12 School Lane, Tewin, Welwyn, AL6 0JR
About 12 School Lane
12 School Lane is a three-bedroom detached house in Tewin, Welwyn, Welwyn (AL6 0JR). It has a recorded floor area of 109 m² (around 1173 sq ft) and construction records dating it to 1950-1966. The latest certificate (October 2023) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 79).
At 109 m² it's 28.2% larger than the typical home in the postcode (85 m² median across 7 EPCs). Across 1996–2024, sale prices on this property compounded at 5.8% per year. On a £-per-square-foot basis, the last sale (£597/sq ft) was about 52.8% above the typical sold price in the postcode. Sold May 2024 for £700,000.
Know exactly what you're buying at 12 School 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
- Bedrooms3
- Bathrooms1
Energy performance
EPC Rating
Planning history
12 School Lane has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 12 School 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
Latest sale on 12 School Lane was the highest on Land Registry record across the postcode.
£706,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.8% per year over 28 years.
£700,000
Growth on file: 5.8% per year over 28 years.
Sales timeline
2 May 2024Most recent
£700,000
+373.0%over 27 years21 October 1996
£148,000
Median price across the last 5 sales in AL6 0JR: £460,000 (2024–2011).
Nearby sales in AL6 0JR
Everything we know about 12 School 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 School Lane homes
12 School Lane outperforms the street on floor area by a wide margin.
Price per m²
£6,422
Street avg £4,837
Floor Area
109 m²
Street avg 90 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.9 t/year
Street avg 4.7 t/year
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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
Grasswarren Estate — bus stop.
Closest school
0.2 km
Tewin Cowper Church of England Voluntary Aided Primary School. 10 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.