Our Data Sources
17, Mardley Hill, Welwyn has a single entry in the Land Registry from April 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 17, Mardley Hill, Welwyn, we estimate a market value of £930,796 and a rental value of £2,939 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £824,419 and £2,603 per month respectively.
Plot Size
HM Land Registry records the plot of land for 17, Mardley Hill, Welwyn as measuring 1,287 m2.
That makes it the 2nd largest plot in the postcode, where all 9 other houses have recorded plot data.
Energy Efficiency
17, Mardley Hill, 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 mostly double glazing. It is heated using Warm air, mains gas.
Sold Prices
The most recent sale of 17, Mardley Hill, Welwyn completed on 18th April 2016 at £600,000 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 27.7% over the period since April 2016.
- Sold Apr 2016£600,000
Similar Properties Sold Nearby
Over the past 2 years 117 properties similar to 17, Mardley Hill, Welwyn have sold within a radius of 1.2 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 5th November 2025, was 4A, Heathbrow Road, Welwyn, AL6 0QG, a freehold house which sold for £747,218.
Read more about house prices in AL6.
- Sold Nov 2025£747,218 | 4 Bed House4A, Heathbrow Road, Welwyn, AL6 0QG4A, Heathbrow Road, Welwyn, AL6 0QG
- Sold Sep 2025£950,000 | 4 Bed House49, Mardley Hill, Welwyn, AL6 0TT49, Mardley Hill, Welwyn, AL6 0TT
- Sold Aug 2024£900,000 | 4 Bed House11, Hangmans Lane, Welwyn, AL6 0TJ11, Hangmans Lane, Welwyn, AL6 0TJ
•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, 17, Mardley Hill, Welwyn comes out as the 24th largest and the 17th most expensive in our analysis of the public data.
It is also £86k more expensive than the average property across the AL6 district.
More reading links
Schools Nearby
- Oaklands Primary School700 m away
- St Michael's Woolmer Green CofE VA Primary School800 m away
- Knebworth Primary and Nursery School2.2 km away
- Monk's Walk School3.2 km away
- Ridgeway Academy4.8 km away
- Barnwell School5.1 km away
More reading links
Public Transport Nearby
- Welwyn North|2.4 km away
- Knebworth|2.4 km away
- Watton-at-Stone|4.9 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.
