31 Mill Lane, Welwyn, AL6 9EU
About 31 Mill Lane
31 Mill Lane is a detached house in Welwyn (AL6 9EU). It has a recorded floor area of 269 m² (around 2895 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (September 2024) shows a D (score 57), a step below the typical UK home. The recommended improvements would push it to C (score 72).
Held since December 1997 — that's 28 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 269 m² the property is well over the postcode median (72 m² across 8 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £2,048,000 sits 169.5% above the 1997 sale of £760,000. 7 planning records sit against the property, 2 approved, 2 refused. Past consents include new windows and tree works, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations.
Know exactly what you're buying at 31 Mill Lane
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
31 Mill Lane's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Nov 2024Tree WorksTreesIn report
T1 Yew to cut back overhanging branches to the boundary.
- Reference
- 6/2024/2010/TC
- Mar 2024Tree WorksTreesIn report
T1-Sycamore-Reduce crown all round by 2-3 metres to maintain size and shape and to allow more light
- Reference
- 6/2024/0301/TC
What's in 31 Mill Lane, Welwyn, AL6 9EU's planning history?
5 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
31 Mill Lane has been held in the same hands since before 2000.
£2,048,000
Modelled from EPC, postcode comparables.
£760,000
Recorded with HM Land Registry.
Sales timeline
16 December 1997Most recent
£760,000
Median price across the last 1 sales in AL6 9EU: £650,000 (2024–2024).
Nearby sales in AL6 9EU
Everything we know about 31 Mill Lane, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Mill Lane homes
31 Mill Lane outperforms the street on floor area by a wide margin.
EPC Rating
57 (D)
Street avg 64 (D)
Floor Area
269 m²
Street avg 84 m²
CO₂ Emissions
11.0 t/year
Street avg 2.6 t/year
Similar properties nearby
1 Church Cottages, Bibbs Hall Lane, Ayot St Lawrence
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1 Dewars Close
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1 Dolphin Court
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1 Butterwick Way
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1 Akers Court
AL6 9FF
1 Frythe Avenue
AL6 9GF
1 Codicote Road
AL6 9LY
1 Danesbury Cottages, Danesbury Park Road
AL6 9SF
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Mary's Church — bus stop.
Closest school
0.5 km
Welwyn St Mary's Church of England Voluntary Aided Primary School. 10 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.