Our Data Sources
12, Mardley Hill, Welwyn has 21 entries in the Land Registry , most recently in August 2012 and a single entry in the EPC database dated April 2011.
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 12, Mardley Hill, Welwyn, we estimate a market value of £1,090,985 and a rental value of £3,854 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £966,301 and £3,414 per month respectively.
Plot Size
HM Land Registry records the plot of land for 12, Mardley Hill, Welwyn as measuring 1,138 m2.
That makes it the 2nd largest plot in the postcode, where all 5 other houses have recorded plot data.
Energy Efficiency
12, Mardley Hill, Welwyn has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 12 Apr 2011.
The property is connected to mains gas and has mostly double glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 12, Mardley Hill, Welwyn completed on 31st August 2012 at £582,500 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 86.1% over the period since August 2012.
- Sold Aug 2012£582,500
- Sold Oct 1997£265,000
Similar Properties Sold Nearby
Over the past 2 years 75 properties similar to 12, Mardley Hill, Welwyn have sold within a radius of 1.4 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 31st March 2026, was 12, The Drive, Welwyn, AL6 0TR, a freehold house which sold for £1,200,000.
Read more about house prices in AL6.
- Sold Mar 2026£1,200,000 | 5 Bed House12, The Drive, Welwyn, AL6 0TR12, The Drive, Welwyn, AL6 0TR
- Sold Jan 2026£1,150,000 | 5 Bed House15, Marlborough Close, Welwyn, AL6 0UG15, Marlborough Close, Welwyn, AL6 0UG
- Sold Apr 2012£450,000 | 5 Bed House4A, The Drive, Welwyn, AL6 0TR4A, The Drive, Welwyn, AL6 0TR
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 39 addresses on Mardley Hill, Welwyn, AL6, 12, Mardley Hill, Welwyn comes out as the 5th largest and the 8th most expensive in our analysis of the public data.
It is also £238k more expensive than the average property across the AL6 district.
More reading links
Schools Nearby
- St Michael's Woolmer Green CofE VA Primary School500 m away
- Oaklands Primary School1.0 km away
- Knebworth Primary and Nursery School1.9 km away
- Monk's Walk School3.5 km away
- Barnwell School4.8 km away
- Ridgeway Academy5.1 km away
More reading links
Public Transport Nearby
- Knebworth|2.1 km away
- Welwyn North|2.7 km away
- Watton-at-Stone|4.7 km away
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
