15 Heol Plas Isaf, Llangennech, Llanelli, SA14 8TJ
About 15 Heol Plas Isaf
15 Heol Plas Isaf is a semi-detached house in Llangennech, Llanelli, Llanelli (SA14 8TJ). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (August 2022) returns an A (score 96), the top energy band on the EPC scale. When first surveyed in June 2015 the rating was D, the property has climbed 3 bands since. Between certificates, window efficiency went from Average to Good and lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average.
On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £179,000 sits 92.5% above the 2016 sale of £93,000. Last changed hands 10 years ago, in February 2016.
Energy performance
15 Heol Plas Isaf ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
More low energy lighting installed
Solar PV panels (50 kWp) installed
Planning history
15 Heol Plas Isaf has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 1 thing worth checking at 15 Heol Plas Isaf
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
15 Heol Plas Isaf valuation sits well clear of the typical sold price in this postcode.
£179,000
Modelled from EPC, postcode comparables.
£93,000
Recorded with HM Land Registry.
Sales timeline
16 February 2016Most recent
£93,000
Median price across the last 5 sales in SA14 8TJ: £155,000 (2024–2020).
Nearby sales in SA14 8TJ
12 Heol Plas Isaf, Llangennech, Llanelli, SA14 8TJ
Sold Aug 2024
£175,00011 Heol Plas Isaf, Llangennech, Llanelli, SA14 8TJ
Sold Nov 2023
£172,00010 Heol Plas Isaf, Llangennech, Llanelli, SA14 8TJ
Sold May 2022
£143,00013 Heol Plas Isaf, Llangennech, Llanelli, SA14 8TJ
Sold Dec 2021
£155,0005 Heol Plas Isaf, Llangennech, Llanelli, SA14 8TJ
Sold Dec 2020
£124,400
Versus other Heol Plas Isaf homes
On price per m², 15 Heol Plas Isaf runs well behind the street norm.
Price per m²
£1,453
Street avg £1,987
Floor Area
64 m²
Street avg 67 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
0.4 t/year
Street avg 3.0 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Heol Plas Isaf — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.







