Over the past 30 years, there have been 115 property sales recorded in the AL7 3XP postcode area. The highest sale price reached £420,000, while the most recent sale was for a detached flat sold in February 2026 for £250,000.

The estimated average property value in AL7 3XP currently stands at £328,970, which is approximately 28.9% 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 £5,743.

Property prices in AL7 3XP have risen by 4% over the past year , with a total increase of 12.6% over the past five years , and a long-term rise of 43% over the past decade .

The most common type of property sold in the area is terraced, making up around 68% of transactions , followed by flat and semi-detached.

Housing in AL7 3XP is mixed, with 50% of homes being owner-occupied, indicating a diverse residential makeup.

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Property Sales

1 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

Today
£478,873
streetscan.co.uk estimate
14 Jul 2006
£232,500
16 Dec 2005
£192,000
2 Nov 2005
£147,500
26 Feb 2004
£220,000
27 Oct 2000
£140,000

10 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 4bed
📐 710 sq ft
Today
£438,780
streetscan.co.uk estimate
17 Jul 2024
£420,000
21 Feb 2020
£385,000
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11 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

Today
£408,723
streetscan.co.uk estimate
17 Sep 2003
£165,000

12 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

Today
£459,558
streetscan.co.uk estimate
15 Mar 2002
£143,500

14 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 4bed
📐 721 sq ft
Today
£370,382
streetscan.co.uk estimate
28 Oct 2011
£196,000
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16 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

Today
£279,854
streetscan.co.uk estimate
3 Mar 2006
£130,000
8 Nov 2002
£115,000

17 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 2bed
📐 538 sq ft
Today
£302,228
streetscan.co.uk estimate
17 Feb 2022
£282,236
30 Aug 2019
£270,000
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18 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 2bed
📐 420 sq ft
Today
£278,702
streetscan.co.uk estimate
5 Mar 2021
£244,000
9 Nov 2015
£196,000
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19 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 2bed
📐 441 sq ft
Today
£281,148
streetscan.co.uk estimate
29 May 2015
£185,700
15 May 2007
£133,000
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2 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

Today
£398,198
streetscan.co.uk estimate
21 Dec 2006
£196,000

20 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 603 sq ft
Today
£380,866
streetscan.co.uk estimate
29 Jun 2001
£113,000
17 Apr 1998
£81,250
More details

21 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 592 sq ft
Today
£385,236
streetscan.co.uk estimate
9 Sep 2024
£365,000
26 Jan 2018
£315,000
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22 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 4bed
📐 603 sq ft
Today
£383,142
streetscan.co.uk estimate
22 Nov 2019
£325,000
25 Oct 2012
£179,000
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23 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 570 sq ft
Today
£226,567
streetscan.co.uk estimate
17 Feb 2020
£220,000
25 Aug 2000
£80,000
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24 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 2bed
📐 484 sq ft
Today
£201,450
streetscan.co.uk estimate
26 Dec 2022
£210,000
9 Nov 2006
£136,000
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25 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 578 sq ft
Today
£230,823
streetscan.co.uk estimate
1 Sep 2017
£227,000
20 Apr 2000
£84,950
More details

26 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 581 sq ft
Today
£245,228
streetscan.co.uk estimate
14 Jun 2004
£148,000
5 Jan 2000
£74,000
More details

27 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 527 sq ft
Today
£210,971
streetscan.co.uk estimate
4 Apr 2023
£212,500
More details

28 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 604 sq ft
Today
£247,692
streetscan.co.uk estimate
25 Sep 2020
£240,000
1 Nov 2017
£245,000
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29 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 560 sq ft
Today
£251,934
streetscan.co.uk estimate
31 Jan 2024
£247,500
4 Aug 2000
£81,000
More details

3 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Semi-detached
🛏️ 4bed
📐 721 sq ft
Today
£423,159
streetscan.co.uk estimate
30 Sep 2025
£410,000
3 Jun 1996
£73,000
More details

30 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 2bed
📐 495 sq ft
Today
£191,124
streetscan.co.uk estimate
31 Mar 2017
£188,750
30 Apr 2013
£125,000
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31 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

Today
£236,454
streetscan.co.uk estimate
25 Aug 1995
£49,200

32 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 3bed
📐 581 sq ft
Today
£252,880
streetscan.co.uk estimate
20 Feb 2026
£250,000
26 Nov 2020
£223,000
More details

33 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Flat
🛏️ 2bed
📐 538 sq ft
Today
£199,099
streetscan.co.uk estimate
24 May 2007
£135,000
21 Aug 2003
£113,500
More details

35 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 614 sq ft
Today
£405,228
streetscan.co.uk estimate
3 Apr 2023
£380,000
More details

37 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 624 sq ft
Today
£377,941
streetscan.co.uk estimate
18 Aug 2022
£375,000
17 Jul 2020
£310,000
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38 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 603 sq ft
Today
£387,925
streetscan.co.uk estimate
31 Mar 1999
£80,000
More details

39 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 4bed
📐 667 sq ft
Today
£359,800
streetscan.co.uk estimate
25 Mar 2021
£315,000
21 Aug 2014
£246,550
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4 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Semi-detached
🛏️ 5bed
📐 721 sq ft
Today
£443,728
streetscan.co.uk estimate
10 Dec 2020
£395,000
23 Jul 2002
£170,000
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40 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 603 sq ft
Today
£386,882
streetscan.co.uk estimate
28 Oct 2016
£315,000
17 Jul 1998
£79,950
More details

41 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 5bed
📐 678 sq ft
Today
£376,754
streetscan.co.uk estimate
23 Oct 2012
£210,000
13 Feb 2004
£165,000
More details

42 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 4bed
📐 732 sq ft
Today
£401,855
streetscan.co.uk estimate
7 Dec 2007
£215,000
More details

43 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Semi-detached
🛏️ 4bed
📐 732 sq ft
Today
£401,733
streetscan.co.uk estimate
20 Jul 2000
£114,000
More details

44 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 624 sq ft
Today
£365,650
streetscan.co.uk estimate
9 Jul 2024
£350,000
8 Apr 2015
£239,000
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45 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 495 sq ft
Today
£333,355
streetscan.co.uk estimate
3 Apr 2012
£179,000
20 Sep 2007
£185,000
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5 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 5bed
📐 721 sq ft
Today
£416,911
streetscan.co.uk estimate
4 Mar 2021
£365,000
9 Dec 2016
£353,500
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7 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 495 sq ft
Today
£338,078
streetscan.co.uk estimate
29 Sep 2021
£299,600
19 Nov 2004
£157,000
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8 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 3bed
📐 538 sq ft
Today
£365,711
streetscan.co.uk estimate
23 May 2022
£355,750
7 Oct 2019
£315,000
View +7 more
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9 Duncan Close, Welwyn Garden City, Welwyn Hatfield, Hertfordshire, AL7 3XP

🏠 Terraced
🛏️ 4bed
📐 915 sq ft
Today
£432,842
streetscan.co.uk estimate
2 May 2018
£360,000
2 Feb 2010
£205,000
More details

Area Insights

Data Sources

Properties at AL7 3XP appear one hundred and fifteen times in the Land Registry records, with the latest transaction recorded on 20 Feb 2026. It also has thirty-four Energy Performance Certificates (EPC) entries, the earliest dating back to 13 Feb 2018. 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.