4 Carreg Y Dwfn, Llandyfan, Ammanford, SA18 2UB
About 4 Carreg Y Dwfn
4 Carreg Y Dwfn is a detached house in Llandyfan, Ammanford, Ammanford (SA18 2UB). It has a recorded floor area of 126 m² (around 1356 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (November 2019) shows an E (score 46), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since August 2019. Between certificates, wall efficiency went from Very Poor to Poor and hot-water efficiency went from Poor to Average. The recommended improvements would lift it to B (score 87), a 3-band jump. Main heating runs on bulk wood pellets.
Held since June 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1997–2007, sale prices on this property compounded at 21.6% per year. Today's modelled estimate of £422,000 is 45.5% above the 2007 sale price.
Know exactly what you're buying at 4 Carreg Y Dwfn
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
4 Carreg Y Dwfn's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Changed to a more efficient fuel source
Hot water system upgraded
Wall insulation improved
Solar water heating installed
Planning history
4 Carreg Y Dwfn has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 4 Carreg Y Dwfn
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
Price for 4 Carreg Y Dwfn has grown more than fourfold since the 1997 starting point.
£422,000
Modelled from EPC, postcode comparables and a sale-price growth of 21.6% per year over 10 years.
£289,950
Growth on file: 21.6% per year over 10 years.
Sales timeline
7 June 2007Most recent
£289,950
+222.3%over 6 years1 August 2000
£89,950
+114.2%over 3 years17 July 1997
£42,000
Median price across the last 5 sales in SA18 2UB: £185,000 (2024–2011).
Nearby sales in SA18 2UB
1 Carreg Y Dwfn, Llandyfan, Ammanford, SA18 2UB
Sold Jul 2024
£452,500Glanquay, Llandyfan, Ammanford, SA18 2UB
Sold Sept 2021
£405,000Lletty Forge, Llandyfan, Ammanford, SA18 2UB
Sold Sept 2019
£154,000Lletty Forge Barn, Llandyfan, Ammanford, SA18 2UB
Sold Aug 2019
£86,500Forge Mill, Llandyfan, Ammanford, SA18 2UB
Sold Jun 2011
£185,000
Everything we know about 4 Carreg Y Dwfn, 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 the street
Floor Area for 4 Carreg Y Dwfn lags the street by a wide margin.
EPC Rating
46 (E)
Street avg 18 (G)
Floor Area
126 m²
Street avg 149 m²
CO₂ Emissions
1.3 t/year
Street avg 11.8 t/year
Habitable Rooms
7 rooms
Street avg 6 rooms
Similar properties nearby
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.7 km
Art & Craft Centre — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.