Our Data Sources
3, Mardley Hill, Welwyn has no recent1 records in the the Land Registry and a single entry in the EPC database dated November 2012.
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
In very good condition, we estimate 3, Mardley Hill, Welwyn would be worth £897,211, with a potential rental value of £3,372 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £794,673, with a rental value of £2,987 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
3, Mardley Hill, Welwyn occupies a 992 m2 plot as recorded by HM Land Registry.
All 9 other houses in this postcode have recorded plot sizes, and this one ranks as the 4th largest.
Energy Efficiency
3, Mardley Hill, Welwyn has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 Nov 2012.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
3, Mardley Hill, Welwyn last changed hands on 21st September 2001, selling for £249,000. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
- Sold Sep 2001£249,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 1.3 kilometres of 3, Mardley Hill, Welwyn across the last 2 years.
Most recently, 1, Rosecroft Lane, Welwyn, AL6 0UB, a freehold house, sold at £775,000 on the 12th December 2025.
Read more about house prices in AL6.
- Sold Dec 2025£775,000 | 4 Bed House1, Rosecroft Lane, Welwyn, AL6 0UB1, Rosecroft Lane, Welwyn, AL6 0UB
- Sold May 2025£675,000 | 4 Bed House16, Marlborough Close, Welwyn, AL6 0UG16, Marlborough Close, Welwyn, AL6 0UG
- Sold Dec 2020£930,000 | 5 Bed House4, Marlborough Close, Welwyn, AL6 0UG4, Marlborough Close, Welwyn, AL6 0UG
•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 3, Mardley Hill, Welwyn as the 10th largest and the 18th most expensive of the 39 addresses on Mardley Hill, Welwyn, AL6.
Against the AL6 postcode district average, it is £67k more expensive than the typical property.
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Schools Nearby
- 700mOaklands Primary School
- 800mSt Michael's Woolmer Green CofE VA Primary School
- 2.2kmKnebworth Primary and Nursery School
- 3.2kmMonk's Walk School
- 4.8kmRidgeway Academy
- 5.1kmBarnwell School
More reading links
Public Transport Nearby
- 2.4kmWelwyn North
- 2.4kmKnebworth
- 4.9kmWatton-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.
