6a, Harmer Green Lane, Welwyn, AL6 0AD
About 6a
6a is a detached house in Welwyn (AL6 0AD). It has a recorded floor area of 181 m² (around 1948 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (December 2022) shows a C (score 70). When first surveyed in January 2022 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Poor to Average, roof efficiency went from Very Poor to Very Good and window efficiency went from Very Poor to Poor. The recommended improvements would push it to B (score 82).
Know exactly what you're buying at 6a
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Window efficiency improved
Cavity wall insulation installed
Roof insulation improved
More low energy lighting installed
Planning history
6a has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 6a
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
6a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£1,011,000
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 4 sales in AL6 0AD: £436,500 (2022–1998).
Everything we know about 6a, 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
0.4 km
Welwyn North Railway Station — bus stop.
Closest school
0.2 km
St John's CofE Primary School. 17 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.