9, Mardley Dell
9, Mardley Dell
Description & Estimates
9, Mardley Dell, Welwyn is described in the public record as a modern house with 1,603 ft2 of internal area, sitting on a 522 m2 plot.
Locally, houses of this size normally have 4 bedrooms with a garden.
Our estimate of the sale value of 9, Mardley Dell, Welwyn is £888,612 and its rental estimate is £2,706 per month, given the available information and assuming reasonable condition.
Mardley Dell, Welwyn, AL6 falls within the AL6 postal district, in the borough of Welwyn Hatfield.
Our Data Sources
9, Mardley Dell, Welwyn has no records in the the Land Registry and a single entry in the EPC database dated June 2012.
We combine this information with public data 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
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 9, Mardley Dell, Welwyn, we estimate a market value of £933,043 and a rental value of £2,841 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £826,409 and £2,516 per month respectively.
Recent Market Change
Over the last year, 9, Mardley Dell, Welwyn has seen its estimated sale value move down by £10,263 (1.2%) and its estimated rental value increase by £89 per month (3.3%). This results in an estimated gross rental yield of 3.7%.
Plot Size
HM Land Registry records the plot of land for 9, Mardley Dell, Welwyn as measuring 522 m2.
That makes it the 12th largest plot in the postcode, where all 16 other houses have recorded plot data.
Energy Efficiency
9, Mardley Dell, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 12 Jun 2012.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 9, Mardley Dell, Welwyn have sold within a radius of 1.3 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 12th December 2025, was 1, Rosecroft Lane, Welwyn, AL6 0UB, a freehold house which sold for £775,000.
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
Of the 16 addresses on Mardley Dell, Welwyn, AL6, 9, Mardley Dell, Welwyn comes out as the 10th largest and the 10th most expensive in our analysis of the public data.
It is also £101k more expensive than the average property across the AL6 district.
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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
From 9, Mardley Dell, Welwyn, the nearest station is Knebworth, 2.1 kilometres away.
- 2.1kmKnebworth
- 2.7kmWelwyn North
- 4.7kmWatton-at-Stone
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.
