78 Ynyswen, Penycae, Swansea, SA9 1YX
About 78 Ynyswen
78 Ynyswen is a three-bedroom semi-detached house in Penycae, Swansea, Swansea (SA9 1YX). It has a recorded floor area of 101 m² (around 1085 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (October 2009) shows a C (score 70). Main heating runs on oil. The latest certificate is from October 2009, so improvements made since then won't be reflected.
It hasn't traded since September 2010, a hold of 16 years that's notably long for the area. Today's modelled estimate of £156,000 sits 83.5% above the 2010 sale of £85,000. At 101 m² it's 15.2% larger than the typical home in the postcode (88 m² median across 24 EPCs). Its energy rating outperforms most of the postcode (better than 88% of similar EPCs). One historical planning record sits against the property in 2013.
Know exactly what you're buying at 78 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
What this property has
Inside
- Bedrooms3
Energy performance
78 Ynyswen's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 04 Oct 2019
EPC Rating
Planning history
- Dec 2013OutbuildingFullIn report
Proposed garage to rear elevation built on an existing base and a housing built over an existing oil tank for security.
- Agent
- Roger Boucher
- Documents
- 17 docs on file
- Reference
- 13/10096/FUL
We flagged 1 thing worth checking at 78 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
78 Ynyswen valuation sits well clear of the typical sold price in this postcode.
£156,000
Modelled from EPC, postcode comparables.
£85,000
Recorded with HM Land Registry.
Sales timeline
26 September 2010Most recent
£85,000
Median price across the last 5 sales in SA9 1YX: £102,000 (2021–2016).
Nearby sales in SA9 1YX
Everything we know about 78 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
EPC Rating for 78 Ynyswen runs comfortably ahead of the street norm.
Price per m²
£843
Street avg £910
Floor Area
101 m²
Street avg 92 m²
Habitable Rooms
4 rooms
Street avg 6 rooms
CO₂ Emissions
4.0 t/year
Street avg 5.8 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
Post Office — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.