Our Data Sources
Flat 3, Old Post House 20, Harpenden has a single entry in the Land Registry from September 2014 and a single entry in the EPC database dated June 2024.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate Flat 3, Old Post House 20, Harpenden would be worth £687,347, with a potential rental value of £2,088 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £608,793, with a rental value of £1,849 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 3, Old Post House 20, Harpenden has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 17 Jun 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and underfloor heating, mains gas.
Sold Prices
Flat 3, Old Post House 20, Harpenden last changed hands on 24th September 2014, selling for £500,000. The transaction was logged as a leasehold flat by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has dropped by 32.7% since September 2014.
- Sold Sep 2014£500,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 39 sales of comparable properties within 650 metres of Flat 3, Old Post House 20, Harpenden across the last 2 years.
Most recently, Flat 6, Bennets Lodge 21A, Leyton Road, Harpenden, AL5 2HU, a leasehold flat, sold at £620,000 on the 7th November 2025.
Read more about house prices in AL5.
- Sold Nov 2025£620,000 | 3 Bed FlatFlat 6, Bennets Lodge 21A, Leyton Road, Harpenden, AL5 2HUFlat 6, Bennets Lodge 21A, Leyton Road, Harpenden, AL5 2HU
- Sold Sep 2024£622,500 | 3 Bed FlatFlat 10, Arden Court, Arden Grove, Harpenden, AL5 4SJFlat 10, Arden Court, Arden Grove, Harpenden, AL5 4SJ
- Sold Sep 2014£550,000 | 3 Bed FlatFlat 6, Old Post House 20, Arden Grove, Harpenden, AL5 4SJFlat 6, Old Post House 20, Arden Grove, Harpenden, AL5 4SJ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks Flat 3, Old Post House 20, Harpenden as the 18th largest and the 18th most expensive of the 55 addresses on Arden Grove, Harpenden, AL5.
Against the AL5 postcode district average, it is £312k less expensive than the typical property.
More reading links
Schools Nearby
- Harpenden Academy200 m away
- St Dominic Catholic Primary School300 m away
- St Nicholas CofE VA Primary School500 m away
- St George's School900 m away
- Sir John Lawes School1.0 km away
- Roundwood Park School1.5 km away
More reading links
Public Transport Nearby
- Harpenden|100 m away
- Luton Airport Parkway|7.2 km away
- St Albans City|7.3 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.
