4 Penygrug, Ystalyfera, Swansea, SA9 2AZ
About 4 Penygrug
4 Penygrug is a three-bedroom semi-detached house in Ystalyfera, Swansea, Swansea (SA9 2AZ). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (August 2021) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in August 2013 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Good, window efficiency went from Average to Good and hot-water efficiency went from Poor to Good. The recommended improvements would push it to C (score 79).
At 91 m² it's 23% larger than the typical home in the postcode (74 m² median across 17 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £145,000 sits 62% above the 2021 sale of £89,500. Last sale on file: £89,500 in October 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 4 Penygrug
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms1
Energy performance
4 Penygrug sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Glazing upgraded to newer, more efficient type
Roof insulation improved
MVHR (mechanical ventilation with heat recovery) installed
Heating controls upgraded for better temperature management
Hot water efficiency improved
Window efficiency improved
Roof insulation improved
Ventilation system changed
Planning history
4 Penygrug has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£145,000
Modelled from EPC, postcode comparables.
£89,500
Recorded with HM Land Registry.
Sales timeline
7 October 2021Most recent
£89,500
Median price across the last 1 sales in SA9 2AZ: £80,000 (2008–2008).
Nearby sales in SA9 2AZ
Everything we know about 4 Penygrug, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Penygrug homes
4 Penygrug is notably below the street on epc rating.
EPC Rating
61 (D)
Street avg 73 (C)
Floor Area
91 m²
Street avg 73 m²
CO₂ Emissions
4.5 t/year
Street avg 2.4 t/year
Habitable Rooms
11 rooms
Street avg 4 rooms
Similar properties nearby
1 Bethel Road, Lower Cwmtwrch
SA9 2PS
1 Brynawel Terrace, Ystradowen
SA9 2YT
1 Caedu Road, Cwmllynfell
SA9 2FQ
1 Cadfan Villas, Swanfield, Ystalyfera
SA9 2JE
1 Dan Y Graig Cottages, Felinfach, Ystradowen
SA9 2XT
1 Crimea Court, Graig Newydd, Godrergraig
SA9 2DT
1 Carreg Yr Afon, Godrergraig
SA9 2DR
1 Cynwal Terrace, Upper Cwmtwrch
SA9 2UP
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Allt-y-Grug — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.