Our Data Sources
14, Mardley Dell, Welwyn has a single entry in the Land Registry from November 2007 and a single entry in the EPC database dated June 2024.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium 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 14, Mardley Dell, Welwyn is in very good condition we estimate a sale value of £926,023 and a rental value of £2,836 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £820,192 and a rental value of £2,512 per month.
Plot Size
According to data from HM Land Registry, 14, Mardley Dell, Welwyn sits on a plot of 573 m2.
We have plot size data on 16 out of 16 other houses in the postcode and 14, Mardley Dell, Welwyn sits on the 8th largest plot.
Energy Efficiency
14, Mardley Dell, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 18 Jun 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 14, Mardley Dell, Welwyn was last sold on 16th November 2007 for £635,000 and was recorded as a freehold house.
The property has only had this single sale since 1995.
Since November 2007, the market for similar properties has risen by 75.6%.
- Sold Nov 2007£635,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 14, Mardley Dell, Welwyn within a radius of 1.3 kilometres over the last 2 years.
The most recent example is 49, Mardley Hill, Welwyn, AL6 0TT, a freehold house which sold for £950,000 on the 2nd September 2025.
Read more about house prices in AL6.
- Sold Sep 2025£950,000 | 4 Bed House49, Mardley Hill, Welwyn, AL6 0TT49, Mardley Hill, Welwyn, AL6 0TT
- Sold Dec 2024£778,000 | 4 Bed House13, Hillside Way, Welwyn, AL6 0TY13, Hillside Way, Welwyn, AL6 0TY
- Sold Jan 2014£499,000 | 4 Bed House2A, The Drive, Welwyn, AL6 0TR2A, The Drive, Welwyn, AL6 0TR
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Mardley Dell, Welwyn, AL6 has a total of 16 addresses. According to our analysis of all the public data, 14, Mardley Dell, Welwyn is the 13th largest and the 13th most expensive property on the street.
When compared to the postcode district it is £95k more expensive than the average property in AL6.
More reading links
Schools Nearby
- 500mSt Michael's Woolmer Green CofE VA Primary School
- 1.0kmOaklands Primary School
- 1.9kmKnebworth Primary and Nursery School
- 3.5kmMonk's Walk School
- 4.8kmBarnwell School
- 5.1kmRidgeway Academy
More reading links
Public Transport Nearby
- 2.1kmKnebworth
- 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.
