Our Data Sources
20A, Park Avenue South, Harpenden has 2 entries in the Land Registry , most recently in February 2023 and a single entry in the EPC database dated October 2022.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate 20A, Park Avenue South, Harpenden would be worth £2,429,586, with a potential rental value of £5,431 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £2,151,919, with a rental value of £4,810 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
20A, Park Avenue South, Harpenden occupies a 1,096 m2 plot as recorded by HM Land Registry.
Of the 13 other houses in this postcode, 11 have recorded plot sizes, and this one ranks as the 11th largest.
Energy Efficiency
20A, Park Avenue South, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 12 Oct 2022.
The property is connected to mains gas and has single glazed windows. It is heated using Warm air, mains gas.
Sold Prices
20A, Park Avenue South, Harpenden last changed hands on 1st February 2023, selling for £1,812,500. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has dropped by 26.9% since February 2023.
- Sold Feb 2023£1,812,500
- Sold Feb 2023£2,125,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 43 sales of comparable properties within 1.1 kilometres of 20A, Park Avenue South, Harpenden across the last 2 years.
Most recently, 4, Maple Road, Harpenden, AL5 2DS, a freehold house, sold at £2,300,000 on the 23rd July 2025.
Read more about house prices in AL5.
- Sold Jul 2025£2,300,000 | 5 Bed House4, Maple Road, Harpenden, AL5 2DS4, Maple Road, Harpenden, AL5 2DS
- Sold Jun 2025£2,195,000 | 5 Bed House11C, Douglas Road, Harpenden, AL5 2EN11C, Douglas Road, Harpenden, AL5 2EN
- Sold Jan 2021£1,931,000 | 5 Bed House2, Orchard Avenue, Harpenden, AL5 2DP2, Orchard Avenue, Harpenden, AL5 2DP
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 20A, Park Avenue South, Harpenden as the 26th largest and the 20th most expensive of the 29 addresses on Park Avenue South, Harpenden, AL5.
Against the AL5 postcode district average, it is £1.347m more expensive than the typical property.
More reading links
Schools Nearby
- Roundwood Primary School600 m away
- St Nicholas CofE VA Primary School700 m away
- Harpenden Academy1.0 km away
- Roundwood Park School700 m away
- St George's School1.3 km away
- Sir John Lawes School1.8 km away
More reading links
Public Transport Nearby
- Harpenden|1.1 km away
- Luton Airport Parkway|6.8 km away
- St Albans City|7.7 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












