1 The Dell, Welwyn, AL6 0BQ
About 1 The Dell
1 The Dell is a five-bedroom detached house in Welwyn (AL6 0BQ). It has a recorded floor area of 221 m² (around 2379 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (April 2019) shows an E (score 40), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 75), a 2-band jump. Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.
One planning record on file: an extension approved in 2020. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved. Today's modelled estimate of £1,166,000 is 22.7% above the 2019 sale price. Sold November 2019 for £950,000.
Know exactly what you're buying at 1 The Dell
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Bathrooms2
- EnsuiteYes
Outside
- GarageDouble
- Cul-de-sacYes
Building
- Extension potentialPossible
Energy performance
1 The Dell's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Mar 2020Garage ConversionFullIn report
Extension: Side and rear of property
Erection of a two storey side and rear and a two storey rear extension and erection of an infill extension between the house and garage to facilitate garage conversion
Extension- Documents
- 1 doc on file
- Reference
- 6/2020/0092/HOUSE
We flagged 1 thing worth checking at 1 The Dell
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
1 The Dell valuation sits well clear of the typical sold price in this postcode.
£1,166,000
Modelled from EPC, postcode comparables.
£950,000
Recorded with HM Land Registry.
Sales timeline
4 November 2019Most recent
£950,000
Median price across the last 4 sales in AL6 0BQ: £650,000 (2020–2002).
Everything we know about 1 The Dell, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Mornington — bus stop.
Closest school
0.9 km
St John's CofE Primary School. 14 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.