Our Data Sources
49, Mardley Hill, Welwyn has 31 entries in the Land Registry , most recently in September 2025 and a single entry in the EPC database dated March 2021.
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 49, Mardley Hill, Welwyn would be worth £936,804, with a potential rental value of £2,802 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £829,741, with a rental value of £2,481 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
49, Mardley Hill, Welwyn occupies a 1,440 m2 plot as recorded by HM Land Registry.
Of the 17 other houses in this postcode, 15 have recorded plot sizes, and this one ranks as the 2nd largest.
Energy Efficiency
49, Mardley Hill, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 09 Mar 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
49, Mardley Hill, Welwyn last changed hands on 2nd September 2025, selling for £950,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 3 times since 1995.
The market for similar properties has risen by 1.6% since September 2025.
- Sold Sep 2025£950,000
- Sold Sep 2009£455,000
- Sold Jun 1996£153,750
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 1.4 kilometres of 49, Mardley Hill, Welwyn across the last 2 years.
Most recently, 1, Hillside Way, Welwyn, AL6 0TY, a freehold house, sold at £775,000 on the 16th August 2021.
Read more about house prices in AL6.
•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 49, Mardley Hill, Welwyn as the 23rd largest and the 13th most expensive of the 39 addresses on Mardley Hill, Welwyn, AL6.
Against the AL6 postcode district average, it is £105k more expensive than the typical property.
More reading links
Schools Nearby
- 500mSt Michael's Woolmer Green CofE VA Primary School
- 1.0kmOaklands Primary School
- 1.9kmAll Saints Church of England Voluntary Aided Primary School, Datchworth
- 3.5kmMonk's Walk School
- 4.8kmBarnwell School
- 5.0kmRidgeway Academy
More reading links
Public Transport Nearby
- 2.2kmKnebworth
- 2.7kmWelwyn North
- 4.7kmWatton-at-Stone
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.
