Town Profile 1 postcode area
Knebworth
Hertfordshire · 4,624 properties sold since 1995
Postcodes: SG3
Average Property Value
£488,240
↑ 3.6% YoY
£488,240
Average
£425,500
Median
£30k
Lowest
£7.0M
Highest
Price Trend
£437k £511k
Property Types
Terraced 28%
Semi-Detached 25%
Detached 25%
Flat 21%
Other 1%
4,624 total sales across 5 property types
Market Summary
£302k
Lower Quartile
£426k
Median
£585k
Upper Quartile
Price Distribution £30k – £7.0M
Yearly Price History
| Year | Average | Median | Sales | Change |
|---|---|---|---|---|
| 2026 (YTD) | £521,750 | £521,750 | 2 | ↑ 2.2% |
| 2025 | £510,729 | £465,000 | 120 | ↑ 3.6% |
| 2024 | £492,816 | £448,500 | 129 | ↓ 0.3% |
| 2023 | £494,308 | £415,000 | 83 | ↑ 8.9% |
| 2022 | £454,082 | £413,500 | 124 | ↓ 12.8% |
| 2021 | £520,951 | £465,000 | 193 | ↑ 14.6% |
| 2020 | £454,695 | £370,250 | 177 | ↓ 15.1% |
| 2019 | £535,271 | £410,500 | 128 | ↑ 14.9% |
| 2018 | £465,682 | £408,000 | 111 | ↓ 33.7% |
| 2017 | £702,744 | £387,450 | 129 | ↑ 60.8% |
| 2016 | £437,025 | £380,000 | 150 | ↑ 7.9% |
| 2015 | £405,183 | £325,000 | 127 | — |
Postcode Areas in Knebworth
Knebworth covers 1 postcode district. Click any area for detailed property data, schools, crime stats, and demographics.
Useful guides
Source: HM Land Registry Price Paid Data · Crown copyright 2026 · Open Government Licence v3.0