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Thematic report · 5 min read read · Updated July 2026
Mind the Gap: Detached vs Flat Price Differentials Across England 2026
National gap: £275,750. County rankings from widest to narrowest spread.
01
The Price Type Spectrum
Across England and Wales, the national median house prices by property type are: Detached £436,250, Semi-Detached £297,000, Terraced £247,500, and Flats £160,500. The gap between detached and flat house prices — £275,750 or 172% — represents a key regional house price index metric for developers considering conversion and subdivision schemes.
This report is built from HM Land Registry Price Paid Data, the same transaction-level source underlying the official UK House Price Index, covering house prices and sales across England and Wales. Scotland and Northern Ireland use separate registration systems (Registers of Scotland and Land and Property Services) and are not included in this analysis.
02
Widest Price Gaps by County
| # | County | Detached Median | Flat Median | Gap (£) | Gap (%) |
|---|---|---|---|---|---|
| 1 | Greater London | £1,162,500 | £450,000 | £712,500 | +158.3% |
| 2 | Hertfordshire | £816,250 | £253,500 | £562,750 | +222.0% |
| 3 | Surrey | £824,000 | £264,000 | £560,000 | +212.1% |
| 4 | Buckinghamshire | £775,000 | £239,000 | £536,000 | +224.3% |
| 5 | Berkshire | £638,125 | £231,375 | £406,750 | +175.8% |
| 6 | Hampshire | £545,000 | £180,000 | £365,000 | +202.8% |
| 7 | Oxfordshire | £569,000 | £219,500 | £349,500 | +159.2% |
| 8 | Kent | £533,500 | £185,000 | £348,500 | +188.4% |
| 9 | Sussex | £556,500 | £210,000 | £346,500 | +165.0% |
| 10 | Gloucestershire | £488,750 | £160,000 | £328,750 | +205.5% |
| 11 | Warwickshire | £505,000 | £180,000 | £325,000 | +180.6% |
| 12 | Bedfordshire | £500,000 | £177,000 | £323,000 | +182.5% |
| 13 | Essex | £524,250 | £203,000 | £321,250 | +158.3% |
| 14 | Dorset | £509,500 | £190,750 | £318,750 | +167.1% |
| 15 | Wiltshire | £452,488 | £146,425 | £306,063 | +209.0% |
Greater London has the widest detached-to-flat gap at £712,500 (+158.3%). In these counties, converting a large detached house into flats can unlock significant value — provided planning consent is achievable and the local flat market has sufficient demand.
03
Narrowest Price Gaps
| # | County | Detached Median | Flat Median | Gap (£) | Gap (%) |
|---|---|---|---|---|---|
| 1 | Gwynedd | £309,375 | £125,875 | £183,500 | +145.8% |
| 2 | County Durham | £252,500 | £63,000 | £189,500 | +300.8% |
| 3 | Lincolnshire | £294,000 | £102,500 | £191,500 | +186.8% |
| 4 | South Yorkshire | £299,313 | £104,000 | £195,313 | +187.8% |
| 5 | Derbyshire | £327,500 | £125,000 | £202,500 | +162.0% |
| 6 | Nottinghamshire | £325,000 | £117,000 | £208,000 | +177.8% |
| 7 | Swansea | £340,000 | £124,000 | £216,000 | +174.2% |
| 8 | Norfolk | £347,500 | £130,000 | £217,500 | +167.3% |
| 9 | East Riding Of Yorkshire | £312,500 | £92,989 | £219,511 | +236.1% |
| 10 | Tyne And Wear | £312,375 | £88,625 | £223,750 | +252.5% |
Counties with narrow gaps typically have either high flat values (such as London) or low detached prices. In these markets, subdivision may not generate sufficient uplift to justify the conversion costs, and developers should consider alternative strategies such as new build or refurbishment.
04
The Conversion Opportunity
Where the detached-to-flat gap exceeds 200%, developers can potentially acquire a detached property, convert it into multiple flats, and generate a combined GDV that significantly exceeds the purchase price. This strategy works best when paired with development finance for the conversion works and bridging finance for the initial acquisition.
Planning consent for conversion and subdivision can be more straightforward than new build in many areas, as the external appearance of the building may be largely unchanged. Check local authority policies in your target area before committing.
05
Finance Your Conversion Scheme
Construction Capital can source development finance for conversion projects from £150,000 to £25m+. Whether you are converting a single house into flats or tackling a commercial-to-residential change of use, we will find the right lender. Mezzanine finance can top up your equity position where the gap between senior debt and total costs needs bridging.
Submit your scheme via our deal room for a no-obligation quote.
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Related
market reports.
Greater London Property Market: Prices, Trends & Development Finance (2026)
5 min readHertfordshire Property Market: Prices, Trends & Development Finance (2026)
5 min readSurrey Property Market: Prices, Trends & Development Finance (2026)
5 min readBuckinghamshire Property Market: Prices, Trends & Development Finance (2026)
5 min readBerkshire Property Market: Prices, Trends & Development Finance (2026)
5 min readCommon questions
Frequently asked
questions.
Where is the biggest price gap between detached houses and flats?
Greater London has the widest gap at £712,500, with detached houses at a median of £1,162,500 versus flats at £450,000.
Is converting a house into flats profitable?
It can be highly profitable in counties where the detached-to-flat price gap exceeds 200%. The key factors are purchase price, conversion costs, planning consent, and local flat demand. A development appraisal should always be run before committing.
What finance is available for conversion projects?
Development finance is the primary product for conversion projects, typically covering 65-75% of costs. Bridging loans can fund the initial acquisition, and mezzanine finance can top up the equity position for larger schemes.
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