40a, Flat 1, High Street, Welwyn, AL6 9EQ
About 40a
40a is an end-of-terrace house in Welwyn (AL6 9EQ). It has a recorded floor area of 88 m² (around 947 sq ft) and construction records dating it to 1900-1929. At 88 m² this is the largest unit on EPC record across 40a (47–88 m²). The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (61 versus a best of 81). The latest certificate (April 2025) shows a D (score 61), on the cusp of jumping into the C band. Earlier certificates rated it C (September 2015); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good; while roof efficiency dropped from Very Good to Very Poor. The recommended improvements would push it to C (score 73).
At 88 m² the property is well over the postcode median (62 m² across 12 EPCs), placing it in the larger end of the local stock.
Know exactly what you're buying at 40a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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
Heating controls changed
Window efficiency improved
More low energy lighting installed
Planning history
40a has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
40a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£428,000
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 9EQ: £390,000 (2023–2011).
Everything we know about 40a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?
Versus other High Street homes
Habitable Rooms for 40a runs comfortably ahead of the street norm.
EPC Rating
61 (D)
Street avg 66 (D)
Floor Area
88 m²
Street avg 68 m²
CO₂ Emissions
4.4 t/year
Street avg 3.2 t/year
Habitable Rooms
4 rooms
Street avg 3 rooms
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Flat 12, 8 Wendover Lodge, Church Street
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Flat 4, 8 Wendover Lodge, Church Street
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Flat 10, 8 Wendover Lodge, Church Street
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Mary's Church — bus stop.
Closest school
0.4 km
Welwyn St Mary's Church of England Voluntary Aided Primary School. 8 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.