46 Harmer Green Lane, Welwyn, AL6 0AT
About 46 Harmer Green Lane
46 Harmer Green Lane is a property in Welwyn (AL6 0AT). It has council tax band H.
Untraded for 27 years, with the last transfer in October 1999. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. 8 planning records sit against the property, 8 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 46 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
No EPC on record
This property doesn't have an Energy Performance Certificate yet. An EPC is required to sell or let — and unlocks our automated valuation.
Planning history
46 Harmer Green Lane has been extended on multiple sides of the property across separate planning applications.
- Dec 2022ExtensionFullIn report
Extension: Single storey · Side of property
Erection of single storey side extension, alteration to rooflights, new steps to terrace and extension to balustrade
- Documents
- 1 doc on file
- Reference
- 6/2022/2465/HOUSE
- Jun 2020ExtensionFullIn report
Extension: Single storey · Side and rear of property
Erection of a single storey side and rear infill extension
- Reference
- 6/2020/0808/HOUSE
We flagged 1 thing worth checking at 46 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
46 Harmer Green Lane has been held in the same hands since before 2000.
£500,000
Recorded with HM Land Registry.
Sales timeline
14 October 1999Most recent
£500,000
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 46 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

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.