15 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
About 15 Dol Y Dderwen
15 Dol Y Dderwen is a detached house in Llangain, Carmarthen, Carmarthen (SA33 5BE). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 2023 and council tax band E. The latest certificate (February 2025) returns a B (score 81), comfortably above the UK average. When first surveyed in June 2015 the rating was F, the property has climbed 4 bands since. Between certificates, wall efficiency went from Good to Very Good, roof efficiency went from Good to Very Good and window efficiency went from Average to Good. The recommended improvements would push it to A (score 92). Main heating runs on electricity: electricity, unspecified tariff.
Across 1997–2016, sale prices on this property compounded at 5.2% per year. Today's modelled estimate of £260,000 is 40.5% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£220/sq ft) was about 40.9% above the typical sold price in the postcode. 10 years since the last transfer (January 2016).
Know exactly what you're buying at 15 Dol Y Dderwen
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
Energy performance
15 Dol Y Dderwen's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Fuel source changed
Hot water efficiency improved
More low energy lighting installed
Heat pump installed, significantly improving energy efficiency
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Roof insulation improved
Low energy lighting percentage decreased
Mechanical ventilation installed
Heating controls changed
Hot water efficiency improved
High performance glazing installed
Wall insulation improved
Loft insulation upgraded to recommended levels
Floor insulation added or improved
More low energy lighting installed
Planning history
15 Dol Y Dderwen has no planning applications on record.
Notable planning nearby
4applications of note in the surrounding area
We flagged 1 thing worth checking at 15 Dol Y Dderwen
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
Sale price has at least doubled since 1997.
£260,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.2% per year over 18 years.
£185,000
Growth on file: 5.2% per year over 18 years.
Sales timeline
20 January 2016Most recent
£185,000
+132.7%over 15 years13 April 2000
£79,500
+8.9%over 2 years28 August 1997
£73,000
Median price across the last 5 sales in SA33 5BE: £270,000 (2025–2022).
Nearby sales in SA33 5BE
25 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Feb 2025
£240,00017 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Sept 2024
£330,00053 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Jul 2023
£327,0008 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Feb 2023
£250,00043 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Oct 2022
£345,000
Everything we know about 15 Dol Y Dderwen, 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 Dol Y Dderwen homes
On floor area, 15 Dol Y Dderwen runs well behind the street norm.
Price per m²
£2,372
Street avg £1,993
Floor Area
78 m²
Street avg 96 m²
CO₂ Emissions
0.4 t/year
Street avg 1.8 t/year
Years Held
10 years
Street avg 12 years
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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
Capel Smyrna — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.