Our Data Sources
29, Mardley Hill, Welwyn has 71 entries in the Land Registry , most recently in February 2018 and a single entry in the EPC database dated March 2023.
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
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 29, Mardley Hill, Welwyn is in very good condition we estimate a sale value of £1,088,901 and a rental value of £3,562 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £964,455 and a rental value of £3,155 per month.
Plot Size
According to data from HM Land Registry, 29, Mardley Hill, Welwyn sits on a plot of 722 m2.
We have plot size data on 15 out of 17 other houses in the postcode and 29, Mardley Hill, Welwyn sits on the 13th largest plot.
Energy Efficiency
29, Mardley Hill, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 13 Mar 2023.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and underfloor heating, mains gas.
Sold Prices
According to HM Land Registry, 29, Mardley Hill, Welwyn was last sold on 20th February 2018 for £857,000 and was recorded as a freehold house.
The property has had 7 sales since 1995.
Since February 2018, the market for similar properties has risen by 31.7%.
- Sold Feb 2018£857,000
- Sold Nov 2013£695,000
- Sold Nov 2007£750,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 29, Mardley Hill, Welwyn within a radius of 1.3 kilometres over the last 2 years.
The most recent example is 12, The Drive, Welwyn, AL6 0TR, a freehold house which sold for £1,200,000 on the 31st March 2026.
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 Mar 2025£950,000 | 5 Bed HouseChestnut Lodge, Chestnut Walk, Welwyn, AL6 0SBChestnut Lodge, Chestnut Walk, Welwyn, AL6 0SB
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Mardley Hill, Welwyn, AL6 has a total of 39 addresses. According to our analysis of all the public data, 29, Mardley Hill, Welwyn is the 6th largest and the 6th most expensive property on the street.
When compared to the postcode district it is £250k more expensive than the average property in AL6.
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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
According to recent data from Ofcom, superfast broadband is available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.
