45 Harmer Green Lane, Welwyn, AL6 0AP
About 45 Harmer Green Lane
45 Harmer Green Lane is a detached house in Welwyn (AL6 0AP). It has a recorded floor area of 355 m² (around 3821 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (April 2014) shows a D (score 61), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 75). The latest certificate is from April 2014, so improvements made since then won't be reflected.
At 355 m² it sits well below the postcode median (557 m² across 6 EPCs), making it one of the more compact homes locally. 5 planning records sit against the property, 4 approved, 1 refused. Past consents include tree works and an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 45 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
45 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This certificate is over 10 years old and is no longer valid.Expired 22 Apr 2024
EPC Rating
Planning history
45 Harmer Green Lane has been through 4 approved planning applications — a well-evolved property.
- Apr 2022Tree WorksTreesIn report
Fell 11 x Horse Chestnut trees (T2, T3, T5, T6, T9, T11, T12, T13, T14, T15 & T20) Fell 3 x Ash trees (T4, T10 & T19) Fell 1 x Pine tree (T8) Fell 1 x dead Elm tree (T1) Fell 1 x dead Oak tree to 4m and retain as a monolith for habitat (T18) Reduce 1 x Beech (T16) by 30% Trim 1x Yew by 1 metre (T17) covered by TPO 658 (2017) previously approved under 6/2017/2739/TPO
- Reference
- 6/2022/0566/TPO
- Jan 2018Tree WorksTreesIn report
Fell 12 x Horse Chestnut trees, 1 x Ash tree, 1 x Pine tree, 1 x Thorn tree and 1 x Oak tree and reduce 1 x Ash tree by 5 meters covered by TPO 658 (2017)
- Reference
- 6/2017/2739/TPO
We flagged 1 thing worth checking at 45 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
45 Harmer Green Lane has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£1,817,000
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 0AP: £2,080,000 (2023–2006).
Nearby sales in AL6 0AP
Everything we know about 45 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
45 Harmer Green Lane is notably below the street on co₂ emissions.
EPC Rating
61 (D)
Street avg 73 (C)
Floor Area
355 m²
Street avg 455 m²
CO₂ Emissions
13.0 t/year
Street avg 7.4 t/year
Habitable Rooms
12 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
0.3 km
New Road — bus stop.
Closest school
1.2 km
St John's CofE Primary School. 12 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.