18 De Soissons Close, Welwyn Garden City, AL8 6YX
About 18 De Soissons Close
18 De Soissons Close is a three-bedroom semi-detached house in Welwyn Garden City (AL8 6YX). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 2003-2006 and council tax band E. The latest certificate (August 2016) shows a C (score 77), near the top of the C band. The recommended improvements would push it to B (score 90). Records show the property has been extended at some point in its history.
Last sale on file: £550,000 in July 2024. Across the public record there are 4 sales, relatively high churn for a single property. At 76 m² it's 24.6% larger than the typical home in the postcode (61 m² median across 17 EPCs). Across 2004–2024, sale prices on this property compounded at 2.6% per year. On a £-per-square-foot basis, the last sale (£672/sq ft) was about 115.3% above the typical sold price in the postcode.
Know exactly what you're buying at 18 De Soissons Close
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms2
- Dining roomYes
- CloakroomYes
- EnsuiteYes
- StudyYes
Outside
- Private gardenYes
- GarageYes
Building
- Previously extendedYes
Energy performance
EPC Rating
Planning history
18 De Soissons Close has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Latest sale on 18 De Soissons Close was the highest on Land Registry record across the postcode.
£587,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.6% per year over 20 years.
£550,000
Growth on file: 2.6% per year over 20 years.
Sales timeline
23 July 2024Most recent
£550,000
+16.8%over 7 years2 December 2016
£471,000
+54.4%over 11 years4 March 2005
£305,000
-9.0%29 December 2004
£335,000
Median price across the last 5 sales in AL8 6YX: £310,000 (2025–2021).
Nearby sales in AL8 6YX
15 De Soissons Close, Welwyn Garden City, AL8 6YX
Sold Oct 2025
£305,0005 De Soissons Close, Welwyn Garden City, AL8 6YX
Sold Aug 2025
£310,0002 De Soissons Close, Welwyn Garden City, AL8 6YX
Sold Apr 2025
£517,0001 De Soissons Close, Welwyn Garden City, AL8 6YX
Sold Dec 2022
£510,0003 De Soissons Close, Welwyn Garden City, AL8 6YX
Sold Jan 2021
£510,000
Everything we know about 18 De Soissons Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other De Soissons Close homes
Price per m² for 18 De Soissons Close runs comfortably ahead of the street norm.
Price per m²
£7,237
Street avg £4,756
Floor Area
76 m²
Street avg 102 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
2.0 t/year
Street avg 2.7 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Newfields — bus stop.
Closest school
0.4 km
Stanborough School. 12 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.