Our Data Sources
11, Roundfield Avenue, Harpenden has no records in the Land Registry and a single entry in the EPC database dated October 2023.
We combine this information with public data 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
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 11, Roundfield Avenue, Harpenden is in very good condition we estimate a sale value of £784,906 and a rental value of £2,932 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £695,202 and a rental value of £2,597 per month.
Energy Efficiency
11, Roundfield Avenue, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 03 Oct 2023.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 86 sales of properties similar to 11, Roundfield Avenue, Harpenden within a radius of 780 metres since 2019.
The most recent example is 1, Saxon Close, Harpenden, AL5 5HT, a freehold house which sold for £625,000 on the 9th January 2026.
Read more about house prices in AL5.
- Sold Jan 2026£625,000 | 3 Bed House1, Saxon Close, Harpenden, AL5 5HT1, Saxon Close, Harpenden, AL5 5HT
- Sold Dec 2025£785,000 | 3 Bed House5, Waveney Road, Harpenden, AL5 4RU5, Waveney Road, Harpenden, AL5 4RU
- Sold Jul 2025£775,000 | 3 Bed House5, Wroxham Way, Harpenden, AL5 4PP5, Wroxham Way, Harpenden, AL5 4PP
- Sold Mar 2025£749,250 | 3 Bed House50, West Way, Harpenden, AL5 4RD50, West Way, Harpenden, AL5 4RD
- Sold Mar 2025£770,000 | 3 Bed House41, Coldharbour Lane, Harpenden, AL5 4NF41, Coldharbour Lane, Harpenden, AL5 4NF
Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Explore Nearby Properties
The surrounding properties have an average estimated value of £561,426, ranging from £397,015 to £747,529.
- 9 Roundfield Avenue
3 Bed House | 17 m | Est. Value: £718,347
- 15 Roundfield Avenue
3 Bed House | 22 m | Est. Value: £716,852
- 7 Roundfield Avenue
3 Bed House | 26 m | Est. Value: £747,529
- 17 Roundfield Avenue
3 Bed House | 29 m | Est. Value: £656,933
- 12 Fulmore Close
3 Bed House | 39 m | Est. Value: £402,545
Location Comparison
Roundfield Avenue, Harpenden, AL5 has a total of 41 addresses. According to our analysis of all the public data, 11, Roundfield Avenue, Harpenden is the 13th largest and the 3rd most expensive property on the street.
When compared to the postcode district it is £223k less expensive than the average property in AL5.
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Schools Nearby
- Sauncey Wood Primary School200 m away
- Manland Primary School700 m away
- The Lea Primary School and Nursery1.1 km away
- Katherine Warington School600 m away
- Sir John Lawes School700 m away
- St George's School1.1 km away
More reading links
Public Transport Nearby
- Harpenden|1.6 km away
- Luton Airport Parkway|6.5 km away
- Luton|8.1 km away
Available Internet Speeds
According to recent data from Ofcom, Superfast Broadband is available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.





