17 Golwg Y Garn, Penllergaer, Swansea, SA4 9DE
About 17 Golwg Y Garn
17 Golwg Y Garn is a semi-detached house in Penllergaer, Swansea, Swansea (SA4 9DE). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 2012 onwards and council tax band C. The latest certificate (September 2021) shows a C (score 74). The rating has held steady at C across 2 certificates since December 2008. Between certificates, wall efficiency went from Good to Very Good and lighting went from Average to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 87).
Today's modelled estimate of £201,000 sits 57% above the 2015 sale of £128,000. 11 years since the last transfer (April 2015). Across the public record there are 4 sales, relatively high churn for a single property.
Energy performance
EPC Rating
Certificate validity
Valid until 14 September 2031
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation improved
More low energy lighting installed
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Planning history
17 Golwg Y Garn 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
17 Golwg Y Garn saw 4 transfers in just over a decade — high turnover for the postcode.
£201,000
Modelled from EPC, postcode comparables and a sale-price growth of -0.2% per year over 8 years.
£128,000
Growth on file: -0.2% per year over 8 years.
Sales timeline
9 April 2015Most recent
£128,000
-1.5%9 April 2015
£130,000
+8.3%over 5 years21 May 2009
£120,000
-7.7%over 2 years17 January 2007
£129,995
Median price across the last 5 sales in SA4 9DE: £237,000 (2025–2023).
Nearby sales in SA4 9DE
11 Golwg Y Garn, Penllergaer, Swansea, SA4 9DE
Sold Oct 2025
£255,50012 Golwg Y Garn, Penllergaer, Swansea, SA4 9DE
Sold Jun 2025
£183,00016 Golwg Y Garn, Penllergaer, Swansea, SA4 9DE
Sold Dec 2024
£280,0002 Golwg Y Garn, Penllergaer, Swansea, SA4 9DE
Sold Mar 2024
£237,00023 Golwg Y Garn, Penllergaer, Swansea, SA4 9DE
Sold Jan 2023
£205,000
Versus other Golwg Y Garn homes
Floor Area for 17 Golwg Y Garn lags the street by a wide margin.
Price per m²
£1,831
Street avg £2,105
Floor Area
71 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
1.9 t/year
Street avg 2.2 t/year
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The neighbourhood at a glance
Crime
160/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Morgan Close — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







