Colnbrook - SL3
The average house price in Colnbrook (SL3) was £487,822 in 2025, up 475% from £84,836 in 1995. Prices peaked at £494,207 in 2023.
Over the last ten years, average prices have risen 36% (from £359,718 in 2015). The median sale price in 2025 was £450,000 across 390 sales. 20,732 transactions have been recorded in SL3 since 1995.
So far in 2026, 70 sales have been recorded at an average price of £511,893 (year to date).
2025 prices at a glance
| Property type | Average price | Median price | Sales |
|---|---|---|---|
| All types | £487,822 | £450,000 | 390 |
| Detached | £864,032 | £740,000 | 58 |
| Semi-detached | £559,277 | £555,000 | 123 |
| Terraced | £423,327 | £415,000 | 107 |
| Flats/maisonettes | £255,390 | £261,500 | 102 |
Price
Type
Average Price by Year
Median Price by Year
Transaction Volume by Year
Data source: UK Land Registry Price Paid Data. Inflation data: ONS CPI series D7BT. Real prices expressed in 2026 pounds.