33 Firs Walk, Tewin, Welwyn, AL6 0NY
About 33 Firs Walk
33 Firs Walk is a six-bedroom detached house in Tewin, Welwyn, Welwyn (AL6 0NY). It has a recorded floor area of 255 m² (around 2745 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (May 2022) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). Other recorded features include a conservatory.
A recent sale: £1,500,000 in March 2025. One planning record on file: an extension approved in 2007. Past consents include an extension, a loft conversion and a porch, meaningful when judging how the property has evolved. At 255 m² it's 15.4% larger than the typical home in the postcode (221 m² median across 14 EPCs). 6 bedrooms is on the larger side for this postcode, where 5 is the typical count. Across 1996–2025, sale prices on this property compounded at 5.8% per year. On a £-per-square-foot basis, the last sale (£546/sq ft) was about 52.1% above the typical sold price in the postcode.
Know exactly what you're buying at 33 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
- Bedrooms6
- Bathrooms3
- Dining roomYes
- Utility roomYes
- CloakroomYes
- EnsuiteYes
- ConservatoryYes
Outside
- Private gardenSouth-facing
- GarageIntegral
Energy performance
33 Firs Walk's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Oct 2007Loft ConversionFullIn report
Loft conversion and porch extension
- Agent
- Dennis Sharp Architects
ExtensionPorch- Documents
- 4 docs on file
- Reference
- 3/07/1812/FP
We flagged 1 thing worth checking at 33 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
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Sales history & valuation
33 Firs Walk has more than quadrupled in price since its earliest registered sale in 1996.
£1,376,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.8% per year over 28 years.
£1,500,000
Growth on file: 5.8% per year over 28 years.
Sales timeline
17 March 2025Most recent
£1,500,000
+177.8%over 24 years2 November 2000
£540,000
+80.0%over 4 years24 September 1996
£300,000
Median price across the last 5 sales in AL6 0NY: £1,250,000 (2023–2017).
Nearby sales in AL6 0NY
Everything we know about 33 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
33 Firs Walk is notably below the street on years held.
Price per m²
£5,882
Street avg £4,528
Floor Area
255 m²
Street avg 239 m²
Habitable Rooms
10 rooms
Street avg 8 rooms
CO₂ Emissions
9.4 t/year
Street avg 8.2 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.