32 Harmer Green Lane, Welwyn, AL6 0AT
About 32 Harmer Green Lane
32 Harmer Green Lane is a five-bedroom detached house in Welwyn (AL6 0AT). It has a recorded floor area of 166 m² (around 1786 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (June 2011) shows an E (score 49), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 63). The latest certificate is from June 2011, so improvements made since then won't be reflected. Other recorded features include a self-contained annexe and attached land beyond the plot. Our model identifies extension potential, subject to local planning policy.
Today's modelled estimate of £896,000 sits 50.6% above the 2012 sale of £595,000. At 166 m² it sits well below the postcode median (255 m² across 8 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). 4 planning records sit against the property, 3 approved, 1 refused. Past consents include an extension, a porch, partial demolition and a conservatory, meaningful when judging how the property has evolved. Last changed hands 14 years ago, in February 2012.
Know exactly what you're buying at 32 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
- GarageDouble
- LandYes
Building
- Heating systemGas
- Extension potentialPossible
Energy performance
32 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This certificate is over 10 years old and is no longer valid.Expired 06 Jun 2021
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Nov 2017PorchFullIn report
Extension: Side and rear of property
Erection of a single storey rear and side flank extension, gable end pitched roof and front porch, following demolition of existing conservatory (Part Retrospective)
RetrospectiveExtensionDemolition- Reference
- 6/2017/1907/HOUSE
- Feb 2014Demolition And RebuildOutlineIn report
Outline permission for demolition of existing bungalow and erection of two new dwellings
- Documents
- 17 docs on file
- Reference
- N6/2013/2546/OP
We flagged 1 thing worth checking at 32 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
£896,000
Modelled from EPC, postcode comparables.
£595,000
Recorded with HM Land Registry.
Sales timeline
6 February 2012Most recent
£595,000
Median price across the last 5 sales in AL6 0AT: £1,726,000 (2025–2018).
Nearby sales in AL6 0AT
26 Harmer Green Lane, Welwyn, AL6 0AT
Sold Aug 2025
£720,00038 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
£1,885,000
Everything we know about 32 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
EPC Rating for 32 Harmer Green Lane lags the street by a wide margin.
Price per m²
£3,586
Street avg £5,246
Floor Area
166 m²
Street avg 265 m²
Habitable Rooms
7 rooms
Street avg 8 rooms
CO₂ Emissions
9.5 t/year
Street avg 7.5 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
0.2 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.