Over the past 31 years, there have been 35 property sales recorded in the AL5 3LT postcode area. The highest sale price reached £1,090,000, while the most recent sale was for a semi-detached house sold in November 2025 for £985,500.

The estimated average property value in AL5 3LT currently stands at £924,942, 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 £7,407.

Property prices in AL5 3LT have risen by 3.9% over the past year , with a total increase of 18.6% over the past five years , and a long-term rise of 39.4% over the past decade .

The most common type of property sold in the area is detached, making up around 51% of transactions , followed by semi-detached.

Housing in AL5 3LT is predominantly owner-occupied, with an estimated 93% of homes being lived in by the owners.

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Property Sales

15 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

Today
£822,995
streetscan.co.uk estimate
13 Aug 2002
£290,000
16 Feb 1999
£189,950

17 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

Today
£937,954
streetscan.co.uk estimate
29 Apr 2004
£375,000
4 May 2001
£249,950

18 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 6bed
📐 1319 sq ft
Today
£897,551
streetscan.co.uk estimate
27 Jan 2014
£550,000
1 Jul 1997
£173,000
More details

19 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 6bed
📐 1528 sq ft
Today
£1,006,945
streetscan.co.uk estimate
12 Nov 2025
£985,500
14 Aug 2007
£437,500
View +2 more
More details

21 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 6bed
📐 1163 sq ft
Today
£873,654
streetscan.co.uk estimate
12 Nov 2021
£795,000
More details

22 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

Today
£835,515
streetscan.co.uk estimate
27 Apr 2000
£220,000

23 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 7bed
📐 1636 sq ft
Today
£756,940
streetscan.co.uk estimate
22 Sep 2011
£425,000
More details

24 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 6bed
📐 1324 sq ft
Today
£843,367
streetscan.co.uk estimate
22 Oct 2024
£845,000
15 Aug 2007
£490,000
More details

26 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 8bed
📐 1270 sq ft
Today
£845,940
streetscan.co.uk estimate
24 May 2018
£710,000
More details

28 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Semi-detached
🛏️ 5bed
📐 969 sq ft
Today
£780,605
streetscan.co.uk estimate
10 Nov 2015
£600,000
More details

31 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 4bed
📐 775 sq ft
Today
£756,089
streetscan.co.uk estimate
28 Jun 2021
£670,000
More details

32 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 9bed
📐 1894 sq ft
Today
£1,252,446
streetscan.co.uk estimate
12 Sep 2017
£1,090,000
More details

33 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 6bed
📐 1582 sq ft
Today
£1,207,417
streetscan.co.uk estimate
9 May 2011
£685,000
19 Feb 2010
£335,000
View +1 more
More details

35 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 5bed
📐 2034 sq ft
Today
£631,250
streetscan.co.uk estimate
23 Nov 2012
£375,000
More details

36 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

Today
£893,944
streetscan.co.uk estimate
28 Jun 2001
£285,000
28 Nov 1995
£145,000

37 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

Today
£800,000
streetscan.co.uk estimate
12 Dec 2003
£320,000
10 Aug 2001
£181,000

38 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 8bed
📐 1483 sq ft
Today
£1,311,816
streetscan.co.uk estimate
9 Dec 2009
£665,000
21 Sep 2006
£454,000
View +1 more
More details

39 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 6bed
📐 2250 sq ft
Today
£1,357,440
streetscan.co.uk estimate
27 Sep 2013
£840,000
17 Jan 2011
£356,000
More details

40 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 7bed
📐 1335 sq ft
Today
£865,376
streetscan.co.uk estimate
20 Mar 2020
£730,000
More details

42 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

🏠 Detached
🛏️ 6bed
📐 1453 sq ft
Today
£1,180,000
streetscan.co.uk estimate
30 Oct 2009
£590,000
More details

43 Ridge Avenue, Harpenden, St Albans, Hertfordshire, AL5 3LT

Today
£694,633
streetscan.co.uk estimate
23 Jul 1999
£168,500

Area Insights

Data Sources

Properties at AL5 3LT appear thirty-five times in the Land Registry records, with the latest transaction recorded on 12 Nov 2025. It also has fifteen Energy Performance Certificates (EPC) entries, the earliest dating back to 29 Sep 2016. 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.