11 Cowpers Way, Tewin, Welwyn, AL6 0NU
About 11 Cowpers Way
11 Cowpers Way is a detached house in Tewin, Welwyn, Welwyn (AL6 0NU). It has a recorded floor area of 479 m² (around 5156 sq ft), construction records dating it to 2023 and council tax band G. The latest certificate (March 2023) returns a high B (score 86), putting the home a stone's throw from an A rating. When first surveyed in December 2013 the rating was E, the property has climbed 3 bands since. Between certificates, wall efficiency went from Poor to Very Good, roof efficiency went from Good to Very Good and window efficiency went from Very Poor to Very Good. The recommended improvements would push it to A (score 93).
At 479 m² the property is well over the postcode median (194 m² across 3 EPCs), placing it in the larger end of the local stock. Across 2002–2016, sale prices on this property compounded at 2.9% per year. Today's modelled estimate of £2,799,000 sits 211% above the 2016 sale of £900,000. On a £-per-square-foot basis, the last sale (£175/sq ft) was about 54.3% below the postcode norm. 9 planning records sit against the property, 6 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. Last changed hands 9 years ago, in December 2016.
Know exactly what you're buying at 11 Cowpers Way
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
Achieving this rating across a home of this size is uncommon — larger homes typically score lower.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
High performance glazing installed
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
Floor insulation added or improved
More low energy lighting installed
Planning history
11 Cowpers Way has been extended on multiple sides of the property across separate planning applications.
- Apr 2022ExtensionFullIn report
Extension: Two storey · Side of property
Two storey side extension.
- Documents
- 11 docs on file
- Reference
- 3/21/1731/HH
- Aug 2021ConditionsIn report
Discharge condition 6 (landscaping) attached to 3/19/1674/VAR
- Documents
- 8 docs on file
- Reference
- X/21/0234/CND
We flagged 1 thing worth checking at 11 Cowpers Way
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
11 Cowpers Way's modelled value sits at over four times its earliest registered sale price (2002).
£2,799,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 15 years.
£900,000
Growth on file: 2.9% per year over 15 years.
Sales timeline
12 December 2016Most recent
£900,000
+32.4%over 11 years9 May 2005
£680,000
+14.3%over 3 years25 March 2002
£595,000
Median price across the last 5 sales in AL6 0NU: £962,500 (2021–2001).
Everything we know about 11 Cowpers Way, 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 Cowpers Way homes
11 Cowpers Way outperforms the street on epc rating by a wide margin.
EPC Rating
86 (B)
Street avg 64 (D)
Floor Area
479 m²
Street avg 194 m²
CO₂ Emissions
5.3 t/year
Street avg 7.5 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
Desborough Drive — bus stop.
Closest school
1.9 km
Tewin Cowper Church of England Voluntary Aided Primary School. 7 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.