50 Derwydd Avenue, Gwaun Cae Gurwen, Ammanford, SA18 1PH
About 50 Derwydd Avenue
50 Derwydd Avenue is a two-bedroom semi-detached house in Gwaun Cae Gurwen, Ammanford, Ammanford (SA18 1PH). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (February 2023) returns a B (score 83), comfortably above the UK average. When first surveyed in October 2011 the rating was D, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Average to Good and lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average and roof efficiency dropped from Very Good to Good.
On energy efficiency it sits in the top 10% of properties in this postcode. Across 2004–2019, sale prices on this property compounded at 8% per year. Today's modelled estimate of £120,000 sits 50% above the 2019 sale of £80,000. On a £-per-square-foot basis, the last sale (£97/sq ft) was about 73.8% above the typical sold price in the postcode. Last sale on file: £80,000 in June 2019.
Know exactly what you're buying at 50 Derwydd Avenue
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
What this property has
Inside
- Bedrooms2
Outside
- Private gardenfront_and_rear
Building
- Heating systemgas
Energy performance
50 Derwydd Avenue ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
More low energy lighting installed
Solar PV panels (40 kWp) installed
Planning history
50 Derwydd Avenue has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 50 Derwydd Avenue
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
50 Derwydd Avenue has more than tripled in price since its earliest registered sale in 2004.
£120,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.0% per year over 15 years.
£80,000
Growth on file: 8.0% per year over 15 years.
Sales timeline
27 June 2019Most recent
£80,000
+27.0%over 6 years16 November 2012
£63,000
+149.6%over 8 years25 July 2004
£25,245
Median price across the last 5 sales in SA18 1PH: £63,500 (2015–2000).
Nearby sales in SA18 1PH
13 Derwydd Avenue, Gwaun Cae Gurwen, Ammanford, SA18 1PH
Sold Sept 2015
£63,5001 Derwydd Avenue, Gwaun Cae Gurwen, Ammanford, SA18 1PH
Sold Mar 2012
£72,00048 Derwydd Avenue, Gwaun Cae Gurwen, Ammanford, SA18 1PH
Sold Mar 2008
£74,0004 Derwydd Avenue, Gwaun Cae Gurwen, Ammanford, SA18 1PH
Sold Jun 2000
£24,500
Everything we know about 50 Derwydd Avenue, 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 Derwydd Avenue homes
CO₂ Emissions for 50 Derwydd Avenue runs comfortably ahead of the street norm.
EPC Rating
83 (B)
Street avg 71 (C)
Floor Area
77 m²
Street avg 91 m²
CO₂ Emissions
1.6 t/year
Street avg 3.2 t/year
Habitable Rooms
4 rooms
Street avg 5 rooms
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Ger-yr-Afon — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.