12b, Hertford Road, Tewin, Welwyn, AL6 0JY
About 12b
12b is a detached house in Tewin, Welwyn, Welwyn (AL6 0JY). It has a recorded floor area of 162 m² (around 1744 sq ft). The latest certificate (February 2019) returns a B (score 84), comfortably above the UK average. The rating has held steady at B across 2 certificates since February 2019.
Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). On a £-per-square-foot basis, the last sale (£513/sq ft) was about 25.7% above the typical sold price in the postcode. Last sale on file: £895,000 in February 2019.
Know exactly what you're buying at 12b
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
Energy performance
EPC Rating
Planning history
12b has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 12b
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
12b valuation sits well clear of the typical sold price in this postcode.
£979,000
Modelled from EPC, postcode comparables.
£895,000
Recorded with HM Land Registry.
Sales timeline
28 February 2019Most recent
£895,000
Median price across the last 5 sales in AL6 0JY: £755,000 (2021–2015).
Nearby sales in AL6 0JY
4 Hertford Road, Tewin, Welwyn, AL6 0JY
Sold Jun 2021
£516,00012a, Hertford Road, Tewin, Welwyn, AL6 0JY
Sold Mar 2019
£875,00020 Hertford Road, Tewin, Welwyn, AL6 0JY
Sold May 2016
£750,00022a, Hertford Road, Tewin, Welwyn, AL6 0JY
Sold Jun 2015
£755,0002a, Hertford Road, Tewin, Welwyn, AL6 0JY
Sold May 2015
£765,000
Everything we know about 12b, 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 Hertford Road homes
12b outperforms the street on co₂ emissions by a wide margin.
Price per m²
£5,525
Street avg £4,947
Floor Area
162 m²
Street avg 156 m²
CO₂ Emissions
2.2 t/year
Street avg 6.0 t/year
Years Held
7 years
Street avg 12 years
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Rose and Crown PH — bus stop.
Closest school
0.1 km
Tewin Cowper Church of England Voluntary Aided Primary School. 8 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.