40 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1BU
About 40 Cwmgarw Road
40 Cwmgarw Road is a one-bedroom end-of-terrace house in Upper Brynamman, Ammanford, Ammanford (SA18 1BU). It has a recorded floor area of 30 m² (around 323 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (October 2022) shows a C (score 70). When first surveyed in June 2009 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Very Good and hot-water efficiency went from Very Poor to Good; while window efficiency dropped from Good to Average. The recommended improvements would lift it to A (score 94), a 2-band jump.
Held since October 2001 — that's 25 years off the open market, well above the local norm. Across 1996–2001, sale prices on this property compounded at 16.5% per year. Today's modelled estimate of £106,000 sits 748% above the 2001 sale of £12,500. On a £-per-square-foot basis, the last sale (£39/sq ft) was about 50% below the postcode norm. At 30 m² it sits well below the postcode median (80 m² across 25 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.
Know exactly what you're buying at 40 Cwmgarw Road
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
- Bedrooms1
Outside
- Private gardenYes
- Parkingoff_road
Building
- Heating systemgas_fired
Energy performance
40 Cwmgarw Road's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
Floor insulation added or improved
More low energy lighting installed
Planning history
40 Cwmgarw Road has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 40 Cwmgarw Road
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
Latest sale on 40 Cwmgarw Road was the lowest on Land Registry record across the postcode.
£106,000
Modelled from EPC, postcode comparables and a sale-price growth of 16.5% per year over 5 years.
£12,500
Growth on file: 16.5% per year over 5 years.
Sales timeline
11 October 2001Most recent
£12,500
+108.3%over 4 years16 December 1996
£6,000
Median price across the last 5 sales in SA18 1BU: £125,000 (2025–2022).
Nearby sales in SA18 1BU
16 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1BU
Sold May 2025
£125,00014 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1BU
Sold Apr 2024
£135,00026 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1BU
Sold Mar 2024
£157,95066 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1BU
Sold Feb 2024
£60,50074 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1BU
Sold Dec 2022
£88,000
Everything we know about 40 Cwmgarw Road, 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 Cwmgarw Road homes
40 Cwmgarw Road is notably below the street on price per m².
Price per m²
£417
Street avg £1,200
Floor Area
30 m²
Street avg 90 m²
Habitable Rooms
2 rooms
Street avg 5 rooms
CO₂ Emissions
1.5 t/year
Street avg 5.4 t/year
Similar properties nearby
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1 Bryn Road, Upper Brynamman
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1 Bro Ryan, Grenig Road, Glanamman
SA18 1JD
1 Church Lane, Cwmgors
SA18 1PF
1 Brook Terrace, Tairgwaith
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1 Amman Terrace, Rhosamman
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1 Cemetery Road, Cwmgors
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Brynamman Square — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.