Dynevor House, Derwydd Road, Ammanford, SA18 2LX
About Dynevor House
Dynevor House is a four-bedroom detached house in Ammanford (SA18 2LX). It has a recorded floor area of 137 m² (around 1475 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (June 2019) shows a G (score 6), near the bottom of the EPC scale. Earlier certificates rated it F (May 2010); the latest reading is one band lower. Between certificates, roof efficiency went from Average to Good, window efficiency went from Average to Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Poor to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 79), a 4-band jump. Main heating runs on to be used only when there is no heating/hot. Other recorded features include a basement. Period features are noted in the property record.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2014–2024, sale prices on this property compounded at 2.7% per year. On a £-per-square-foot basis, the last sale (£170/sq ft) was about 20.5% above the typical sold price in the postcode. Last sale on file: £251,000 in November 2024.
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Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms4
- Bathrooms2
- BasementYes
Outside
- Private gardenrear
- GarageYes
Building
- Central heatingYes
- Period featuresYes
Energy performance
Dynevor House sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Hot water efficiency decreased
Window efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
Dynevor House has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at Dynevor House
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
Dynevor House saw 3 transfers in just over a decade — high turnover for the postcode.
£266,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.7% per year over 10 years.
£251,000
Growth on file: 2.7% per year over 10 years.
Sales timeline
27 November 2024Most recent
£251,000
+22.4%over 6 years30 August 2018
£205,000
+6.5%over 3 years1 December 2014
£192,500
Median price across the last 5 sales in SA18 2LX: £250,000 (2024–2021).
Nearby sales in SA18 2LX
2 Cennen Terrace, Derwydd Road, Ammanford, SA18 2LX
Sold Nov 2024
£211,500Cennen 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
£210,000Crud Yr Awel, Derwydd Road, Ammanford, SA18 2LX
Sold Aug 2021
£335,000
Everything we know about Dynevor House, 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
On epc rating, Dynevor House runs well behind the street norm.
Price per m²
£1,832
Street avg £1,950
Floor Area
137 m²
Street avg 143 m²
Habitable Rooms
8 rooms
Street avg 6 rooms
CO₂ Emissions
13.0 t/year
Street avg 6.7 t/year
Similar properties nearby
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.