16 Harmer Green Lane, Welwyn, AL6 0AX
About 16 Harmer Green Lane
16 Harmer Green Lane is a two-bedroom semi-detached house in Welwyn (AL6 0AX). It has a recorded floor area of 99 m² (around 1066 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (January 2021) shows a C (score 71). The recommended improvements would push it to B (score 83).
On energy efficiency it sits in the top 10% of properties in this postcode. 2 bedrooms is on the smaller side for this postcode, where 4 is the typical count. Across 2003–2021, sale prices on this property compounded at 6% per year. Today's modelled estimate of £577,000 is 17.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£460/sq ft) was about 16.6% below the postcode norm. Last sale on file: £490,000 in September 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 16 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
- Bedrooms2
- Bathrooms1
- Dining roomYes
- CloakroomYes
Outside
- GarageEn bloc
Building
- Central heatingYes
- RefurbishedYes
Energy performance
16 Harmer Green Lane ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Planning history
16 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 16 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
Sale price has at least doubled since 2003.
£577,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.0% per year over 19 years.
£490,000
Growth on file: 6.0% per year over 19 years.
Sales timeline
29 September 2021Most recent
£490,000
+197.0%over 18 years21 February 2003
£165,000
Median price across the last 5 sales in AL6 0AX: £480,000 (2024–2009).
Everything we know about 16 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
16 Harmer Green Lane is notably below the street on price per m².
Price per m²
£4,949
Street avg £6,441
Floor Area
99 m²
Street avg 98 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.3 t/year
Street avg 6.3 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
0.0 km
Welwyn North Railway Station — bus stop.
Closest school
0.5 km
St John's CofE Primary School. 15 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.