22 Firs Walk, Tewin, Welwyn, AL6 0NZ
About 22 Firs Walk
22 Firs Walk is a five-bedroom detached house in Tewin, Welwyn, Welwyn (AL6 0NZ). It has a recorded floor area of 230 m² (around 2476 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (February 2022) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 78).
9 planning records sit against the property, 4 approved, 3 refused. Past consents include an extension, partial demolition and a conservatory, meaningful when judging how the property has evolved. Across 1996–2022, sale prices on this property compounded at 7.3% per year. On a £-per-square-foot basis, the last sale (£648/sq ft) was about 106.4% above the typical sold price in the postcode. Last sale on file: £1,605,000 in August 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 22 Firs Walk
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
- Bedrooms5
- Bathrooms3
Energy performance
22 Firs Walk's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
A a loft conversion application was refused at 22 Firs Walk in 2024.
- Oct 2025DemolitionFullIn report
Extension: Side and rear of property
Demolition of garage and raised deck, erection of single storey rear and side extensions with rear canopy, two storey front extension, roof alterations to facilitate loft conversion with two front and one rear dormer windows, rooflight windows, and two chimneys, extension of rear patio, and alterations to fenestration
Extension- Documents
- 27 docs on file
- Reference
- 3/25/1591/HH
- Apr 2025Loft ConversionFullIn report
Extension: Side and rear of property
Demolition of garage and raised deck. Erection of single storey rear and side extensions and two-storey front extension. Alterations to roof to accommodate loft conversion, incorporating two front and one rear dormer windows, roof light windows and two chimneys. Extension of rear patio. Alterations to fenestration.
ExtensionDemolition- Documents
- 20 docs on file
- Reference
- 3/25/0649/HH
We flagged 1 thing worth checking at 22 Firs Walk
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
Price for 22 Firs Walk has grown more than fourfold since the 1996 starting point.
£1,600,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 26 years.
£1,605,000
Growth on file: 7.3% per year over 26 years.
Sales timeline
4 August 2022Most recent
£1,605,000
+301.3%over 23 years6 January 1999
£400,000
+53.8%over 2 years26 November 1996
£260,000
Median price across the last 5 sales in AL6 0NZ: £1,300,000 (2023–2021).
Nearby sales in AL6 0NZ
Everything we know about 22 Firs Walk, 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 Firs Walk homes
22 Firs Walk outperforms the street on habitable rooms by a wide margin.
Price per m²
£6,978
Street avg £5,949
Floor Area
230 m²
Street avg 229 m²
Habitable Rooms
10 rooms
Street avg 8 rooms
CO₂ Emissions
7.9 t/year
Street avg 9.4 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.7 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.