Our Data Sources
4, Mardley Avenue, Welwyn has a single entry in the Land Registry from June 2016 and a single entry in the EPC database dated December 2015.
We combine this information with that 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
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 4, Mardley Avenue, Welwyn, we estimate a market value of £652,041 and a rental value of £2,857 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £577,522 and £2,530 per month respectively.
Plot Size
HM Land Registry records the plot of land for 4, Mardley Avenue, Welwyn as measuring 546 m2.
That makes it the 11th largest plot in the postcode, where 12 of the 13 other houses have recorded plot data.
Energy Efficiency
4, Mardley Avenue, Welwyn has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 03 Dec 2015.
The property is 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 4, Mardley Avenue, Welwyn completed on 16th June 2016 at £475,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 26.0% over the period since June 2016.
- Sold Jun 2016£475,000
Similar Properties Sold Nearby
Over the past 2 years 166 properties similar to 4, Mardley Avenue, Welwyn have sold within a radius of 1.2 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 23rd March 2026, was 9, Mardley Hill, Welwyn, AL6 0UE, a freehold house which sold for £600,000.
Read more about house prices in AL6.
- Sold Mar 2026£600,000 | 3 Bed House9, Mardley Hill, Welwyn, AL6 0UE9, Mardley Hill, Welwyn, AL6 0UE
- Sold May 2024£630,000 | 3 Bed House48, Robbery Bottom Lane, Welwyn, AL6 0UN48, Robbery Bottom Lane, Welwyn, AL6 0UN
- Sold Aug 2018£690,000 | 4 Bed House16, Mardley Avenue, Welwyn, AL6 0UD16, Mardley Avenue, Welwyn, AL6 0UD
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 30 addresses on Mardley Avenue, Welwyn, AL6, 4, Mardley Avenue, Welwyn comes out as the 24th largest and the 26th most expensive in our analysis of the public data.
It is also £180k less expensive than the average property across the AL6 district.
More reading links
Schools Nearby
- St Michael's Woolmer Green CofE VA Primary School700 m away
- Oaklands Primary School800 m away
- All Saints Church of England Voluntary Aided Primary School, Datchworth2.1 km away
- Monk's Walk School3.3 km away
- Ridgeway Academy4.9 km away
- Barnwell School5.0 km away
More reading links
Public Transport Nearby
- Knebworth|2.4 km away
- Welwyn North|2.5 km away
- Watton-at-Stone|4.8 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
