9 Llys Mieri, Penllergaer, Swansea, SA4 9DL
About 9 Llys Mieri
9 Llys Mieri is an end-of-terrace house in Penllergaer, Swansea, Swansea (SA4 9DL). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (August 2023) shows a C (score 77), near the top of the C band. Earlier certificates rated it B (March 2011); the latest reading is one band lower. Between certificates, roof 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 91).
Across 2011–2024, sale prices on this property compounded at 3.9% per year. On a £-per-square-foot basis, the last sale (£270/sq ft) was about 58% above the typical sold price in the postcode. At 72 m² it's 19.9% smaller than the typical home in the postcode (90 m² median across 13 EPCs). Sold February 2024 for £209,000.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation upgraded
Roof insulation improved
More low energy lighting installed
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Planning history
9 Llys Mieri 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
9 Llys Mieri valuation sits well clear of the typical sold price in this postcode.
£215,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.9% per year over 13 years.
£209,000
Growth on file: 3.9% per year over 13 years.
Sales timeline
9 February 2024Most recent
£209,000
+61.6%over 12 years4 August 2011
£129,295
Median price across the last 5 sales in SA4 9DL: £170,000 (2025–2015).
Nearby sales in SA4 9DL
7 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Aug 2025
£215,00014 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Aug 2017
£231,0005 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold May 2016
£126,0001 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Dec 2015
£170,0008 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Mar 2015
£115,000
Versus other Llys Mieri homes
EPC Rating for 9 Llys Mieri lags the street by a wide margin.
Price per m²
£2,903
Street avg £1,845
Floor Area
72 m²
Street avg 91 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
1.8 t/year
Street avg 1.9 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Tircoed Turn — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







