56 Harmer Green Lane, Welwyn, AL6 0AW
About 56 Harmer Green Lane
56 Harmer Green Lane is a four-bedroom detached house in Welwyn (AL6 0AW). It has a recorded floor area of 444 m² (around 4784 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (June 2009) shows an E (score 48), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 59). The latest certificate is from June 2009, so improvements made since then won't be reflected.
Untraded for 17 years, with the last transfer in October 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £2,094,000 sits 89.9% above the 2009 sale of £1,102,500. On a £-per-square-foot basis, the last sale (£230/sq ft) was about 57.1% below the postcode norm.
Know exactly what you're buying at 56 Harmer Green Lane
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
- Bedrooms4
Energy performance
56 Harmer Green Lane's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 29 Jun 2019
EPC Rating
Planning history
56 Harmer Green Lane has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 56 Harmer Green Lane
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
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Sales history & valuation
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£2,094,000
Modelled from EPC, postcode comparables.
£1,102,500
Recorded with HM Land Registry.
Sales timeline
8 October 2009Most recent
£1,102,500
Median price across the last 5 sales in AL6 0AW: £1,150,000 (2023–2000).
Everything we know about 56 Harmer Green Lane, 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
0.2 km
New Road — bus stop.
Closest school
1.1 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.