Tir Bach, Derwydd Road, Ammanford, SA18 2LX
About Tir Bach
Tir Bach is a four-bedroom detached house in Ammanford (SA18 2LX). It has a recorded floor area of 160 m² (around 1722 sq ft), construction records dating it to 2003-2006 and council tax band F. The latest certificate (February 2020) returns a B (score 82), comfortably above the UK average. When first surveyed in September 2019 the rating was C, the property has climbed 1 band since. Between certificates, wall efficiency went from Good to Very Good, window efficiency went from Average to Very Good and hot-water efficiency went from Poor to Average. Main heating runs on oil. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.
At 160 m² it's 15.5% larger than the typical home in the postcode (139 m² median across 22 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £401,000 is 20.4% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£193/sq ft) was about 38.5% above the typical sold price in the postcode. Last sale on file: £333,000 in March 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at Tir Bach
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
- Bathrooms3
- Dining roomYes
Outside
- Private gardenfront_and_rear
- Garagedouble, detached
Building
- Heating systemoil
- Underfloor heatingYes
Energy performance
Tir Bach ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
High performance glazing installed
Wall insulation improved
More low energy lighting installed
Planning history
Tir Bach has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at Tir Bach
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
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£401,000
Modelled from EPC, postcode comparables.
£333,000
Recorded with HM Land Registry.
Sales timeline
19 March 2021Most recent
£333,000
Median price across the last 5 sales in SA18 2LX: £250,000 (2024–2022).
Nearby sales in SA18 2LX
2 Cennen Terrace, Derwydd Road, Ammanford, SA18 2LX
Sold Nov 2024
£211,500Dynevor House, Derwydd Road, Ammanford, SA18 2LX
Sold Nov 2024
£251,000Cennen Terrace, Ty Charlotte, Derwydd Road, Ammanford, SA18 2LX
Sold Aug 2023
£250,000Gelli Aur, Derwydd Road, Ammanford, SA18 2LX
Sold Aug 2022
£440,000Pippins, Derwydd Road, Ammanford, SA18 2LX
Sold Apr 2022
£210,000
Everything we know about Tir Bach, 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 Derwydd Road homes
Tir Bach outperforms the street on epc rating by a wide margin.
Price per m²
£2,081
Street avg £1,937
Floor Area
160 m²
Street avg 142 m²
CO₂ Emissions
2.9 t/year
Street avg 7.2 t/year
Years Held
5 years
Street avg 9 years
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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
College Inn — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.