Knebworth - SG3
The average house price in Knebworth (SG3) was £510,101 in 2025, up 433% from £95,641 in 1995. Prices peaked at £514,392 in 2023.
Over the last ten years, average prices have risen 26% (from £405,051 in 2015). The median sale price in 2025 was £470,000 across 142 sales. 4,521 transactions have been recorded in SG3 since 1995.
So far in 2026, 44 sales have been recorded at an average price of £471,545 (year to date).
2025 prices at a glance
| Property type | Average price | Median price | Sales |
|---|---|---|---|
| All types | £510,101 | £470,000 | 142 |
| Detached | £803,450 | £725,000 | 30 |
| Semi-detached | £519,847 | £502,000 | 53 |
| Terraced | £411,299 | £397,500 | 36 |
| Flats/maisonettes | £259,663 | £245,000 | 23 |
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.