Market analysis
The average home in the SG3 postcode area, part of Knebworth, has sold for £495,087 — 82% above the UK average of £271,295. The median sold price, less skewed by the most expensive sales, is £410,000. In 2025, the most recent complete year, prices rose 11.1% year on year, from £492,177 to £546,722. Since 2015, average values here have grown by 35%.
Terraced houses are the most commonly sold property type in SG3, making up 28% of the 4,690 transactions on record. In all, 4,690 sales have been registered here since 1995, within North Hertfordshire, Hertfordshire. Buyers weighing up SG3 commonly compare it with neighbouring SG1, SG10, SG11.
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Property Value Trends
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Market Summary
Higher-value properties pull the average above median, indicating a mixed market.
Property Types
Recent Registered Sales
HM Land Registry| Property Type | Address | Sale Date | Price Paid |
|---|---|---|---|
| Terraced | 48, WOODSTOCK SG3 6EA | 05-06-2026 | £330,000 |
| Terraced | 61, CARVERS CROFT, WOOLMER GREEN SG3 6LX | 05-06-2026 | £400,000 |
| Flat | 43, LOWE HOUSE SG3 6EU | 02-06-2026 | £175,000 |
| Terraced | 21, PETERS WAY SG3 6HP | 29-05-2026 | £417,000 |
| Terraced | 36, BROOM GROVE SG3 6BQ | 28-05-2026 | £345,000 |
| Detached | 45, CARVERS CROFT, WOOLMER GREEN SG3 6LX | 22-05-2026 | £710,000 |
| Terraced | 57, TWIN FOXES, WOOLMER GREEN SG3 6QT | 22-05-2026 | £270,000 |
| Semi-Detached | 53, BROOKBRIDGE LANE, DATCHWORTH SG3 6SZ | 15-05-2026 | £575,000 |
| Flat | 4, HAYGARTH SG3 6HE | 14-05-2026 | £130,000 |
| Flat | 18, CONSTANCE PLACE SG3 6EE | 14-05-2026 | £280,000 |
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About this data
Averages and medians on this page cover the 1,539 sales registered in SG3 since 2015, so they reflect the current market rather than three decades of it. The 4,690 figure is every sale since records begin in 1995, and the yearly chart uses each year's own sales. Prices are what buyers actually paid, as registered with HM Land Registry — not asking prices or estimates. Scotland and Northern Ireland are not in this dataset; see Scotland and Northern Ireland.