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Start with the current market in Greenhill, Harrow on the Hill, its direction of travel and the mix of homes being sold. Use Compare, Save and Watch to narrow a shortlist.
The data, disclosure rules and publication thresholds stay the same; this changes how the evidence is organised.
Median price
£437,000
Eligible sales · trailing 24 months
Per square metre
£5,816/m²
Matched sales · trailing 24 months
5-year change
-6.7%
Rolling 12-month medians, five years apart
From rolling peak
-11.6%
Against the highest rolling 12-month median
Market read
Greenhill, Harrow on the Hill (HA1) has a median sale price of £437,000 — around £5,816 for each square metre of floor area. The district is trading 25.1% below the high set in 2025. Floor area varies far more than room counts suggest: properties recorded with 9 habitable rooms — bedrooms and receptions together — range from 158 to 332 m² here. Transaction volumes are down 36% on the preceding period. At 9.7 times median local earnings, that is a demanding ratio by any measure.
Floor-area evidence
Repeat EPC records in this area show some variation in recorded floor area.
Among 4,921 dwellings with repeat EPCs in Greenhill, Harrow on the Hill, the typical recorded floor-area range was 5%. This describes the consistency of repeated records, not the condition or value of an individual home.
Market signal
Each point is the median of sales in the three months ending that month.
Market shape
Lower-quarter price
£337,000
25% of recent eligible sales were below this
Median price
See headline
Same 24-month sale population
Upper-quarter price
£577,750
25% of recent eligible sales were above this
Property types
£1.10m
£6,621/m²
£363,000
£/m² withheld for evidence
£627,500
£6,063/m²
£575,500
£5,851/m²
Energy-rating evidence
These are matched-sale associations, not a valuation of energy efficiency. Each rating cell contains at least five sales.
£279,000
£5,376/m²
£388,000
£5,490/m²
£574,000
£5,892/m²
£635,000
£6,176/m²
Energy-transition evidence
This is the latest available EPC record for each identifiable certified dwelling, not a census of every home or an assessment of an individual property.
EPC sample
15,647
Latest certificate to 2 August 2026
Rated D–G
40%
Current EPC rating in the certificate sample
Potentially higher rating
44%
Potential EPC rating exceeds current rating
EPC potential values are modelled certificate outputs, not quotes for retrofit work, future bills, a value uplift or a letting/compliance conclusion. Source: Energy Performance of Buildings Register domestic certificates.
The space signal
Property listings describe homes by bedroom count, but that is not recorded in any public dataset. What is recorded is the number of habitable rooms — bedrooms and reception rooms together — and the total floor area. In Greenhill, Harrow on the Hill, homes with the same number of habitable rooms vary enormously in size.
| Habitable rooms | Smaller (10th) | Typical | Larger (90th) | Sales |
|---|---|---|---|---|
| 1 | 22 m² | 26 m² | 38 m² | 114 |
| 2 | 37 m² | 46 m² | 57 m² | 802 |
| 3 | 49 m² | 61 m² | 80 m² | 1,773 |
| 4 | 59 m² | 73 m² | 100 m² | 385 |
| 5 | 79 m² | 93 m² | 118 m² | 564 |
| 6 | 99 m² | 122 m² | 158 m² | 371 |
| 7 | 119 m² | 143 m² | 177 m² | 191 |
| 8 | 138 m² | 178 m² | 221 m² | 106 |
| 9 | 158 m² | 220 m² | 332 m² | 52 |
| 10 | 206 m² | 262 m² | 388 m² | 25 |
| 11 | 196 m² | 243 m² | 286 m² | 5 |
| 12 | 249 m² | 301 m² | 364 m² | 10 |
The widest spread here is among homes with 9 habitable rooms, ranging from 158 to 332 m². Two properties advertised the same way can differ by more than half their floor area, which is why price per square metre is a more useful comparison than price alone.
Data current to 19 June 2026.