42 Mountain Road, Upper Brynamman, Ammanford, SA18 1AE
About 42 Mountain Road
42 Mountain Road is a detached house in Upper Brynamman, Ammanford, Ammanford (SA18 1AE). It has a recorded floor area of 132 m² (around 1421 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (May 2021) shows an E (score 39), well below the UK norm with real room to improve. When first surveyed in January 2014 the rating was G, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Average and lighting went from Poor to Good. The recommended improvements would lift it to A (score 95), a 4-band jump. Main heating runs on oil.
At 132 m² the property is well over the postcode median (92 m² across 23 EPCs), placing it in the larger end of the local stock. On a £-per-square-foot basis, the last sale (£257/sq ft) was about 180% above the typical sold price in the postcode. Most recent transfer: July 2021 at £365,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 42 Mountain 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
Energy performance
42 Mountain Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
Upgraded to gas central heating
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water system upgraded
More low energy lighting installed
Planning history
42 Mountain Road has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 42 Mountain 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 42 Mountain Road was the highest on Land Registry record across the postcode.
£370,000
Modelled from EPC, postcode comparables.
£365,000
Recorded with HM Land Registry.
Sales timeline
27 July 2021Most recent
£365,000
Median price across the last 5 sales in SA18 1AE: £115,000 (2025–2023).
Nearby sales in SA18 1AE
46 Mountain Road, Upper Brynamman, Ammanford, SA18 1AE
Sold Apr 2025
£208,50021 Mountain Road, Upper Brynamman, Ammanford, SA18 1AE
Sold Jul 2024
£115,00024 Mountain Road, Upper Brynamman, Ammanford, SA18 1AE
Sold Mar 2024
£99,00049 Mountain Road, Upper Brynamman, Ammanford, SA18 1AE
Sold Oct 2023
£273,00019 Mountain Road, Upper Brynamman, Ammanford, SA18 1AE
Sold Sept 2023
£99,500
Everything we know about 42 Mountain 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 Mountain Road homes
Price per m² for 42 Mountain Road runs comfortably ahead of the street norm.
Price per m²
£2,765
Street avg £1,149
Floor Area
132 m²
Street avg 91 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
8.6 t/year
Street avg 6.7 t/year
Similar properties nearby
1 Brynglas, King Edward Road, Tairgwaith
SA18 1YN
1 Ceidrim Road, Garnant
SA18 1LP
1 Abernant Road, Cwmgors
SA18 1RB
1 Barry Road, Lower Brynamman
SA18 1TY
1 Clos Bryncam, Garnant
SA18 1NJ
1 Brynlloi Road, Glanamman
SA18 1EQ
1 Brynamman Road, Lower Brynamman
SA18 1TR
1 Ardwyn Road, Upper Brynamman
SA18 1AL
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
New Road — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.