Our Data Sources
7A, Mardley Avenue, Welwyn has 2 entries in the Land Registry , most recently in October 2024 and a single entry in the EPC database dated May 2020.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 7A, Mardley Avenue, Welwyn would be worth £594,762, with a potential rental value of £2,626 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £526,790, with a rental value of £2,326 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
7A, Mardley Avenue, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 May 2020.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
7A, Mardley Avenue, Welwyn last changed hands on 30th October 2024, selling for £500,000. 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 risen by 4.5% since October 2024.
- Sold Oct 2024£500,000
- Sold Jun 2021£425,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 145 sales of comparable properties within 1.2 kilometres of 7A, Mardley Avenue, Welwyn across the last 2 years.
Most recently, 3, Scarff Close, Welwyn, AL6 0SZ, a freehold house, sold at £595,000 on the 2nd April 2026.
Read more about house prices in AL6.
- Sold Apr 2026£595,000 | 3 Bed House3, Scarff Close, Welwyn, AL6 0SZ3, Scarff Close, Welwyn, AL6 0SZ
- Sold Jun 2022£699,995 | 3 Bed House12, Hillside Way, Welwyn, AL6 0TY12, Hillside Way, Welwyn, AL6 0TY
- Sold Sep 2020£468,367 | 3 Bed House10, Hillside Way, Welwyn, AL6 0TY10, Hillside Way, Welwyn, AL6 0TY
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 7A, Mardley Avenue, Welwyn as the 28th largest and the 30th most expensive of the 30 addresses on Mardley Avenue, Welwyn, AL6.
Against the AL6 postcode district average, it is £234k less expensive than the typical property.
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Schools Nearby
- St Michael's Woolmer Green CofE VA Primary School600 m away
- Oaklands Primary School900 m away
- All Saints Church of England Voluntary Aided Primary School, Datchworth2.0 km away
- Monk's Walk School3.4 km away
- Ridgeway Academy4.9 km away
- Barnwell School5.0 km away
More reading links
Public Transport Nearby
- Knebworth|2.3 km away
- Welwyn North|2.5 km away
- Watton-at-Stone|4.7 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.












