Colnbrook - SL3
The average house price in Colnbrook (SL3) was £493,773 in 2025, up 482% from £84,836 in 1995. Prices peaked at £494,207 in 2023.
Over the last ten years, average prices have risen 37% (from £359,718 in 2015). The median sale price in 2025 was £455,000 across 400 sales. 20,797 transactions have been recorded in SL3 since 1995.
So far in 2026, 124 sales have been recorded at an average price of £513,343 (year to date).
2025 prices at a glance
| Property type | Average price | Median price | Sales |
|---|---|---|---|
| All types | £493,773 | £455,000 | 400 |
| Detached | £860,394 | £740,000 | 63 |
| Semi-detached | £562,933 | £560,000 | 126 |
| Terraced | £423,164 | £413,500 | 110 |
| Flats/maisonettes | £255,710 | £263,000 | 101 |
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.