1a, Desborough Drive, Tewin, Welwyn, AL6 0HQ
About 1a
1a is a four-bedroom detached house in Tewin, Welwyn, Welwyn (AL6 0HQ). It has a recorded floor area of 175 m² (around 1884 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (October 2019) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 73).
One planning record on file: an extension approved in 2026. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. Across 2001–2024, sale prices on this property compounded at 4% per year. On a £-per-square-foot basis, the last sale (£770/sq ft) was about 109.4% above the typical sold price in the postcode. At 175 m² it's 18% smaller than the typical home in the postcode (214 m² median across 8 EPCs). Most recent transfer: October 2024 at £1,450,000.
Know exactly what you're buying at 1a
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
- Bedrooms4
- Bathrooms2
Energy performance
1a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Mar 2026Loft ConversionOutlineIn report
Extension: Rear of property
Part double storey, part single storey rear extension, loft conversion with rear dormer, erection of outbuilding and garage
Extension- Documents
- 14 docs on file
- Reference
- 3/25/1905/CLPO
We flagged 1 thing worth checking at 1a
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
Sale price has at least doubled since 2001.
£1,561,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.0% per year over 23 years.
£1,450,000
Growth on file: 4.0% per year over 23 years.
Sales timeline
17 October 2024Most recent
£1,450,000
+143.7%over 22 years12 December 2001
£595,000
Median price across the last 5 sales in AL6 0HQ: £1,000,000 (2024–2013).
Nearby sales in AL6 0HQ
5 Desborough Drive, Tewin, Welwyn, AL6 0HQ
Sold Jun 2024
£1,740,00011 Desborough Drive, Tewin, Welwyn, AL6 0HQ
Sold Feb 2021
£1,575,0001 Desborough Drive, Tewin, Welwyn, AL6 0HQ
Sold Oct 2020
£925,0009a, Desborough Drive, Tewin, Welwyn, AL6 0HQ
Sold Aug 2018
£1,000,0005a, Desborough Drive, Tewin, Welwyn, AL6 0HQ
Sold Jun 2011
£850,000
Everything we know about 1a, 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 Desborough Drive homes
Price per m² for 1a runs comfortably ahead of the street norm.
Price per m²
£8,286
Street avg £4,554
Floor Area
175 m²
Street avg 235 m²
Habitable Rooms
8 rooms
Street avg 9 rooms
CO₂ Emissions
7.3 t/year
Street avg 9.3 t/year
Similar properties nearby
1 Badgers Walk, Tewin
AL6 0HP
1 Churchfield Road, Tewin
AL6 0JW
1 Chestnut Walk
AL6 0SB
1 Barneswood
AL6 0EU
1 Copper Beeches
AL6 0SS
1 Bluebells
AL6 0XD
1 Desborough Drive, Tewin
AL6 0HQ
1 Acorn Glade, Digswell
AL6 0AZ
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Desborough Drive — bus stop.
Closest school
1.8 km
Tewin Cowper 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.