23 Harmer Green Lane, Welwyn, AL6 0AS
About 23 Harmer Green Lane
23 Harmer Green Lane is a five-bedroom detached house in Welwyn (AL6 0AS). It has a recorded floor area of 233 m² (around 2508 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (February 2013) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 75). The latest certificate is from February 2013, so improvements made since then won't be reflected. Other recorded features include a self-contained annexe. Records show the property has been extended at some point in its history. The home occupies a corner plot.
Today's modelled estimate of £1,284,000 sits 52.9% above the 2013 sale of £840,000. On a £-per-square-foot basis, the last sale (£335/sq ft) was about 22.3% above the typical sold price in the postcode. At 233 m² it's 27.2% larger than the typical home in the postcode (183 m² median across 7 EPCs). On the market in August 2013 and unlisted since — roughly 13 years.
Know exactly what you're buying at 23 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
- Bedrooms5
Outside
- Corner plotYes
Building
- Previously extendedYes
Energy performance
23 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This certificate is over 10 years old and is no longer valid.Expired 11 Feb 2023
EPC Rating
Planning history
23 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 23 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
30-day money-back guarantee
Sales history & valuation
23 Harmer Green Lane valuation sits well clear of the typical sold price in this postcode.
£1,284,000
Modelled from EPC, postcode comparables.
£840,000
Recorded with HM Land Registry.
Sales timeline
27 August 2013Most recent
£840,000
Median price across the last 5 sales in AL6 0AS: £776,000 (2025–2011).
Nearby sales in AL6 0AS
Everything we know about 23 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
Versus other Harmer Green Lane homes
23 Harmer Green Lane is notably below the street on co₂ emissions.
Price per m²
£3,605
Street avg £4,129
Floor Area
233 m²
Street avg 220 m²
Habitable Rooms
10 rooms
Street avg 8 rooms
CO₂ Emissions
8.5 t/year
Street avg 5.5 t/year
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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
0.3 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.