Knebworth - SG3
The average house price in Knebworth (SG3) was £512,515 in 2025, up 436% from £95,641 in 1995. Prices peaked at £514,392 in 2023.
Over the last ten years, average prices have risen 27% (from £405,051 in 2015). The median sale price in 2025 was £467,500 across 133 sales. 4,490 transactions have been recorded in SG3 since 1995.
So far in 2026, 22 sales have been recorded at an average price of £498,727 (year to date).
2025 prices at a glance
| Property type | Average price | Median price | Sales |
|---|---|---|---|
| All types | £512,515 | £467,500 | 133 |
| Detached | £812,190 | £750,000 | 29 |
| Semi-detached | £521,603 | £506,000 | 48 |
| Terraced | £409,757 | £390,000 | 34 |
| Flats/maisonettes | £256,466 | £245,000 | 22 |
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.