20 Gron Road, Gwaun Cae Gurwen, Ammanford, SA18 1HD
About 20 Gron Road
20 Gron Road is a three-bedroom detached house in Gwaun Cae Gurwen, Ammanford, Ammanford (SA18 1HD). It has a recorded floor area of 141 m² (around 1518 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (September 2015) shows a D (score 56), a step below the typical UK home. When first surveyed in December 2008 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Poor to Good, lighting went from Very Poor to Poor and main heating went from Average to Good; while roof efficiency dropped from Good to Average. The recommended improvements would push it to C (score 75). The latest certificate is from September 2015, so improvements made since then won't be reflected.
At 141 m² the property is well over the postcode median (105 m² across 12 EPCs), placing it in the larger end of the local stock. Across 1996–2023, sale prices on this property compounded at 9.5% per year. Today's modelled estimate of £234,000 is 14.1% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£135/sq ft) was about 54.6% above the typical sold price in the postcode. Sold July 2023 for £205,000.
Know exactly what you're buying at 20 Gron 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
- Bedrooms3
- Bathrooms1
- Dining roomYes
- Utility roomYes
Outside
- Private gardenrear
- DrivewayYes
Building
- Heating systemgas_fired
Energy performance
20 Gron Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 09 Sept 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Switched from oil to mains gas, reducing emissions and costs
Heating controls upgraded for better temperature management
Hot water system upgraded
More low energy lighting installed
Planning history
20 Gron Road has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 20 Gron 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
20 Gron Road has more than quadrupled in price since its earliest registered sale in 1996.
£234,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.5% per year over 27 years.
£205,000
Growth on file: 9.5% per year over 27 years.
Sales timeline
9 July 2023Most recent
£205,000
+32.3%over 2 years18 February 2021
£155,000
+40.9%over 1 year8 October 2019
£110,000
+511.1%over 23 years22 September 1996
£18,000
Median price across the last 5 sales in SA18 1HD: £175,000 (2024–2021).
Nearby sales in SA18 1HD
3 Gron Road, Gwaun Cae Gurwen, Ammanford, SA18 1HD
Sold Sept 2024
£175,00022 Gron Road, Gwaun Cae Gurwen, Ammanford, SA18 1HD
Sold Aug 2022
£109,00021 Gron Road, Gwaun Cae Gurwen, Ammanford, SA18 1HD
Sold Jan 2022
£210,00011 Gron Road, Gwaun Cae Gurwen, Ammanford, SA18 1HD
Sold Jan 2021
£125,00019 Gron Road, Gwaun Cae Gurwen, Ammanford, SA18 1HD
Sold Jun 2018
£190,000
Everything we know about 20 Gron 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 Gron Road homes
20 Gron Road outperforms the street on floor area by a wide margin.
Price per m²
£1,454
Street avg £1,214
Floor Area
141 m²
Street avg 109 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
7.0 t/year
Street avg 6.7 t/year
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
CKs — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.