11 Llys Mieri, Penllergaer, Swansea, SA4 9DL
About 11 Llys Mieri
11 Llys Mieri is a four-bedroom mid-terrace house in Penllergaer, Swansea, Swansea (SA4 9DL). It has a recorded floor area of 115 m² (around 1238 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (June 2025) 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 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 90).
Held since May 2011 — that's 15 years off the open market, well above the local norm. At 115 m² the property is well over the postcode median (75 m² across 13 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £246,000 sits 53.8% above the 2011 sale of £159,995. On a £-per-square-foot basis, the last sale (£129/sq ft) was about 25% below the postcode norm.
What this property has
Inside
- Bedrooms4
- Bathrooms2
- EnsuiteYes
Outside
- GarageYes
Energy performance
EPC Rating
Certificate validity
Valid until 5 June 2035
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation upgraded
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Level 2 HomeBuyer Report
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Planning history
11 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
11 Llys Mieri valuation sits well clear of the typical sold price in this postcode.
£246,000
Modelled from EPC, postcode comparables.
£159,995
Recorded with HM Land Registry.
Sales timeline
19 May 2011Most recent
£159,995
Median price across the last 5 sales in SA4 9DL: £209,000 (2025–2017).
Nearby sales in SA4 9DL
5 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Dec 2025
£165,0007 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Aug 2025
£215,0009 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Feb 2024
£209,00014 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Aug 2017
£231,0001 Llys Mieri, Penllergaer, Swansea, SA4 9DL
Sold Dec 2015
£170,000
Versus other Llys Mieri homes
Price per m² for 11 Llys Mieri lags the street by a wide margin.
Price per m²
£1,391
Street avg £2,012
Floor Area
115 m²
Street avg 87 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
2.6 t/year
Street avg 1.8 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
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.







