1a, Warren Way, Welwyn, AL6 0DQ
About 1a
1a is a four-bedroom detached house in Welwyn (AL6 0DQ). It has a recorded floor area of 154 m² (around 1658 sq ft), construction records dating it to 1976-1982 and council tax band F. The latest certificate (June 2018) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 80). Other recorded features include a conservatory.
Across 2001–2020, sale prices on this property compounded at 5.3% per year. Today's modelled estimate of £815,000 is 24.4% above the 2020 sale price. Sold March 2020 for £655,000. One historical planning record sits against the property in 2002.
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
- ConservatoryYes
Outside
- Private gardenRear
- GarageYes
Building
- RefurbishedYes
Energy performance
1a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Mar 2002
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.
£815,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.3% per year over 19 years.
£655,000
Growth on file: 5.3% per year over 19 years.
Sales timeline
30 March 2020Most recent
£655,000
+163.1%over 18 years4 September 2001
£249,000
Median price across the last 5 sales in AL6 0DQ: £850,000 (2025–2018).
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 Warren Way homes
Price per m²
£4,253
Street avg £5,397
Floor Area
154 m²
Street avg 154 m²
Habitable Rooms
5 rooms
Street avg 7 rooms
CO₂ Emissions
6.1 t/year
Street avg 6.4 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Welwyn North Rail Station — railway station.
Closest school
0.8 km
St John's CofE Primary School. 12 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.