27 Firs Walk, Tewin, Welwyn, AL6 0NY
About 27 Firs Walk
27 Firs Walk is a five-bedroom detached house in Tewin, Welwyn, Welwyn (AL6 0NY). It has a recorded floor area of 172 m² (around 1854 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (May 2010) shows an E (score 44), well below the UK norm with real room to improve. The latest certificate is from May 2010, so improvements made since then won't be reflected.
At 172 m² it's 26.7% smaller than the typical home in the postcode (235 m² median across 14 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs). Across 1997–2012, sale prices on this property compounded at 7.5% per year. Today's modelled estimate of £1,241,000 is 33.4% above the 2012 sale price. On a £-per-square-foot basis, the last sale (£502/sq ft) was about 57.2% above the typical sold price in the postcode. Last changed hands 14 years ago, in September 2012.
Know exactly what you're buying at 27 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
Energy performance
27 Firs Walk's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 24 May 2020
EPC Rating
Planning history
27 Firs Walk has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 27 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
Sale price has at least doubled since 1997.
£1,241,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.5% per year over 15 years.
£930,000
Growth on file: 7.5% per year over 15 years.
Sales timeline
5 September 2012Most recent
£930,000
+195.2%over 15 years20 August 1997
£315,000
Median price across the last 5 sales in AL6 0NY: £1,300,000 (2025–2020).
Nearby sales in AL6 0NY
Everything we know about 27 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
27 Firs Walk is notably below the street on floor area.
Price per m²
£5,400
Street avg £4,569
Floor Area
172 m²
Street avg 245 m²
Habitable Rooms
8 rooms
Street avg 8 rooms
CO₂ Emissions
11.0 t/year
Street avg 8.0 t/year
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1 Cob Lane Close, Digswell
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1 Churchfield Road, Tewin
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1 Chestnut Walk
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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.