186a, Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1DB
About 186a
186a is a three-bedroom detached house in Upper Brynamman, Ammanford, Ammanford (SA18 1DB). It has a recorded floor area of 165 m² (around 1776 sq ft), construction records dating it to 1983-1990 and council tax band F. The latest certificate (September 2021) shows an E (score 43), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on oil. Other recorded features include notable views and attached land beyond the plot. The home occupies a cul-de-sac position.
At 165 m² the property is well over the postcode median (91 m² across 29 EPCs), placing it in the larger end of the local stock. Across 2021–2022, sale prices on this property compounded at 17.3% per year. Today's modelled estimate of £446,000 is 14.4% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£220/sq ft) was about 133.1% above the typical sold price in the postcode. Most recent transfer: March 2022 at £390,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 186a
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
- Bedrooms3
- Dining roomYes
- Utility roomYes
- CloakroomYes
Outside
- Garagedouble
- LandYes
- Notable viewsYes
- Cul-de-sacYes
Energy performance
186a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
186a has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 186a
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
186a changed hands twice within eighteen months — unusual for the area.
£446,000
Modelled from EPC, postcode comparables and a sale-price growth of 17.3% per year over 1 year.
£390,000
Growth on file: 17.3% per year over 1 year.
Sales timeline
25 March 2022Most recent
£390,000
+17.3%over 9 months29 June 2021
£332,500
Median price across the last 5 sales in SA18 1DB: £202,500 (2025–2022).
Nearby sales in SA18 1DB
184 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1DB
Sold Aug 2025
£168,000133 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1DB
Sold Apr 2024
£225,000146 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1DB
Sold Dec 2022
£395,000139 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1DB
Sold Jan 2022
£90,000147 Cwmgarw Road, Upper Brynamman, Ammanford, SA18 1DB
Sold Jan 2022
£202,500
Everything we know about 186a, 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
On price per m², 186a stands well clear of the street.
Price per m²
£2,364
Street avg £1,326
Floor Area
165 m²
Street avg 116 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
9.4 t/year
Street avg 6.7 t/year
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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
Brynamman Industrial Estate — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.