89 Ynyswen, Penycae, Swansea, SA9 1YX
About 89 Ynyswen
89 Ynyswen is a semi-detached house in Penycae, Swansea, Swansea (SA9 1YX). 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 2015) shows a D (score 56), a step below the typical UK home. The recommended improvements would push it to C (score 80). Main heating runs on oil. The latest certificate is from November 2015, so improvements made since then won't be reflected.
Across 2002–2016, sale prices on this property compounded at 2.9% per year. Today's modelled estimate of £149,000 sits 198% above the 2016 sale of £50,000. On a £-per-square-foot basis, the last sale (£53/sq ft) was about 25.8% below the postcode norm. 10 years since the last transfer (March 2016).
Know exactly what you're buying at 89 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
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 06 Nov 2025
EPC Rating
Planning history
89 Ynyswen has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 89 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
89 Ynyswen's modelled value sits at over four times its earliest registered sale price (2002).
£149,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 14 years.
£50,000
Growth on file: 2.9% per year over 14 years.
Sales timeline
23 March 2016Most recent
£50,000
-47.4%over 9 years20 December 2006
£95,000
+183.6%over 4 years4 April 2002
£33,500
Median price across the last 5 sales in SA9 1YX: £105,000 (2021–2014).
Nearby sales in SA9 1YX
Everything we know about 89 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 habitable rooms, 89 Ynyswen runs well behind the street norm.
Price per m²
£575
Street avg £933
Floor Area
87 m²
Street avg 93 m²
Habitable Rooms
4 rooms
Street avg 6 rooms
CO₂ Emissions
5.6 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.