17 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
About 17 Clos Ty Mawr
17 Clos Ty Mawr is a detached house in Penllergaer, Swansea, Swansea (SA4 9DA). It has a recorded floor area of 189 m² (around 2034 sq ft), construction records dating it to 1983-1990 and council tax band F. The latest certificate (July 2019) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 82).
At 189 m² the property is well over the postcode median (143 m² across 7 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). One planning record on file: an extension approved in 2025. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £504,000 is 38.1% above the 2020 sale price. Last sale on file: £365,000 in January 2020.
Energy performance
EPC Rating
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Planning history
Council records include a part-single-part-two-storey side and rear extension at 17 Clos Ty Mawr.
1 application on record at 17 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
- Jan 2025ExtensionFullOutcome in report
Extension: Part single, part two storey · Side and rear of property
Two storey side extension and part single part two storey rear extension
- Documents
- 18 docs on file
- Reference
- 2024/1544/FUL
Unlock 17 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 1 notable nearby
- The 18 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£504,000
Modelled from EPC, postcode comparables.
£365,000
Recorded with HM Land Registry.
Sales timeline
31 January 2020Most recent
£365,000
Median price across the last 5 sales in SA4 9DA: £255,000 (2023–2008).
Nearby sales in SA4 9DA
13 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
Sold Oct 2023
£420,0008 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
Sold Apr 2019
£350,0007 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
Sold Aug 2018
£255,0003 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
Sold Mar 2014
£246,0006 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA
Sold May 2008
£220,000
Versus other Clos Ty Mawr homes
17 Clos Ty Mawr outperforms the street on floor area by a wide margin.
Price per m²
£1,931
Street avg £1,885
Floor Area
189 m²
Street avg 143 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
5.9 t/year
Street avg 5.7 t/year
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
Parc Penllergaer — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







