24 Ynyswen, Penycae, Swansea, SA9 1YS
About 24 Ynyswen
24 Ynyswen is a semi-detached house in Penycae, Swansea, Swansea (SA9 1YS). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (November 2023) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (March 2013); the latest reading is one band lower. Between certificates, wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 82), a 3-band jump. Main heating runs on oil.
It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs). Today's modelled estimate of £158,000 is 43.6% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£117/sq ft) was about 36.8% above the typical sold price in the postcode. Sold June 2024 for £110,000.
Know exactly what you're buying at 24 Ynyswen
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
Roof insulation improved
More low energy lighting installed
Planning history
24 Ynyswen has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 24 Ynyswen
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
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Sales history & valuation
24 Ynyswen valuation sits well clear of the typical sold price in this postcode.
£158,000
Modelled from EPC, postcode comparables.
£110,000
Recorded with HM Land Registry.
Sales timeline
6 June 2024Most recent
£110,000
Median price across the last 5 sales in SA9 1YS: £153,000 (2025–2022).
Nearby sales in SA9 1YS
Everything we know about 24 Ynyswen, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Ynyswen homes
On co₂ emissions, 24 Ynyswen runs well behind the street norm.
Price per m²
£1,264
Street avg £1,094
Floor Area
87 m²
Street avg 90 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.9 t/year
Street avg 5.2 t/year
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Ynyswen — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.