The Price of Space: a square foot of home costs 18 times more in Kensington than Middlesbrough.
Almost nobody buys a home by the square foot, yet it is the fairest way to compare what housing actually costs. Matching 4.6 million sales to their EPC floor areas reveals a national market split 18-fold by geography, a new-build premium of around 10%, and new-build flats that are roughly a fifth smaller than the older ones they compete with.
Key findings
The £/sqft league table
Average price per square foot by postcode district for homes sold since 2024 (districts with 300+ matched sales). The spread is the story: the top of the table is central London; the bottom is the industrial North East and coastal towns.
A 900 sq ft flat costs about £83,000 in Middlesbrough and £1.47M in Kensington — the same box of air, priced 18 times apart. Every one of 1,842 districts is published free in our £/sqft data library.
The new-build premium — for less space
Two findings compound. First, buyers pay a premium per square foot for a new-build: a median of £332/sqft against £302 for resale, about 10% more. Second, new-builds — especially flats — deliver materially less space than the older homes they sit beside:
| Home | New-build floor area | Resale floor area | Difference |
|---|---|---|---|
| One-bed | 494 sq ft | 623 sq ft | −21% |
| Two-bed | 716 sq ft | 811 sq ft | −12% |
| Three-bed | 984 sq ft | 992 sq ft | −1% |
The squeeze is concentrated at the smaller end, where first-time buyers cluster: a new one-bed flat is a fifth smaller than an older one, and costs more per foot of it. For developers the read is the opposite and just as useful — the market pays a real premium for new space, so the unit mix and the floor areas you choose move the appraisal more than the headline price does.
The next ten years — a scenario, not a forecast
Where prices go is genuinely uncertain, so this is a scenario model rather than a prediction. Median £/sqft rose from £280 in 2021 to £307 in 2025. Fitting a log-linear trend of about 1.8% a year as a central path — with a slow band (0.5%/yr, roughly the 2022–2025 plateau) and a fast band (3.5%/yr) to bracket the uncertainty — projects the median square foot as:
| Year | Slow · 0.5%/yr | Central · 1.8%/yr | Fast · 3.5%/yr |
|---|---|---|---|
| 2026 | £309 | £313 | £318 |
| 2027 | £310 | £318 | £329 |
| 2028 | £312 | £324 | £340 |
| 2029 | £313 | £330 | £352 |
| 2030 | £315 | £336 | £365 |
| 2031 | £316 | £342 | £377 |
| 2032 | £318 | £349 | £391 |
| 2033 | £319 | £355 | £404 |
| 2034 | £321 | £361 | £418 |
| 2035 | £323 | £368 | £433 |
| 2036 | £324 | £375 | £448 |
On the central path a square foot of the median home reaches about £375 by 2036 — up roughly a quarter — within a plausible range of £324 to £448. The precise number is unknowable; the mechanism is the point. Because the market prices space, even modest per-square-foot growth compounds into a large cash swing across the floor areas a developer chooses to build. Treat these as illustrative bands for stress-testing an appraisal, not as a house-price forecast.
Quotable summary
"Measured by the square foot, England and Wales is not one housing market but eighteen stacked on top of each other — a foot of home costs £92 in Middlesbrough and £1,633 in Kensington. The new-builds sold as the answer to the shortage are, at the smaller end, about a fifth smaller than the older homes beside them while costing around 10% more per square foot — and on a central trend the price of that square foot rises about a quarter by 2036."
Method
- Sales: HM Land Registry Price Paid Data, 4.6 million residential transactions across England & Wales, 2021–2026.
- Floor area: each sale matched to its EPC-register total floor area, giving a true price per square foot rather than a per-bedroom proxy.
- £/sqft figures: computed on sales since January 2024 for currency; district averages use districts with 300+ matched sales; extreme outliers (below £40 or above £5,000 per sqft) are excluded.
- New-build premium: median £/sqft of Land-Registry-flagged new-build sales against resale sales over the same period.
- Floor areas by type: mean EPC floor area by bedroom count, new-build versus resale, over the same period.
- The ten-year scenario: annual median £/sqft for 2021–2025 (£280 → £307) is fitted with a log-linear regression, giving a central growth rate of ~1.8%/yr; the slow (0.5%/yr) and fast (3.5%/yr) bands bracket it. Values compound from the 2025 base. This is an illustrative sensitivity model, not a forecast — it assumes the historical trend broadly continues and takes no view on interest rates, supply or policy.
All source data is published under the Open Government Licence. Figures are statistical estimates for research and analysis; they are not valuations or investment advice.
How to cite
Journalists and researchers are welcome to republish these figures, tables and findings with attribution and a link. For a £/sqft cut of any town, district or constituency, contact sales@threshold-map.com — we can usually turn a bespoke local analysis around same-day.
More Threshold research
Published July 2026. Data: HM Land Registry Price Paid Data; Energy Performance of Buildings Register (EPC). Contains public sector information licensed under the Open Government Licence v3.0. Threshold is a James Hayes Consulting product.