Over the past 28 years, there have been 46 property sales recorded in the SG3 6BJ postcode area. The highest sale price reached £565,000, while the most recent sale was for a detached house sold in August 2025 for £565,000.

The estimated average property value in SG3 6BJ currently stands at £571,123, which is roughly in line with the city average (within ±8%), suggesting property prices reflect broader market trends.

In terms of size, the average price per square metre is approximately £5,484.

Property prices in SG3 6BJ have risen by 5.8% over the past year , with a total increase of 16.2% over the past five years, and a long-term rise of 51.7% over the past decade.

The most common type of property sold in the area is semi-detached, making up around 67% of transactions , followed by detached and terraced.

Housing in SG3 6BJ is predominantly owner-occupied, with an estimated 66% of homes being lived in by the owners.

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Property Sales

17A Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Terraced
🛏️ bed
📐 1141 sq ft
Today
£528,893
streetscan.co.uk estimate
3 Oct 2022
£500,000
10 Mar 2020
£420,000
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17B Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Terraced
🛏️ bed
📐 1249 sq ft
Today
£529,520
streetscan.co.uk estimate
16 May 2022
£480,000
More details

17C Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Terraced
🛏️ bed
📐 1141 sq ft
Today
£551,583
streetscan.co.uk estimate
30 May 2022
£500,000
More details

21 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 3bed
📐 829 sq ft
Today
£527,839
streetscan.co.uk estimate
31 Mar 2017
£396,000
30 Aug 2006
£223,000
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21A Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Detached
🛏️ 5bed
📐 1130 sq ft
Today
£575,243
streetscan.co.uk estimate
26 Aug 2025
£565,000
8 Nov 2019
£415,000
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21B Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Detached
🛏️ 4bed
📐 893 sq ft
Today
£555,117
streetscan.co.uk estimate
24 Jan 2014
£321,000
More details

23 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 5bed
📐 1206 sq ft
Today
£481,628
streetscan.co.uk estimate
27 Jul 2007
£245,000
More details

25 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 6bed
📐 1378 sq ft
Today
£572,584
streetscan.co.uk estimate
28 Mar 2019
£450,000
24 Mar 2015
£325,000
More details

27 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

Today
£529,939
streetscan.co.uk estimate
19 Sep 2003
£208,000
25 Oct 1999
£114,250
22 Apr 1997
£75,000

29 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 3bed
📐 764 sq ft
Today
£521,632
streetscan.co.uk estimate
14 Aug 2020
£430,000
11 Oct 2013
£277,500
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31 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 5bed
📐 893 sq ft
Today
£499,462
streetscan.co.uk estimate
14 Nov 2018
£419,950
25 Jul 2014
£292,000
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33 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 5bed
📐 947 sq ft
Today
£513,216
streetscan.co.uk estimate
31 Oct 2022
£478,000
7 May 2009
£245,000
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41 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 4bed
📐 1055 sq ft
Today
£573,086
streetscan.co.uk estimate
12 Oct 2020
£485,000
28 May 2015
£353,000
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More details

43 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Semi-detached
🛏️ 3bed
📐 721 sq ft
Today
£464,237
streetscan.co.uk estimate
22 May 2025
£443,000
22 Dec 2020
£425,000
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More details

50 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Detached
🛏️ 7bed
📐 1432 sq ft
Today
£805,763
streetscan.co.uk estimate
26 Mar 2014
£475,000
17 Jun 2005
£378,000
More details

62 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

🏠 Detached
🛏️ 5bed
📐 1345 sq ft
Today
£656,899
streetscan.co.uk estimate
24 Apr 2019
£535,000
More details

64 Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

Today
£815,039
streetscan.co.uk estimate
2 Dec 2005
£372,000
15 Aug 2002
£355,000

Deepings Gun Lane, Knebworth, North Hertfordshire, Hertfordshire, SG3 6BJ

Today
£1,019,980
streetscan.co.uk estimate
25 Jul 2000
£282,000

Area Insights

Data Sources

Properties at SG3 6BJ appear fourty-six times in the Land Registry records, with the latest transaction recorded on 26 Aug 2025. It also has fifteen Energy Performance Certificates (EPC) entries, the earliest dating back to 12 Aug 2013. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.

Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.