Our Data Sources
40, Sibley Avenue, Harpenden has 21 entries in the Land Registry , most recently in December 2018 and a single entry in the EPC database dated July 2014.
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
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 40, Sibley Avenue, Harpenden, we estimate a market value of £1,052,052 and a rental value of £3,584 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £931,818 and £3,174 per month respectively.
Plot Size
HM Land Registry records the plot of land for 40, Sibley Avenue, Harpenden as measuring 600 m2.
That makes it the 7th largest plot in the postcode, where 27 of the 36 other houses have recorded plot data.
Energy Efficiency
40, Sibley Avenue, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 22 Jul 2014.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 40, Sibley Avenue, Harpenden completed on 18th December 2018 at £895,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold twice.
Values of comparable properties have risen by 30.1% over the period since December 2018.
- Sold Dec 2018£895,000
- Sold Jun 1996£181,000
Similar Properties Sold Nearby
Over the past 2 years 168 properties similar to 40, Sibley Avenue, Harpenden have sold within a radius of 780 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 5th September 2025, was 28, Sibley Avenue, Harpenden, AL5 1HF, a freehold house which sold for £793,650.
Read more about house prices in AL5.
- Sold Sep 2025£793,650 | 4 Bed House28, Sibley Avenue, Harpenden, AL5 1HF28, Sibley Avenue, Harpenden, AL5 1HF
- Sold Jun 2022£945,000 | 4 Bed House26, Sibley Avenue, Harpenden, AL5 1HF26, Sibley Avenue, Harpenden, AL5 1HF
- Sold May 2022£867,500 | 4 Bed House39, Meadway, Harpenden, AL5 1JN39, Meadway, Harpenden, AL5 1JN
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 53 addresses on Sibley Avenue, Harpenden, AL5, 40, Sibley Avenue, Harpenden comes out as the 18th largest and the 12th most expensive in our analysis of the public data.
It is also £35k more expensive than the average property across the AL5 district.
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
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
