1 Nant Yr Ynys, Llanpumsaint, Carmarthen, SA33 6LJ
About 1 Nant Yr Ynys
1 Nant Yr Ynys is a three-bedroom detached house in Llanpumsaint, Carmarthen, Carmarthen (SA33 6LJ). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (March 2019) shows an E (score 49), well below the UK norm with real room to improve. When first surveyed in October 2011 the rating was F, the property has climbed 1 band since. Between certificates, wall efficiency went from Average to Good, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good. The recommended improvements would push it to D (score 68). Main heating runs on lpg.
At 98 m² it's 19% smaller than the typical home in the postcode (121 m² median across 20 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2007–2022, sale prices on this property compounded at 2.2% per year. Today's modelled estimate of £267,000 is 20% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£211/sq ft) was about 41.7% above the typical sold price in the postcode. Last sale on file: £222,500 in May 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 1 Nant Yr Ynys
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
What this property has
Inside
- Bedrooms3
- Utility roomYes
- EnsuiteYes
Outside
- Private gardenYes
- Garageintegral
Building
- Heating systemgas
Energy performance
1 Nant Yr Ynys 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 controls upgraded for better temperature management
Hot water system upgraded
Wall insulation improved
More low energy lighting installed
Planning history
1 Nant Yr Ynys has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 1 Nant Yr Ynys
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.
£267,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.2% per year over 15 years.
£222,500
Growth on file: 2.2% per year over 15 years.
Sales timeline
11 May 2022Most recent
£222,500
+39.1%over 15 years22 February 2007
£160,000
Median price across the last 5 sales in SA33 6LJ: £280,000 (2024–2019).
Nearby sales in SA33 6LJ
4 Nant Yr Ynys, Llanpumsaint, Carmarthen, SA33 6LJ
Sold Feb 2024
£259,9958 Nant Yr Ynys, Llanpumsaint, Carmarthen, SA33 6LJ
Sold Jul 2023
£280,00011 Nant Yr Ynys, Llanpumsaint, Carmarthen, SA33 6LJ
Sold Dec 2022
£450,00014 Nant Yr Ynys, Llanpumsaint, Carmarthen, SA33 6LJ
Sold Mar 2019
£248,00022 Nant Yr Ynys, Llanpumsaint, Carmarthen, SA33 6LJ
Sold Dec 2018
£280,000
Everything we know about 1 Nant Yr Ynys, 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 Nant Yr Ynys homes
EPC Rating for 1 Nant Yr Ynys lags the street by a wide margin.
Price per m²
£2,270
Street avg £1,653
Floor Area
98 m²
Street avg 122 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.7 t/year
Street avg 4.9 t/year
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1 Bro Celynin, Bronwydd Arms
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1 Blaenbryn, Blaenycoed
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The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Railway Inn — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.