23 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
About 23 Alltwen Hill
23 Alltwen Hill is a semi-detached house in Pontardawe, Swansea, Swansea (SA8 3AB). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (May 2021) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in September 2016 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good and lighting went from Average to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 87), a 2-band jump.
Across 1997–2021, sale prices on this property compounded at 3.5% per year. Today's modelled estimate of £153,000 sits 93.7% above the 2021 sale of £79,000. Most recent transfer: June 2021 at £79,000. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. At 72 m² it's 22.3% smaller than the typical home in the postcode (93 m² median across 16 EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
23 Alltwen Hill has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
23 Alltwen Hill has more than doubled in price since the earliest registered sale in 1997.
£153,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.5% per year over 24 years.
£79,000
Growth on file: 3.5% per year over 24 years.
Sales timeline
13 June 2021Most recent
£79,000
+14.5%over 1 year11 March 2020
£69,000
-23.3%over 2 years12 February 2018
£89,950
+160.7%over 20 years1 April 1997
£34,500
Median price across the last 5 sales in SA8 3AB: £123,000 (2024–2021).
Nearby sales in SA8 3AB
41 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Jan 2024
£123,000Mountain View, Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Sept 2023
£267,50017 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Sept 2022
£115,00027 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Aug 2022
£190,000Mount Pleasant, Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Feb 2017
£172,000
Versus other Alltwen Hill homes
CO₂ Emissions for 23 Alltwen Hill runs comfortably ahead of the street norm.
Price per m²
£1,097
Street avg £1,281
Floor Area
72 m²
Street avg 112 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.4 t/year
Street avg 6.3 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Alltwen Hill — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







