51 Warren Way, Welwyn, AL6 0DL
About 51 Warren Way
51 Warren Way is a four-bedroom detached house in Welwyn (AL6 0DL). It has a recorded floor area of 198 m² (around 2131 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (November 2020) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in July 2011 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Average, window efficiency went from Average to Good and hot-water efficiency went from Average to Good. The recommended improvements would push it to C (score 78).
At 198 m² the property is well over the postcode median (111 m² across 19 EPCs), placing it in the larger end of the local stock. Sold May 2024 for £1,000,000. Across the public record there are 4 sales, relatively high churn for a single property. 5 planning records sit against the property, 5 approved, 0 refused. Past consents include an extension and tree works, meaningful when judging how the property has evolved. Across 2000–2024, sale prices on this property compounded at 6.4% per year. On a £-per-square-foot basis, the last sale (£469/sq ft) was about 44.5% above the typical sold price in the postcode.
Know exactly what you're buying at 51 Warren Way
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
Energy performance
51 Warren Way's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Window efficiency improved
Roof insulation improved
More low energy lighting installed
Planning history
51 Warren Way has been extended on multiple sides of the property across separate planning applications.
- Mar 2016ConditionsIn report
Variation of condition 1 (drawings) and condition 3 (fence details) on planning permission 6/2015/1902/HOUSE
- Reference
- 6/2016/0103/VAR
- Dec 2015ExtensionFullIn report
Erection of a two storey front and side extension, single storey rear extension, installation of raised decking and internal alterations.
- Reference
- 6/2015/1902/HOUSE
We flagged 1 thing worth checking at 51 Warren Way
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
Latest sale on 51 Warren Way was the highest on Land Registry record across the postcode.
£1,035,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.4% per year over 24 years.
£1,000,000
Growth on file: 6.4% per year over 24 years.
Sales timeline
14 May 2024Most recent
£1,000,000
+8.1%over 3 years17 March 2021
£925,000
+62.3%over 5 years4 June 2015
£570,000
+153.3%over 15 years4 April 2000
£225,000
Median price across the last 5 sales in AL6 0DL: £585,000 (2025–2018).
Everything we know about 51 Warren Way, 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
On floor area, 51 Warren Way stands well clear of the street.
Price per m²
£5,051
Street avg £4,012
Floor Area
198 m²
Street avg 123 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
CO₂ Emissions
6.7 t/year
Street avg 5.3 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
0.9 km
St John's CofE Primary School. 13 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.