100 Mountain Road, Upper Brynamman, Ammanford, SA18 1AN
About 100 Mountain Road
100 Mountain Road is a two-bedroom semi-detached house in Upper Brynamman, Ammanford, Ammanford (SA18 1AN). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (May 2019) shows an F (score 38), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 71), a 3-band jump. Main heating runs on oil.
At 76 m² it sits well below the postcode median (109 m² across 46 EPCs), making it one of the more compact homes locally. Across 2000–2019, sale prices on this property compounded at 7.5% per year. Today's modelled estimate of £127,000 is 36.6% above the 2019 sale price. Sold October 2019 for £93,000.
Know exactly what you're buying at 100 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
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
- StudyYes
Outside
- Private gardenrear
Building
- Heating systemoil
Energy performance
100 Mountain Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
100 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 100 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
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Sales history & valuation
100 Mountain Road has more than tripled in price since its earliest registered sale in 2000.
£127,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.5% per year over 19 years.
£93,000
Growth on file: 7.5% per year over 19 years.
Sales timeline
24 October 2019Most recent
£93,000
+148.0%over 17 years1 August 2002
£37,500
+56.3%over 1 year21 December 2000
£24,000
Median price across the last 5 sales in SA18 1AN: £325,000 (2025–2021).
Nearby sales in SA18 1AN
124 Mountain Road, Upper Brynamman, Ammanford, SA18 1AN
Sold Nov 2025
£350,00095 Mountain Road, Upper Brynamman, Ammanford, SA18 1AN
Sold Jun 2025
£265,00092 Mountain Road, Upper Brynamman, Ammanford, SA18 1AN
Sold Jul 2023
£80,00081 Mountain Road, Upper Brynamman, Ammanford, SA18 1AN
Sold May 2022
£405,00086 Mountain Road, Upper Brynamman, Ammanford, SA18 1AN
Sold Apr 2021
£225,000
Everything we know about 100 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
On floor area, 100 Mountain Road runs well behind the street norm.
Price per m²
£1,224
Street avg £1,298
Floor Area
76 m²
Street avg 149 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
6.5 t/year
Street avg 9.6 t/year
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1 Brynamman Road, Lower Brynamman
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1 Brynlloi Road, Glanamman
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Derlwyn Arms — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.