37 Derwen Fawr, Llandybie, Ammanford, SA18 2UY
About 37 Derwen Fawr
37 Derwen Fawr is a detached house in Llandybie, Ammanford, Ammanford (SA18 2UY). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (October 2018) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would lift it to A (score 108), a 4-band jump.
At 72 m² it's 16.1% smaller than the typical home in the postcode (86 m² median across 17 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £224,000 sits 66.3% above the 2019 sale of £134,700. On a £-per-square-foot basis, the last sale (£174/sq ft) was about 18% above the typical sold price in the postcode. Last sale on file: £134,700 in January 2019.
Know exactly what you're buying at 37 Derwen Fawr
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
37 Derwen Fawr sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Planning history
37 Derwen Fawr has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 37 Derwen Fawr
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
37 Derwen Fawr valuation sits well clear of the typical sold price in this postcode.
£224,000
Modelled from EPC, postcode comparables.
£134,700
Recorded with HM Land Registry.
Sales timeline
24 January 2019Most recent
£134,700
Median price across the last 5 sales in SA18 2UY: £206,000 (2024–2019).
Nearby sales in SA18 2UY
36 Derwen Fawr, Llandybie, Ammanford, SA18 2UY
Sold Nov 2024
£238,00010 Derwen Fawr, Llandybie, Ammanford, SA18 2UY
Sold Nov 2023
£205,0009 Derwen Fawr, Llandybie, Ammanford, SA18 2UY
Sold Aug 2023
£250,00017 Derwen Fawr, Llandybie, Ammanford, SA18 2UY
Sold Mar 2021
£206,00035 Derwen Fawr, Llandybie, Ammanford, SA18 2UY
Sold May 2019
£150,000
Everything we know about 37 Derwen Fawr, 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 Derwen Fawr homes
On epc rating, 37 Derwen Fawr runs well behind the street norm.
Price per m²
£1,871
Street avg £1,907
Floor Area
72 m²
Street avg 95 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
4.5 t/year
Street avg 4.1 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Glynhir Road — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.