UK Property Check · Printed on 8 November 2026ukpropertycheck.co.uk/postcode/sg3
SG3Knebworth, North Hertfordshire, England
House prices in SG3, Knebworth
Homes in SG3 sold for a median of £470,000 between September 2024 and August 2026, from 258 standard sales.
That is 11% above the £425,000 median for the North Hertfordshire council area, which holds 58% of SG3's postcodes.
Prices by property type
| Type | Sales | Median price | Middle half |
|---|---|---|---|
| Detached | 57 | £710,000 | £603,000 to £880,000 |
| Semi-detached | 87 | £515,000 | £461,000 to £578,000 |
| Terraced | 65 | £383,000 | £345,000 to £450,000 |
| Flats and maisonettes | 49 | £245,000 | £215,000 to £290,000 |
SG3 has too few sales linked to an energy certificate for its own price per m². Across the SG postcode area, whose median sale price is within 20% of SG3's, it was £4,676 per m² from 393 linked sales.
Semi-detached houses were the most common type sold here, at 34% of sales, ahead of terraced houses at 25%.
Compare an asking price
- Check a home for its floor area
- How much to offer, then how to put the offer in writing
- Work out stamp duty
Where prices are higher in SG3
Each dot is a postcode in SG3 with at least 3 standard sales from September 2024 to August 2026, shaded by the median price of those sales. Select a dot for its median and a link to its sales, or use the list below the map.
Map loading
List the 32 postcodes on the map, dearest first
| Postcode | Median price | Standard sales |
|---|---|---|
| SG3 6AA | £1,265,000 | 3 |
| SG3 6PR | £870,000 | 3 |
| SG3 6NN | £835,000 | 3 |
| SG3 6RR | £667,500 | 4 |
| SG3 6NU | £625,000 | 4 |
| SG3 6FB | £585,000 | 4 |
| SG3 6SZ | £582,500 | 4 |
| SG3 6HB | £580,000 | 3 |
| SG3 6RP | £575,000 | 3 |
| SG3 6DB | £547,500 | 4 |
| SG3 6ED | £525,000 | 3 |
| SG3 6SX | £520,000 | 3 |
| SG3 6DE | £515,000 | 7 |
| SG3 6JW | £515,000 | 4 |
| SG3 6FF | £500,000 | 3 |
| SG3 6FR | £455,000 | 43 |
| SG3 6BU | £446,500 | 6 |
| SG3 6DU | £427,000 | 4 |
| SG3 6EL | £395,000 | 3 |
| SG3 6JH | £387,500 | 4 |
| SG3 6DX | £385,000 | 7 |
| SG3 6LX | £380,500 | 8 |
| SG3 6QT | £370,000 | 5 |
| SG3 6HP | £345,000 | 3 |
| SG3 6EA | £343,500 | 3 |
| SG3 6EU | £331,500 | 6 |
| SG3 6DT | £315,000 | 5 |
| SG3 6LP | £286,000 | 4 |
| SG3 6EE | £280,000 | 5 |
| SG3 6JZ | £225,000 | 3 |
| SG3 6AL | £220,500 | 5 |
| SG3 6HE | £217,500 | 4 |
Prices over time
The median rose 18%, from £397,500 in 2016 to £470,000 in 2025, among the smallest tenth of rises across the 233 districts in the East of England.
Sales picked up in 2025: 145 standard sales in SG3, 16% more than the 125 in 2024.
Postcode districts in the North Hertfordshire council area
Median sale price of the 5 districts with at least 100 standard sales, September 2024 to August 2026, dearest first, each named by its post town. SG3 is the second most expensive.
- SG4 Hitchin£490,000
- SG3 Knebworth, this district£470,000
- SG5 Hitchin£447,000
- SG6 Letchworth Garden City£390,000
- SG7 Baldock£374,000
Prices by council ward
Median price in the council wards that cover most of SG3, from the sales in SG3, September 2024 to August 2026, dearest first:
- Aston, Datchworth & Walkern 32 sales£607,500
- Knebworth 181 sales£457,500
- Welwyn East 51 sales£400,000
Recent sales
The 10 latest sales ran from £292,000 for a flat on London Road to £875,000 for a detached house on Old Lane.
The latest standard sales recorded in SG3. Sales take 2 weeks to 2 months to appear (how to find out what a house sold for). Select an address to check that home, or a postcode for every sale there.
- The Conifers Gipsy LaneSold for £650,000
- 22 Stockens DellSold for £510,000
- 19 LongmeadSold for £394,000
- 14 Abbots CloseSold for £650,000
- 87 Brookbridge LaneSold for £590,000
- 111 Wadnall WaySold for £315,000
- 1 Harold Villas, 8 Gun LaneSold for £808,000
- 19 Hay WainsSold for £590,000
- Old Lane House Old LaneSold for £875,000
- 84 London RoadSold for £292,000
Streets with the most standard sales, with their median price, September 2024 to August 2026:
- Dunnock Close, Knebworth£455,00043 sales
- Wadnall Way, Knebworth£382,50016 sales
- Pondcroft Road, Knebworth£485,00013 sales
Living in SG3
Crime
46 crimes per 1,000 residents in the year to August 2026
Lower than 77 in 100 postcode districts. England and Wales: 84. The middle half of postcode districts are between 47 and 93.
The rate counts every crime recorded in an area against the people who live there, so shops, stations and nightlife push it up.
Gigabit broadband
Across its postcodes, an average of 78% of homes can get it
Lower than 68 in 100 postcode districts. England and Wales: 89%. The middle half of postcode districts are between 73% and 94%.
Radon
Every postcode is in a 1 km square that includes a radon Affected Area
Higher than 83 in 100 postcode districts.
In a radon Affected Area, UKHSA recommends a radon test. A UKradon report gives the result for an exact address.
Council tax
Band D is £2,449 a year in North Hertfordshire for 2026 to 2027
Near the middle of all council areas. England: £2,392. The middle half of council areas are between £2,323 and £2,526.
Band D includes every charge on the bill, such as police, fire and any county, parish or town council.
The free check gives these for a single home, with the nearest schools and road and rail noise (how we work them out).
Crime: data.police.uk, with Census 2021 population from the Office for National Statistics. Broadband: Ofcom Connected Nations, January 2026. Radon: the British Geological Survey and UKHSA. Council tax: the Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0.
Energy ratings of homes for sale
| Rating | Homes | Share |
|---|---|---|
| B | 6 | |
| C | 92 | |
| D | 68 | |
| E | 8 | |
| F | 2 |
When the homes were built
| Built | Homes | Share |
|---|---|---|
| 5 | ||
| 28 | ||
| 8 | ||
| 31 | ||
| 50 | ||
| 34 | ||
| 16 | ||
| 4 |
About these figures
The figures come from 258 standard sales in SG3, the latest on 27 August 2026 (what counts as a standard sale). Of these, 16% were new builds and 19% were flats.
Updated 15 October 2026 with sales recorded to August 2026. Next update due in late November 2026.
Contains HM Land Registry data © Crown copyright and database right 2026. Energy certificate data from the Ministry of Housing, Communities and Local Government. Both are licensed under the Open Government Licence v3.0.