Bryn Derwen, Coronation Road, Upper Brynamman, Ammanford, SA18 1BB
About Bryn Derwen
Bryn Derwen is a detached house in Upper Brynamman, Ammanford, Ammanford (SA18 1BB). It has a recorded floor area of 135 m² (around 1453 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (May 2017) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2017. The recommended improvements would push it to C (score 78). Main heating runs on oil.
At 135 m² the property is well over the postcode median (97 m² across 13 EPCs), placing it in the larger end of the local stock.
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Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
Planning history
Bryn Derwen has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at Bryn Derwen
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
Bryn Derwen has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£264,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SA18 1BB: £130,000 (2025–2018).
Nearby sales in SA18 1BB
8 Coronation Road, Upper Brynamman, Ammanford, SA18 1BB
Sold Apr 2025
£175,00010 Coronation Road, Upper Brynamman, Ammanford, SA18 1BB
Sold Apr 2023
£162,00017 Coronation Road, Upper Brynamman, Ammanford, SA18 1BB
Sold Nov 2019
£95,0005 Coronation Road, Upper Brynamman, Ammanford, SA18 1BB
Sold May 2018
£105,0009 Coronation Road, Upper Brynamman, Ammanford, SA18 1BB
Sold May 2015
£78,000
Everything we know about Bryn Derwen, 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 Coronation Road homes
Floor Area for Bryn Derwen runs comfortably ahead of the street norm.
EPC Rating
61 (D)
Street avg 55 (E)
Floor Area
135 m²
Street avg 100 m²
CO₂ Emissions
5.8 t/year
Street avg 5.8 t/year
Habitable Rooms
6 rooms
Street avg 5 rooms
Similar properties nearby
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1 Brynamman Road, Lower Brynamman
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1 Brynglas, King Edward Road, Tairgwaith
SA18 1YN
1 Ardwyn Road, Upper Brynamman
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1 Bryn Avenue, Upper Brynamman
SA18 1BD
1 Bryn Road, Upper Brynamman
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Heol Gelynen — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.