3 Brynmawr Avenue, Ammanford, SA18 2DA
About 3 Brynmawr Avenue
3 Brynmawr Avenue is a four-bedroom detached house in Ammanford (SA18 2DA). It has a recorded floor area of 164 m² (around 1765 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (July 2025) shows a D (score 55), a step below the typical UK home. When first surveyed in February 2012 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Good to Very Good and hot-water efficiency went from Poor to Average; while window efficiency dropped from Good to Average and lighting dropped from Very Good to Poor. The recommended improvements would push it to C (score 78). Period features are noted in the property record.
Held since August 2001 — that's 25 years off the open market, well above the local norm. Today's modelled estimate of £366,000 sits 346.3% above the 2001 sale of £82,000. On a £-per-square-foot basis, the last sale (£46/sq ft) was about 66.7% below the postcode norm.
Know exactly what you're buying at 3 Brynmawr 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
- Bedrooms4
- Dining roomYes
Outside
- Private gardenfront_and_rear
- Garagedouble
Building
- Heating systemgas
- Period featuresYes
Energy performance
3 Brynmawr Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Wall insulation improved
Loft insulation upgraded to recommended levels
Planning history
3 Brynmawr Avenue has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 3 Brynmawr 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
3 Brynmawr Avenue's modelled value sits at over four times its earliest registered sale price (2001).
£366,000
Modelled from EPC, postcode comparables.
£82,000
Recorded with HM Land Registry.
Sales timeline
30 August 2001Most recent
£82,000
Median price across the last 5 sales in SA18 2DA: £399,950 (2024–2022).
Nearby sales in SA18 2DA
Cambrai House, Brynmawr Avenue, Ammanford, SA18 2DA
Sold May 2024
£410,00013 Brynmawr Avenue, Ammanford, SA18 2DA
Sold Mar 2024
£367,50072 Brynmawr Avenue, Ammanford, SA18 2DA
Sold Nov 2023
£405,00062 Brynmawr Avenue, Ammanford, SA18 2DA
Sold Nov 2022
£399,950Alltwen, Brynmawr Avenue, Ammanford, SA18 2DA
Sold Feb 2022
£365,000
Everything we know about 3 Brynmawr 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 Brynmawr Avenue homes
On years held, 3 Brynmawr Avenue stands well clear of the street.
Price per m²
£500
Street avg £1,629
Floor Area
164 m²
Street avg 179 m²
Habitable Rooms
8 rooms
Street avg 8 rooms
CO₂ Emissions
7.3 t/year
Street avg 6.7 t/year
Similar properties nearby
1 Bryn Derwen Road
SA18 2DL
1 Colonel Road, Betws
SA18 2HB
1 Brynmawr Lane
SA18 2BY
1 Carreg Y Dwfn, Llandyfan
SA18 2UB
1 Church Street
SA18 2NR
1 Dan Y Deri, Glanamman
SA18 2FH
1 Brynmawr Avenue
SA18 2DA
1 Clos Ty Coch
SA18 2FP
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
0.2 km
Myddynfych Drive — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.