42 Heol Y Garn, Garnswllt, Ammanford, SA18 2RN
About 42 Heol Y Garn
42 Heol Y Garn is a semi-detached house in Garnswllt, Ammanford, Ammanford (SA18 2RN). It has a recorded floor area of 107 m² (around 1152 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (November 2022) shows a C (score 78), near the top of the C band. When first surveyed in May 2009 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Average to Good and window efficiency went from Average to Good. The recommended improvements would push it to B (score 89). Main heating runs on electricity.
At 107 m² it's 16.7% larger than the typical home in the postcode (92 m² median across 16 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Across 2009–2021, sale prices on this property compounded at 4% per year. Today's modelled estimate of £189,000 sits 71.8% above the 2021 sale of £109,995. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Sold April 2021 for £109,995. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 42 Heol Y Garn
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
42 Heol Y Garn ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
Heat pump installed, significantly improving energy efficiency
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Wall insulation improved
Roof insulation improved
Floor insulation added or improved
More low energy lighting installed
Planning history
42 Heol Y Garn has 2 separate extension applications on the council record.
- Jul 2021ExtensionFullIn report
Extension: Two storey · Rear of property
Two storey rear extension
- Documents
- 8 docs on file
- Reference
- 2021/1420/FUL
- Sept 2014ExtensionFullIn report
Extension: Part single, part two storey · Rear of property
Part two storey part first floor rear extension
- Documents
- 9 docs on file
- Reference
- 2014/1008
We flagged 1 thing worth checking at 42 Heol Y Garn
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
30-day money-back guarantee
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£189,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.0% per year over 11 years.
£109,995
Growth on file: 4.0% per year over 11 years.
Sales timeline
15 April 2021Most recent
£109,995
+57.1%over 11 years12 November 2009
£70,000
Median price across the last 5 sales in SA18 2RN: £142,500 (2025–2021).
Nearby sales in SA18 2RN
63 Heol Y Garn, Garnswllt, Ammanford, SA18 2RN
Sold Jun 2025
£136,00032 Heol Y Garn, Garnswllt, Ammanford, SA18 2RN
Sold May 2025
£380,00040 Heol Y Garn, Garnswllt, Ammanford, SA18 2RN
Sold Apr 2024
£343,00065 Heol Y Garn, Garnswllt, Ammanford, SA18 2RN
Sold Jul 2022
£130,00060 Heol Y Garn, Garnswllt, Ammanford, SA18 2RN
Sold Jul 2021
£142,500
Everything we know about 42 Heol Y Garn, 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 Heol Y Garn homes
On epc rating, 42 Heol Y Garn stands well clear of the street.
Price per m²
£1,028
Street avg £1,469
Floor Area
107 m²
Street avg 117 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.2 t/year
Street avg 6.0 t/year
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Dol-y-Garn — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.