10 Heol Isfoel, Llanrhystud, SY23 5BJ
About 10 Heol Isfoel
10 Heol Isfoel is a detached house in Llanrhystud (SY23 5BJ). It has a recorded floor area of 94 m² (around 1012 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (September 2021) shows an F (score 25), near the bottom of the EPC scale. Earlier certificates rated it C (April 2009); the latest reading is 3 bands lower. Between certificates, window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to E (score 47). Main heating runs on electricity.
Untraded for 15 years, with the last transfer in January 2011. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2000–2011, sale prices on this property compounded at 21% per year. Today's modelled estimate of £268,000 is 41.1% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£188/sq ft) was about 30% above the typical sold price in the postcode.
Know exactly what you're buying at 10 Heol Isfoel
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
10 Heol Isfoel sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Planning history
10 Heol Isfoel has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
10 Heol Isfoel has more than quadrupled in price since its earliest registered sale in 2000.
£268,000
Modelled from EPC, postcode comparables and a sale-price growth of 21.0% per year over 11 years.
£190,000
Growth on file: 21.0% per year over 11 years.
Sales timeline
7 January 2011Most recent
£190,000
+660.0%over 10 years11 May 2000
£25,000
Median price across the last 5 sales in SY23 5BJ: £122,500 (2025–2022).
Nearby sales in SY23 5BJ
Everything we know about 10 Heol Isfoel, 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 Heol Isfoel homes
EPC Rating for 10 Heol Isfoel lags the street by a wide margin.
Price per m²
£2,021
Street avg £1,757
Floor Area
94 m²
Street avg 97 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
7.3 t/year
Street avg 4.2 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Heol Islwyn — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.