20 Chestnut Avenue, Gorseinon, Swansea, SA4 4YP
About 20 Chestnut Avenue
20 Chestnut Avenue is a semi-detached house in Gorseinon, Swansea, Swansea (SA4 4YP). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1950-1966 and council tax band A. At 80 m² this is the 13th smallest of 20 units on EPC record in the building, where floor areas span 33–93 m². The building's EPC ratings span E to C across 20 units on file. The latest certificate (July 2021) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). Main heating runs on house coal.
At 80 m² it's 23.1% larger than the typical home in the postcode (65 m² median across 19 EPCs).
Energy performance
20 Chestnut Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
20 Chestnut Avenue has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
20 Chestnut Avenue has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£112,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SA4 4YP: £63,000 (2025–2006).
Nearby sales in SA4 4YP
10 Chestnut Avenue, Gorseinon, Swansea, SA4 4YP
Sold Jul 2025
£190,00026 Chestnut Avenue, Gorseinon, Swansea, SA4 4YP
Sold May 2007
£104,43012 Chestnut Avenue, Gorseinon, Swansea, SA4 4YP
Sold Dec 2006
£63,00028 Chestnut Avenue, Gorseinon, Swansea, SA4 4YP
Sold Nov 2000
£34,9954 Chestnut Avenue, Gorseinon, Swansea, SA4 4YP
Sold Apr 2000
£32,100
Versus other Chestnut Avenue homes
EPC Rating for 20 Chestnut Avenue lags the street by a wide margin.
EPC Rating
60 (D)
Street avg 69 (D)
Floor Area
80 m²
Street avg 61 m²
CO₂ Emissions
7.2 t/year
Street avg 2.3 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Similar properties nearby
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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
Chestnut Avenue — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







