12 Bonllwyn, Ammanford, SA18 2EF
About 12 Bonllwyn
12 Bonllwyn is a three-bedroom semi-detached house in Ammanford (SA18 2EF). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (April 2013) shows a D (score 57), a step below the typical UK home. The recommended improvements would lift it to B (score 83), a 2-band jump. The latest certificate is from April 2013, so improvements made since then won't be reflected.
Across 1999–2019, sale prices on this property compounded at 9.7% per year. Today's modelled estimate of £138,000 is 32.7% above the 2019 sale price. Most recent transfer: May 2019 at £104,000.
Know exactly what you're buying at 12 Bonllwyn
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
Building
- Heating systemgas_fired
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 02 Apr 2023
EPC Rating
Planning history
12 Bonllwyn has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 12 Bonllwyn
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
Price for 12 Bonllwyn has grown more than fourfold since the 1999 starting point.
£138,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.7% per year over 20 years.
£104,000
Growth on file: 9.7% per year over 20 years.
Sales timeline
23 May 2019Most recent
£104,000
+4.1%over 14 years18 July 2004
£99,950
+534.1%over 5 years18 January 1999
£15,763
Median price across the last 5 sales in SA18 2EF: £138,000 (2025–2023).
Everything we know about 12 Bonllwyn, 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 Bonllwyn homes
Price per m²
£1,072
Street avg £1,227
Floor Area
97 m²
Street avg 109 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.7 t/year
Street avg 5.6 t/year
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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
0.0 km
Blaenau — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.