Isleworth has an average sold price of £319,545 across 18,156 HM Land Registry transactions, with data from 1995-01-03 to 2026-07-23.
Isleworth averages £319,545 across 18,156 completed sales. Check the median, sample depth and nearby alternatives before using the average as a market signal.
Average £319,545 · Median £250,000 · 18,156 transactions · +3.2% growth · 271 streets
Isleworth has an average sale price of £319,545 and a median sale price of £250,000, based on 18,156 registered transactions across 32 active years. The average is 19.9% below the national average of £398,894, the median is 36.4% above the national median of £183,250.
The median sold price of £250,000 is 21.8% lower than the average of £319,545. This can happen when a smaller number of higher-value transactions pull the average upward.
Among the most active listed streets by transaction count, LONDON ROAD has 908 recorded sales at an average of £292,510; TWICKENHAM ROAD has 540 recorded sales at an average of £359,549; LINKFIELD ROAD has 403 recorded sales at an average of £299,588.
By transaction count, flats represent 42.5% of recorded sales (7,713 transactions) with an average sold price of £238,337; terraced homes represent 29.7% of recorded sales (5,386 transactions) with an average sold price of £344,248; semi-detached homes represent 23.4% of recorded sales (4,242 transactions) with an average sold price of £351,498.
Property valuation guide
Professional valuers use recent sold prices as comparable evidence. In Isleworth, the median sold price is £250,000 and the average is £319,545, based on 18,156 HM Land Registry transactions. Over five years, prices have moved +3.2%, which affects how comparables from earlier years should be weighted.
These are historical completed-sale prices — not a formal valuation, asking price or investment advice. Use them to sense-check an asking price or set expectations before instructing a surveyor.
| Year | Median price | Average price | Sales |
|---|---|---|---|
| 2026 | £480,000 | £505,022 | 151 |
| 2025 | £487,000 | £528,294 | 436 |
| 2024 | £490,000 | £635,035 | 430 |
| 2023 | £490,000 | £540,188 | 373 |
| 2022 | £472,000 | £554,059 | 485 |
| 2021 | £465,000 | £505,513 | 615 |
| 2020 | £462,500 | £506,585 | 427 |
| 2019 | £423,000 | £477,212 | 537 |
| 2018 | £467,500 | £526,459 | 573 |
| 2017 | £425,000 | £509,448 | 618 |
Source: HM Land Registry Price Paid Data. Most recent 10 years shown.