48 Harmer Green Lane, Welwyn, AL6 0AT
About 48 Harmer Green Lane
48 Harmer Green Lane is a detached house in Welwyn (AL6 0AT). It has a recorded floor area of 353 m² (around 3800 sq ft), construction records dating it to 2007 onwards and council tax band G. The latest certificate (August 2018) shows a C (score 80), near the top of the C band. The recommended improvements would push it to B (score 83).
At 353 m² the property is well over the postcode median (241 m² across 8 EPCs), placing it in the larger end of the local stock.
Know exactly what you're buying at 48 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
48 Harmer Green Lane's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
48 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 48 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
48 Harmer Green Lane has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£1,632,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
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 48 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
On habitable rooms, 48 Harmer Green Lane stands well clear of the street.
EPC Rating
80 (C)
Street avg 64 (D)
Floor Area
353 m²
Street avg 242 m²
CO₂ Emissions
6.1 t/year
Street avg 7.9 t/year
Habitable Rooms
11 rooms
Street avg 8 rooms
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.