare two homes honestly. A £450,000 two-bed flat and a £450,000 three-bed terrace are not the same purchase, and until you divide by floor area you have no way of saying which one is dear.

This guide is about doing that division, using the median price per square metre actually paid in the area you are buying in. All the figures below come from HM Land Registry sold prices matched to Energy Performance Certificate (EPC) floor areas, over a rolling 12 months of sales unless stated otherwise. They are what people paid, not what anyone is asking.

Step 1: find the median for the area

Start with the district page for the outward code you are searching in. The headline figure is the median price per m² — half the matched sales were above it, half below. Some real examples, all from 12 months of registered sales:

• DE1, Derby — £2,234/m² across 123 sales (12 months)
• GL1, Gloucester — £2,579/m² across 380 sales (12 months)
• CF11, Canton in Cardiff — £3,095/m² across 427 sales (12 months)
• LS6, Meanwood in Leeds — £3,256/m² across 297 sales (12 months)
• M4, central Manchester — £3,415/m² across 274 sales (12 months)
• NR1, Norwich — £3,134/m² across 340 sales (12 months)
• EX1, Exeter — £3,607/m² across 306 sales (12 months)
• BS1, Redcliffe in Bristol — £4,870/m² across 147 sales (12 months)

London entry points sit higher, but the spread inside the capital is wider than most people expect: IG11, Barking is £4,679/m², CR7, Thornton Heath £4,737/m², SE28, Thamesmead £4,844/m² and RM10, Dagenham £4,926/m², against E17, Walthamstow at £7,805/m² and SW11, Battersea at £9,312/m². That is the same city, and roughly double the price for the same square metre.

Step 2: work out the £/m² of the home you are viewing

Divide the asking price by the internal floor area. The floor area is on the property’s EPC, which is free to look up on the Energy Performance of Buildings Register and is usually the same figure the surveyor will use. If the listing quotes square feet, divide by 10.7639 to get square metres (1 m² = 10.7639 ft²), or switch any RealScout area page to ft².

Step 3: use the middle 60%, not just the median

Every area page shows the middle 60% of matched sales (the 20th to 80th percentile, p20–p80). It is the honest measure of how much variation an area contains. In SW11 that band runs £7,240–£11,452/m²: a 58% gap between an ordinary flat and a good house, inside one district. In M4 it is £2,818–£4,385/m².

Practically: if a flat prices out above p80 for its district, the premium has to come from something you can name — a river view, a new lease, a garden, an unusually good street. If you cannot name it, you are probably paying for the presentation.

Leasehold and freehold are different markets

Flats and houses trade on different per-square-metre curves, and which way round the gap falls depends on the area, so it pays to read the tenure split rather than assume it. Over 12 months of sales:

• SW19, Wimbledon — freehold £9,150/m² (341 sales) against leasehold £7,122/m² (425 sales)
• M20, Didsbury — freehold £4,540/m² (331 sales) against leasehold £4,083/m² (281 sales)
• CF11, Canton — freehold £3,350/m² (243 sales) against leasehold £2,863/m² (184 sales)
• SE18, Plumstead — the other way round: leasehold £5,597/m² (223 sales) against freehold £5,300/m² (203 sales)

Compare like with like. A leasehold flat should be measured against the leasehold median, and then adjusted in your head for the two things the sold-price data cannot see: the years left on the lease and the annual service charge. A short lease is a repair bill with a deadline.

The new-build premium is real, and it varies enormously

New-build homes sell at a premium per square metre over existing stock, and the size of that premium is measurable. In the current 12 months of sales it ranges from a rounding error to more than half again:

• SW11, Battersea — new builds at £15,487/m², a premium of 66.3% over the district median (37 new-build sales, 12 months)
• E16, Canning Town — +47.2% (83 new-build sales)
• M4, Manchester — +42.2% (48 new-build sales)
• NP20, Newport — +31.4% (10 new-build sales)
• IG11, Barking — +5.7% (12 new-build sales)
• E17, Walthamstow — +0.5% (16 new-build sales)
• OX11, Didcot — −2.8% (40 new-build sales)

Some of that premium buys real things: a warranty, insulation, low running costs, no chain. Some of it is simply what a show home extracts from a buyer who has nothing to compare against. Knowing which district you are in tells you how hard to negotiate — and the premium in a district where new builds are barely dearer than the existing stock is a much easier purchase to justify.

Where the same budget buys more space

The most useful thing about a per-square-metre view is that it turns your deposit into a number of square metres. £250,000 buys roughly 97 m² at GL1’s £2,579/m², about 86 m² at SN1, Swindon Old Town (£2,895/m²), around 70 m² at S11, Sheffield (£3,586/m²) and about 41 m² in E15, Stratford(£6,111/m²). Same money, two and a half times the floor space.

Stamp duty: the one relief worth planning around

In England and Northern Ireland, first-time buyer relief means Stamp Duty Land Tax (SDLT, the tax on the purchase) is nil up to £300,000 and 5% on the slice from £300,001 to £500,000. Above £500,000 the relief is withdrawn completely and the standard rates apply, so a £510,000 purchase costs a first-time buyer £13,000 in SDLT where £500,000 costs £10,000. Wales charges Land Transaction Tax instead, on its own bands. Every RealScout area page shows both the standard and first-time buyer figures at the local median price on its affordability tab.

What price per square metre will not tell you

It is a statistic about past sales in an area, not a judgement about a building. It cannot see condition, aspect, noise, the state of the roof, the neighbours, or the lease. It is drawn from EPC floor areas, which occasionally contain mistakes. And in small areas with few matched sales the figure is fragile — which is why each page carries a confidence level and shows the underlying transactions, so you can look at the actual sales rather than trust an average.

Use it the way a surveyor would: as the reference point you argue from. Find the median, price the home you want against it, and make the seller explain the difference.

Sources

• Sold prices and sale counts: HM Land Registry Price Paid Data, full-market (category A) residential sales, rolling 12 months to 30 Jun 2026. Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
• Floor areas: Energy Performance of Buildings Register (England and Wales), matched to sales by address. Address data © Royal Mail.
• Stamp Duty Land Tax rates and first-time buyer relief: HMRC, rates effective from 1 April 2025.
• Method, filters and confidence levels: see the RealScout methodology page.