1 Byfield, Welwyn Garden City, AL8 7AL
About 1 Byfield
1 Byfield is a one-bedroom mid-terrace house in Welwyn Garden City (AL8 7AL). It has a recorded floor area of 113 m² (around 1216 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (July 2023) shows a C (score 75), near the top of the C band. When first surveyed in June 2011 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Average and lighting went from Very Poor to Very Good; while roof efficiency dropped from Good to Average. The recommended improvements would push it to B (score 85).
2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. At 113 m² it's 29.9% larger than the typical home in the postcode (87 m² median across 20 EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Across 2002–2020, sale prices on this property compounded at 7.6% per year. Today's modelled estimate of £478,000 is 21.9% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£322/sq ft) was about 18.2% above the typical sold price in the postcode. Sold June 2020 for £392,000.
Know exactly what you're buying at 1 Byfield
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
- Bedrooms1
- Bathrooms1
Outside
- Private gardenYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Cavity wall insulation installed
More low energy lighting installed
Planning history
A recent planning application at 1 Byfield was refused — worth checking the council file.
- Feb 2022ApplicationIn report
Installation of a hardstanding to front
- Reference
- 6/2022/0051/EM
- Nov 2016PorchOutlineIn report
Extension: Rear of property
Certificate of lawfulness for the erection of single storey rear extension and front porch
Extension- Reference
- 6/2016/1915/LAWP
We flagged 1 thing worth checking at 1 Byfield
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.
- A planning decision worth checking
30-day money-back guarantee
Sales history & valuation
Sale price has grown by over 3x since 2002.
£478,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.6% per year over 18 years.
£392,000
Growth on file: 7.6% per year over 18 years.
Sales timeline
11 June 2020Most recent
£392,000
+80.6%over 8 years27 October 2011
£217,000
+112.7%over 9 years1 February 2002
£102,000
Median price across the last 5 sales in AL8 7AL: £387,500 (2025–2022).
Nearby sales in AL8 7AL
Everything we know about 1 Byfield, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- A planning decision worth checking

Versus other Byfield homes
On floor area, 1 Byfield stands well clear of the street.
Price per m²
£3,469
Street avg £3,932
Floor Area
113 m²
Street avg 86 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.1 t/year
Street avg 3.5 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Sewells — bus stop.
Closest school
0.2 km
Harwood Hill Junior Mixed Infant and Nursery School. 19 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.