21 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
About 21 Alltwen Hill
21 Alltwen Hill is a semi-detached house in Pontardawe, Swansea, Swansea (SA8 3AB). It has a recorded floor area of 96 m² (around 1036 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (July 2010) shows a D (score 56), a step below the typical UK home. The latest certificate is from July 2010, so improvements made since then won't be reflected.
Across 2007–2015, sale prices on this property compounded at 3.6% per year. Today's modelled estimate of £187,000 is 41.1% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£128/sq ft) was about 25.4% above the typical sold price in the postcode. On the market in August 2015 and unlisted since — roughly 11 years.
Energy performance
21 Alltwen Hill's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 15 Jul 2020
EPC Rating
Certificate validity
Expired on 15 July 2020
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
21 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
21 Alltwen Hill valuation sits well clear of the typical sold price in this postcode.
£187,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.6% per year over 8 years.
£132,500
Growth on file: 3.6% per year over 8 years.
Sales timeline
19 August 2015Most recent
£132,500
+32.5%over 7 years25 September 2007
£100,000
Median price across the last 5 sales in SA8 3AB: £168,000 (2026–2022).
Nearby sales in SA8 3AB
38 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Mar 2026
£168,00034 Alltwen Hill, Pontardawe, Swansea, SA8 3AB
Sold Jul 2025
£195,00041 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
£115,000
Versus other Alltwen Hill homes
On habitable rooms, 21 Alltwen Hill stands well clear of the street.
Price per m²
£1,376
Street avg £1,386
Floor Area
96 m²
Street avg 111 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
5.6 t/year
Street avg 6.2 t/year
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The neighbourhood at a glance
Crime
66/mo
Falling 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.







