Over the past 30 years, there have been 89 property sales recorded in the SG3 6NU postcode area. The highest sale price reached £760,000, while the most recent sale was for a semi-detached house sold in April 2025 for £660,000.

The estimated average property value in SG3 6NU currently stands at £629,816, which is approximately 21.1% higher than the city average, indicating a potentially more desirable or in-demand location.

In terms of size, the average price per square metre is approximately £5,677.

Property prices in SG3 6NU have risen by 6.1% over the past year , with a total increase of 16.6% over the past five years, and a long-term rise of 52% over the past decade.

The most common type of property sold in the area is semi-detached, making up around 92% of transactions , followed by detached and terraced.

Housing in SG3 6NU is predominantly owner-occupied, with an estimated 87% of homes being lived in by the owners.

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Property Sales

10 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 988 sq ft
Today
£618,829
streetscan.co.uk estimate
3 May 2012
£345,000
8 Mar 2002
£208,000
View +1 more
More details

12 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 7bed
📐 1185 sq ft
Today
£636,194
streetscan.co.uk estimate
18 Feb 2011
£346,000
16 Jun 2003
£245,000
More details

13 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 7bed
📐 1345 sq ft
Today
£663,582
streetscan.co.uk estimate
19 Aug 2024
£650,000
14 Sep 2009
£280,000
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More details

15 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£587,577
streetscan.co.uk estimate
19 Nov 1998
£130,000

16 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1755 sq ft
Today
£628,210
streetscan.co.uk estimate
31 Jan 2020
£548,000
10 Jul 2003
£230,000
More details

17 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 7bed
📐 1292 sq ft
Today
£570,000
streetscan.co.uk estimate
7 Jul 2005
£275,000
5 Feb 1999
£127,000
More details

18 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£614,052
streetscan.co.uk estimate
5 Feb 2003
£239,995
29 Jan 1997
£105,000

19 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£580,305
streetscan.co.uk estimate
30 Jan 2004
£249,995

2 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 753 sq ft
Today
£473,356
streetscan.co.uk estimate
29 May 2019
£400,000
3 Nov 2009
£282,500
More details

20 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 994 sq ft
Today
£563,294
streetscan.co.uk estimate
24 Sep 2010
£308,000
More details

21 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 1076 sq ft
Today
£522,500
streetscan.co.uk estimate
27 Mar 2024
£495,000
More details

22 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 1281 sq ft
Today
£567,541
streetscan.co.uk estimate
23 May 2014
£359,000
More details

23 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Detached
🛏️ 7bed
📐 1744 sq ft
Today
£823,948
streetscan.co.uk estimate
9 Oct 2018
£760,000
More details

26 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1378 sq ft
Today
£646,369
streetscan.co.uk estimate
8 Dec 2017
£565,100
8 Dec 2000
£155,000
More details

27 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1442 sq ft
Today
£626,015
streetscan.co.uk estimate
8 Jan 2021
£565,000
21 Feb 2005
£315,000
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More details

28 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 1385 sq ft
Today
£685,829
streetscan.co.uk estimate
15 Jun 2012
£375,000
5 Sep 2006
£280,000
More details

29 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 1238 sq ft
Today
£573,239
streetscan.co.uk estimate
19 Dec 2024
£590,000
23 Nov 1998
£149,000
View +1 more
More details

3 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 753 sq ft
Today
£477,738
streetscan.co.uk estimate
5 Jul 2018
£420,000
25 May 2005
£275,000
View +1 more
More details

30 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Terraced
🛏️ 5bed
📐 1313 sq ft
Today
£611,921
streetscan.co.uk estimate
30 Apr 2004
£275,000
More details

31 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1030 sq ft
Today
£589,511
streetscan.co.uk estimate
28 Mar 2003
£235,000
30 Oct 1998
£161,000
More details

32 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1216 sq ft
Today
£627,797
streetscan.co.uk estimate
1 Nov 2007
£350,000
21 Mar 1997
£105,000
More details

34 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£573,540
streetscan.co.uk estimate
6 Oct 1995
£90,000

35 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 936 sq ft
Today
£578,802
streetscan.co.uk estimate
28 Apr 2016
£453,000
More details

36 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 904 sq ft
Today
£491,107
streetscan.co.uk estimate
10 May 2019
£415,000
12 Jan 2007
£320,000
View +2 more
More details

37 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£598,095
streetscan.co.uk estimate
11 Feb 2003
£249,950
25 May 2000
£145,000

38 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£555,826
streetscan.co.uk estimate
20 Jun 2007
£305,000
12 Feb 2003
£217,950
20 May 1997
£105,000

39 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1259 sq ft
Today
£635,575
streetscan.co.uk estimate
4 Oct 2023
£630,000
13 Dec 2012
£382,000
View +3 more
More details

4 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£682,127
streetscan.co.uk estimate
11 Jun 1998
£150,000

40 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£736,615
streetscan.co.uk estimate
12 Mar 1996
£112,000

42 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1733 sq ft
Today
£796,711
streetscan.co.uk estimate
31 Jan 2013
£446,500
26 Mar 2007
£280,000
More details

43 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 1033 sq ft
Today
£442,434
streetscan.co.uk estimate
26 Mar 2021
£395,000
15 Dec 2009
£295,000
More details

44 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1206 sq ft
Today
£603,903
streetscan.co.uk estimate
12 May 2016
£475,000
10 Oct 2014
£372,500
More details

45 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£725,348
streetscan.co.uk estimate
25 Oct 2004
£345,000
6 Dec 1996
£135,000

48 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 1130 sq ft
Today
£551,433
streetscan.co.uk estimate
2 Jun 2021
£495,000
8 Jul 2016
£420,000
View +1 more
More details

49 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1206 sq ft
Today
£548,843
streetscan.co.uk estimate
26 Mar 2021
£490,000
7 Oct 2003
£250,000
View +1 more
More details

5 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£715,386
streetscan.co.uk estimate
27 Sep 1999
£165,250

50 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 6bed
📐 1378 sq ft
Today
£689,344
streetscan.co.uk estimate
18 Feb 2000
£172,000
12 Feb 1998
£120,000
More details

51 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 4bed
📐 732 sq ft
Today
£537,425
streetscan.co.uk estimate
5 Aug 2014
£339,950
7 Sep 2007
£280,000
View +2 more
More details

52 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Detached
🛏️ 6bed
📐 789 sq ft
Today
£606,369
streetscan.co.uk estimate
1 May 2002
£216,000
31 May 1995
£110,000
More details

6 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 7bed
📐 1668 sq ft
Today
£660,000
streetscan.co.uk estimate
25 Apr 2025
£660,000
2 Dec 2011
£385,000
View +1 more
More details

8 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

Today
£648,195
streetscan.co.uk estimate
19 Dec 2000
£175,000

9 New Close, Knebworth, North Hertfordshire, Hertfordshire, SG3 6NU

🏠 Semi-detached
🛏️ 5bed
📐 1636 sq ft
Today
£869,492
streetscan.co.uk estimate
29 May 2014
£550,000
2 Nov 2001
£250,000
View +1 more
More details

Area Insights

Data Sources

Properties at SG3 6NU appear eighty-nine times in the Land Registry records, with the latest transaction recorded on 25 Apr 2025. It also has thirty-one Energy Performance Certificates (EPC) entries, the earliest dating back to 6 Dec 2010. 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.