Over the past 29 years, there have been 28 property sales recorded in the AL6 0TT postcode area. The highest sale price reached £1,350,000, while the most recent sale was for a detached house sold in September 2025 for £950,000.

The estimated average property value in AL6 0TT currently stands at £852,894, 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 £5,968.

Property prices in AL6 0TT have risen by 2.7% over the past year , with a total increase of 12.7% over the past five years, and a long-term rise of 40.3% over the past decade.

The most common type of property sold in the area is detached, making up around 75% of transactions , followed by terraced and semi-detached.

Housing in AL6 0TT is predominantly owner-occupied, with an estimated 100% of homes being lived in by the owners.

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Property Sales

23 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

Today
£1,013,158
streetscan.co.uk estimate
5 Nov 1999
£250,000

29 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Detached
🛏️ 6bed
📐 2347 sq ft
Today
£956,605
streetscan.co.uk estimate
20 Feb 2018
£857,000
7 Nov 2013
£695,000
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More details

31 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Terraced
🛏️ 6bed
📐 964 sq ft
Today
£936,864
streetscan.co.uk estimate
6 Jul 2017
£781,500
15 May 2009
£430,000
More details

33 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Detached
🛏️ 9bed
📐 2301 sq ft
Today
£1,070,569
streetscan.co.uk estimate
21 Nov 2013
£660,000
More details

35 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Detached
🛏️ 6bed
📐 764 sq ft
Today
£679,338
streetscan.co.uk estimate
10 Jun 2011
£402,000
More details

39 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Detached
🛏️ 11bed
📐 4069 sq ft
Today
£1,313,440
streetscan.co.uk estimate
24 Nov 2022
£1,350,000
16 Oct 2012
£815,000
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More details

41 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

Today
£163,136
streetscan.co.uk estimate
20 Jan 1998
£37,000

43 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

Today
£799,960
streetscan.co.uk estimate
22 Dec 2008
£414,000
30 Nov 2001
£330,000
31 Jul 1996
£142,000

45 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Detached
🛏️ 6bed
📐 1152 sq ft
Today
£572,639
streetscan.co.uk estimate
7 Feb 2025
£575,000
More details

47 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Terraced
🛏️ 10bed
📐 3143 sq ft
Today
£1,020,833
streetscan.co.uk estimate
4 Jun 2020
£875,000
12 May 2006
£555,000
More details

49 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

🏠 Detached
🛏️ 6bed
📐 1539 sq ft
Today
£950,000
streetscan.co.uk estimate
2 Sep 2025
£950,000
4 Sep 2009
£455,000
View +1 more
More details

53 Mardley Hill, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TT

Today
£861,714
streetscan.co.uk estimate
12 Jun 2014
£565,000
30 Jan 2004
£340,000
21 May 1999
£195,000

Area Insights

Data Sources

Properties at AL6 0TT appear twenty-eight times in the Land Registry records, with the latest transaction recorded on 2 Sep 2025. It also has eight Energy Performance Certificates (EPC) entries, the earliest dating back to 3 Aug 2021. 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.