Over the past 31 years, there have been 81 property sales recorded in the AL6 9AU postcode area. The highest sale price reached £413,000, while the most recent sale was a property sold in October 2025 for £310,000.

The estimated average property value in AL6 9AU currently stands at £353,720, which is approximately 57.7% lower than the city average - making it a relatively affordable option for buyers.

In terms of size, the average price per square metre is approximately £4,935.

Property prices in AL6 9AU have risen by 5% over the past year , with a total increase of 13.5% over the past five years , and a long-term rise of 38.9% over the past decade .

The most common type of property sold in the area is terraced, making up around 58% of transactions , followed by flat and semi-detached.

Housing in AL6 9AU is predominantly owner-occupied, with an estimated 100% of homes being lived in by the owners.

Click on the map to change the analyzed area

Property Sales

1 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£316,554
streetscan.co.uk estimate
29 Oct 2025
£310,000
25 Jan 2023
£235,000
7 Apr 2004
£124,500
24 May 2000
£150,000

10 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£533,209
streetscan.co.uk estimate
27 Jul 2012
£285,000

11 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£312,639
streetscan.co.uk estimate
15 Nov 2024
£295,000
19 Jul 2004
£215,000
11 Apr 2002
£160,000
28 Aug 1997
£82,000

12 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£247,459
streetscan.co.uk estimate
2 Aug 2019
£207,500
4 Sep 2014
£160,000
15 Dec 2005
£139,950
15 Feb 2002
£110,000

13 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£237,891
streetscan.co.uk estimate
1 Oct 2014
£152,500
13 Apr 2009
£117,500

14 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

🏠 Terraced
🛏️ 3bed
📐 797 sq ft
Today
£378,024
streetscan.co.uk estimate
17 Sep 2021
£335,000
18 Aug 2009
£217,500
View +2 more
More details

15 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£295,458
streetscan.co.uk estimate
21 Aug 2020
£282,000
19 Nov 1999
£89,000

16 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£444,556
streetscan.co.uk estimate
19 Dec 2019
£375,000
14 Dec 2000
£170,000

17 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£207,439
streetscan.co.uk estimate
20 Jul 2021
£202,500

18 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£551,725
streetscan.co.uk estimate
29 Nov 2011
£292,500
15 Nov 2007
£265,000
11 Sep 2002
£205,000

19 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£501,951
streetscan.co.uk estimate
20 Jul 2006
£240,000

2 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£203,368
streetscan.co.uk estimate
1 Sep 2017
£200,000
8 Jun 2001
£98,000

20 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£437,674
streetscan.co.uk estimate
28 Jan 2022
£410,000
28 Apr 2017
£330,000
19 Apr 2013
£285,000

21 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£388,829
streetscan.co.uk estimate
24 Mar 2024
£365,000
2 Jul 2009
£225,000

22 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£408,795
streetscan.co.uk estimate
16 Apr 2018
£340,000
2 May 2014
£250,000

23 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£389,602
streetscan.co.uk estimate
27 Feb 2024
£368,000
10 May 2013
£285,000
16 Jul 1998
£130,000

24 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£548,015
streetscan.co.uk estimate
31 Oct 2011
£290,000
25 Feb 2008
£275,000
12 Jan 2000
£153,000
29 Oct 1999
£137,500

25 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£466,554
streetscan.co.uk estimate
20 Aug 2021
£413,000
22 May 2013
£287,500

26 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£388,249
streetscan.co.uk estimate
26 Jul 1996
£84,000

27 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£415,954
streetscan.co.uk estimate
9 Oct 2018
£350,000
10 Jan 2008
£245,000

28 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£441,253
streetscan.co.uk estimate
23 Aug 2018
£370,000
16 Sep 2011
£220,000

3 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£178,323
streetscan.co.uk estimate
26 Aug 2016
£175,000
10 Aug 2001
£81,995

30 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£534,405
streetscan.co.uk estimate
10 Dec 2009
£275,000
20 Dec 2006
£237,500

31 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£463,063
streetscan.co.uk estimate
11 May 2012
£250,000

32 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£518,631
streetscan.co.uk estimate
31 May 2012
£280,000
12 Nov 1998
£130,000
28 Nov 1996
£108,000

33 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£498,026
streetscan.co.uk estimate
4 Feb 2011
£265,000

34 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£254,897
streetscan.co.uk estimate
25 Jun 2007
£176,000
9 May 1997
£78,000

35 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£196,834
streetscan.co.uk estimate
18 Jan 2017
£195,000

36 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£178,700
streetscan.co.uk estimate
11 May 2018
£175,000
5 Jan 2007
£135,000
7 Aug 1998
£64,000

37 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£257,188
streetscan.co.uk estimate
1 Feb 2019
£250,000
23 Jun 2011
£159,950

38 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£225,127
streetscan.co.uk estimate
4 Jul 2018
£220,000
4 Apr 2012
£150,000

4 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£204,878
streetscan.co.uk estimate
30 Aug 2019
£200,000
4 Dec 2006
£135,000

6 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£200,460
streetscan.co.uk estimate
19 May 2022
£195,000

7 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£246,228
streetscan.co.uk estimate
14 Jul 2017
£200,000
26 Jun 2009
£159,000
20 Sep 1996
£67,000
13 Sep 1995
£56,000

8 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£350,248
streetscan.co.uk estimate
26 Aug 2010
£192,500
7 Nov 2000
£120,000
19 Feb 1997
£79,950

9 St Marys Court, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 9AU

Today
£639,130
streetscan.co.uk estimate
22 May 1995
£100,000

Area Insights

Data Sources

Properties at AL6 9AU appear eighty-one times in the Land Registry records, with the latest transaction recorded on 29 Oct 2025. It also has a single Energy Performance Certificate (EPC) from 26 Nov 2020. 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.