12 Heol Seion, Llangennech, Llanelli, SA14 8TZ
About 12 Heol Seion
12 Heol Seion is a two-bedroom semi-detached house in Llangennech, Llanelli, Llanelli (SA14 8TZ). It has a recorded floor area of 63 m² (around 678 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (December 2012) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 82), a 2-band jump. The latest certificate is from December 2012, so improvements made since then won't be reflected.
Across 2001–2014, sale prices on this property compounded at 6.1% per year. Today's modelled estimate of £166,000 sits 95.3% above the 2014 sale of £85,000. Last sold in May 2014, so it's been off the market for around 12 years.
What this property has
Inside
- Bedrooms2
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 03 Dec 2022
EPC Rating
Planning history
12 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 12 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
12 Heol Seion has more than doubled in price since the earliest registered sale in 2001.
£166,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 13 years.
£85,000
Growth on file: 6.1% per year over 13 years.
Sales timeline
27 May 2014Most recent
£85,000
+0.6%over 10 years1 April 2004
£84,500
+116.7%over 3 years20 February 2001
£39,000
Median price across the last 5 sales in SA14 8TZ: £180,000 (2024–2022).
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
£145,00013 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold May 2022
£249,95015 Heol Seion, Llangennech, Llanelli, SA14 8TZ
Sold May 2022
£172,500
Versus other Heol Seion homes
Price per m² for 12 Heol Seion lags the street by a wide margin.
Price per m²
£1,349
Street avg £2,042
Floor Area
63 m²
Street avg 63 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.5 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.







