3 Heol Y Deri, Cwmgwili, Llanelli, SA14 6PH
About 3 Heol Y Deri
3 Heol Y Deri is a semi-detached house in Cwmgwili, Llanelli, Llanelli (SA14 6PH). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (November 2024) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 80). Main heating runs on oil.
Untraded for 28 years, with the last transfer in December 1998. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £180,000 sits 414.3% above the 1998 sale of £35,000. On a £-per-square-foot basis, the last sale (£38/sq ft) was about 59.2% below the postcode norm. 2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 89% of similar EPCs).
Energy performance
EPC Rating
Planning history
3 Heol Y Deri has 2 separate extension applications on the council record.
- Sept 2009ExtensionFullIn report
Extension: Single storey · Front of property
SINGLE STOREY EXTENSION IN FRONT OF DWELLING (RESUBMISSION OF E/21153 REFUSED 09.07.2009)
- Documents
- 5 docs on file
- Reference
- E/21495
- Jul 2009ExtensionFullIn report
Extension: Two storey · Front of property
DOUBLE STOREY EXTENSION TO FRONT OF HOUSE
- Documents
- 5 docs on file
- Reference
- E/21153
We flagged 1 thing worth checking at 3 Heol Y Deri
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
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Sales history & valuation
3 Heol Y Deri's modelled value sits at over four times its earliest registered sale price (1998).
£180,000
Modelled from EPC, postcode comparables.
£35,000
Recorded with HM Land Registry.
Sales timeline
4 December 1998Most recent
£35,000
Median price across the last 5 sales in SA14 6PH: £180,000 (2025–2023).
Nearby sales in SA14 6PH
5 Heol Y Deri, Cwmgwili, Llanelli, SA14 6PH
Sold Nov 2025
£210,0009 Heol Y Deri, Cwmgwili, Llanelli, SA14 6PH
Sold Feb 2025
£180,000Aely Bryn, Heol Y Deri, Cwmgwili, Llanelli, SA14 6PH
Sold Mar 2024
£137,000Maes Y Gelli, Heol Y Deri, Cwmgwili, Llanelli, SA14 6PH
Sold Nov 2023
£200,0001 Heol Y Deri, Cwmgwili, Llanelli, SA14 6PH
Sold Oct 2023
£170,000
Versus other Heol Y Deri homes
Years Held for 3 Heol Y Deri runs comfortably ahead of the street norm.
Price per m²
£412
Street avg £1,432
Floor Area
85 m²
Street avg 85 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.3 t/year
Street avg 6.2 t/year
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Cwmgwili Playground — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.







