6 First Avenue, Clase, Swansea, SA6 7LL
About 6 First Avenue
6 First Avenue is a detached house in Clase, Swansea, Swansea (SA6 7LL). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1950-1966 and council tax band A. At 44 m² this is the smallest unit on EPC record across the building (44–99 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (June 2025) shows a C (score 76), near the top of the C band. When first surveyed in September 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Average to Very Good and hot-water efficiency went from Poor to Good.
At 44 m² it sits well below the postcode median (69 m² across 21 EPCs), making it one of the more compact homes locally.
Everything you need to know about 6 First Avenue
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Energy performance
6 First Avenue's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Wall insulation improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
6 First Avenue has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
6 First Avenue has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£124,000
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 SA6 7LL: £100,000 (2023–2018).
Nearby sales in SA6 7LL
19 First Avenue, Clase, Swansea, SA6 7LL
Sold Oct 2023
£205,00016 First Avenue, Clase, Swansea, SA6 7LL
Sold Dec 2022
£100,00018 First Avenue, Clase, Swansea, SA6 7LL
Sold Jun 2019
£88,00020 First Avenue, Clase, Swansea, SA6 7LL
Sold Jun 2017
£70,00010 First Avenue, Clase, Swansea, SA6 7LL
Sold Dec 2008
£45,000
Versus other First Avenue homes
On floor area, 6 First Avenue runs well behind the street norm.
EPC Rating
76 (C)
Street avg 67 (D)
Floor Area
44 m²
Street avg 53 m²
CO₂ Emissions
1.3 t/year
Street avg 2.3 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Everything you need to know about 6 First Avenue
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pengwern Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.