13 Heol Seion, Llangennech, Llanelli, SA14 8TZ
About 13 Heol Seion
13 Heol Seion is a detached house in Llangennech, Llanelli, Llanelli (SA14 8TZ). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1991-1995 and council tax band C. The latest certificate (August 2017) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 87), a 2-band jump.
Across 2019–2022, sale prices on this property compounded at 32.3% per year. Today's modelled estimate of £200,000 is 20% below the 2022 sale of £249,950, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£363/sq ft) was about 183.5% above the typical sold price in the postcode. Most recent transfer: May 2022 at £249,950. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
13 Heol Seion has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 1 thing worth checking at 13 Heol Seion
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
Latest sale on 13 Heol Seion was the highest on Land Registry record across the postcode.
£200,000
Modelled from EPC, postcode comparables and a sale-price growth of 32.3% per year over 3 years.
£249,950
Growth on file: 32.3% per year over 3 years.
Sales timeline
25 May 2022Most recent
£249,950
+119.3%over 2 years4 August 2019
£114,000
Median price across the last 5 sales in SA14 8TZ: £172,500 (2024–2019).
Nearby sales in SA14 8TZ
16 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold Aug 2024
£180,00026 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold Feb 2023
£195,00024 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold Jan 2023
£145,00015 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold May 2022
£172,5006 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold Feb 2019
£110,000
Versus other Heol Seion homes
On price per m², 13 Heol Seion stands well clear of the street.
Price per m²
£3,905
Street avg £1,846
Floor Area
64 m²
Street avg 63 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.8 t/year
Street avg 2.7 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.







