13 School Lane, Tewin, Welwyn, AL6 0JR
About 13 School Lane
13 School Lane is a three-bedroom detached house in Tewin, Welwyn, Welwyn (AL6 0JR). It has a recorded floor area of 110 m² (around 1184 sq ft) and construction records dating it to 1930-1949. The latest certificate (July 2025) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2008. Between certificates, roof efficiency went from Poor to Average and lighting went from Poor to Good; while wall efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 75).
Today's modelled estimate of £734,000 sits 59.6% above the 2011 sale of £460,000. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. At 110 m² it's 29.4% larger than the typical home in the postcode (85 m² median across 7 EPCs). On the market in November 2011 and unlisted since — roughly 15 years.
Know exactly what you're buying at 13 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
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Roof insulation improved
More low energy lighting installed
Planning history
13 School Lane has 2 separate extension applications on the council record.
- Dec 2007ExtensionFullIn report
Extension: Single storey · Side of property
Single storey side extension and first floor side extension
- Reference
- 3/07/2217/FP
- Sept 2007ExtensionFullIn report
Extension: Single storey · Side of property
First floor side extension pitched roof to existing flat roof
- Documents
- 2 docs on file
- Reference
- 3/07/1531/FP
We flagged 1 thing worth checking at 13 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
13 School Lane valuation sits well clear of the typical sold price in this postcode.
£734,000
Modelled from EPC, postcode comparables.
£460,000
Recorded with HM Land Registry.
Sales timeline
1 November 2011Most recent
£460,000
Median price across the last 5 sales in AL6 0JR: £500,000 (2024–2015).
Nearby sales in AL6 0JR
Everything we know about 13 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
Floor Area for 13 School Lane runs comfortably ahead of the street norm.
Price per m²
£4,182
Street avg £5,211
Floor Area
110 m²
Street avg 89 m²
Habitable Rooms
6 rooms
Street avg 4 rooms
CO₂ Emissions
3.7 t/year
Street avg 4.9 t/year
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1 Churchfield Road, Tewin
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1 Badgers Walk, Tewin
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1 Colyer Close, Digswell
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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.