26 Harmer Green Lane, Welwyn, AL6 0AT
About 26 Harmer Green Lane
26 Harmer Green Lane is a detached house in Welwyn (AL6 0AT). It has a recorded floor area of 120 m² (around 1292 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (February 2024) shows a D (score 58), a step below the typical UK home. The recommended improvements would lift it to B (score 81), a 2-band jump.
Most recent transfer was August 2025 at £720,000 — fresh data. At 120 m² it sits well below the postcode median (255 m² across 8 EPCs), making it one of the more compact homes locally. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension, a porch, a conservatory and tree works, meaningful when judging how the property has evolved. On a £-per-square-foot basis, the last sale (£557/sq ft) was about 77.2% above the typical sold price in the postcode.
Know exactly what you're buying at 26 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
Energy performance
26 Harmer Green Lane's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
26 Harmer Green Lane has 2 separate extension applications on the council record.
- Feb 2014PorchFullIn report
Erection of a porch
Extension- Documents
- 15 docs on file
- Reference
- N6/2013/2710/FP
- Oct 2009OutbuildingFullIn report
ERECTION OF TEMPORARY FENCE
- Documents
- 8 docs on file
- Reference
- N6/2009/1777/FP
We flagged 1 thing worth checking at 26 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
£743,000
Modelled from EPC, postcode comparables.
£720,000
Recorded with HM Land Registry.
Sales timeline
19 August 2025Most recent
£720,000
Median price across the last 5 sales in AL6 0AT: £1,726,000 (2022–2015).
Nearby sales in AL6 0AT
38 Harmer Green Lane, Welwyn, AL6 0AT
Sold Mar 2022
£1,775,00044a, Harmer Green Lane, Welwyn, AL6 0AT
Sold Dec 2021
£960,00040 Harmer Green Lane, Welwyn, AL6 0AT
Sold Dec 2021
£1,726,00048a, Harmer Green Lane, Welwyn, AL6 0AT
Sold Oct 2018
£1,885,00042 Harmer Green Lane, Welwyn, AL6 0AT
Sold Nov 2015
£1,150,000
Everything we know about 26 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
Years Held for 26 Harmer Green Lane lags the street by a wide margin.
Price per m²
£6,000
Street avg £4,901
Floor Area
120 m²
Street avg 271 m²
Habitable Rooms
6 rooms
Street avg 9 rooms
CO₂ Emissions
6.5 t/year
Street avg 7.9 t/year
Similar properties nearby
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
Welwyn North Railway Station — bus stop.
Closest school
0.8 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.