Our Data Sources
18, Sibley Avenue, Harpenden has 31 entries in the Land Registry , most recently in October 2010 and a single entry in the EPC database dated August 2010.
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 18, Sibley Avenue, Harpenden would be worth £934,172, with a potential rental value of £3,310 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £827,410, with a rental value of £2,931 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
18, Sibley Avenue, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 12 Aug 2010.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
18, Sibley Avenue, Harpenden last changed hands on 29th October 2010, selling for £452,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 3 times since 1995.
The market for similar properties has risen by 88.2% since October 2010.
- Sold Oct 2010£452,000
- Sold Jul 2005£385,000
- Sold Jun 1996£143,500
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 194 sales of comparable properties within 730 metres of 18, Sibley Avenue, Harpenden across the last 2 years.
Most recently, 59, Sibley Avenue, Harpenden, AL5 1HF, a freehold house, sold at £1,100,000 on the 4th December 2025.
Read more about house prices in AL5.
- Sold Dec 2025£1,100,000 | 4 Bed House59, Sibley Avenue, Harpenden, AL5 1HF59, Sibley Avenue, Harpenden, AL5 1HF
- Sold Oct 2025£692,500 | 3 Bed House6, Grove Avenue, Harpenden, AL5 1EX6, Grove Avenue, Harpenden, AL5 1EX
- Sold Jun 2018£665,000 | 4 Bed House16, Sibley Avenue, Harpenden, AL5 1HF16, Sibley Avenue, Harpenden, AL5 1HF
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 18, Sibley Avenue, Harpenden as the 26th largest and the 26th most expensive of the 53 addresses on Sibley Avenue, Harpenden, AL5.
Against the AL5 postcode district average, it is £77k less expensive than the typical property.
More reading links
Schools Nearby
- The Grove Infant and Nursery School300 m away
- The Grove Junior School400 m away
- High Beeches Primary School800 m away
- Katherine Warington School1.8 km away
- Sir John Lawes School2.0 km away
- St George's School2.3 km away
More reading links
Public Transport Nearby
- Harpenden|1.6 km away
- St Albans City|6.3 km away
- St Albans Abbey|6.9 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
