Golwyg Yr Afon, Llanon, SY23 5HD
About Golwyg Yr Afon
Golwyg Yr Afon is an end-of-terrace house in Llanon (SY23 5HD). It has a recorded floor area of 62 m² (around 667 sq ft) and construction records dating it to before 1900. The latest certificate (June 2023) shows an F (score 25), near the bottom of the EPC scale. The rating has held steady at F across 2 certificates since March 2009. Between certificates, wall efficiency went from Very Poor to Poor; while main heating dropped from Poor to Very Poor. The recommended improvements would lift it to D (score 62), a 2-band jump. Main heating runs on electricity.
Across 2019–2025, sale prices on this property compounded at 7.6% per year. Today's modelled estimate of £131,000 is 18.1% below the 2025 sale of £159,950, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£240/sq ft) was about 326.5% above the typical sold price in the postcode. Most recent transfer was March 2025 at £159,950 — fresh data. At 62 m² it's 23.5% smaller than the typical home in the postcode (81 m² median across 11 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs).
Know exactly what you're buying at Golwyg Yr Afon
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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
Upgraded to gas central heating
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Wall insulation improved
Loft insulation upgraded to recommended levels
Planning history
Golwyg Yr Afon has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Latest sale on Golwyg Yr Afon was the highest on Land Registry record across the postcode.
£131,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.6% per year over 6 years.
£159,950
Growth on file: 7.6% per year over 6 years.
Sales timeline
3 March 2025Most recent
£159,950
+55.3%over 6 years25 February 2019
£103,000
Median price across the last 5 sales in SY23 5HD: £70,000 (2019–2000).
Everything we know about Golwyg Yr Afon, 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 the street
On years held, Golwyg Yr Afon runs well behind the street norm.
Price per m²
£2,580
Street avg £1,331
Floor Area
62 m²
Street avg 95 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
5.8 t/year
Street avg 6.7 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Old Post Office — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.