21 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
About 21 Heol Y Deri
21 Heol Y Deri is a semi-detached house in Cwmrhydyceirw, Swansea, Swansea (SA6 6JH). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (January 2016) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 87), a 2-band jump. The latest certificate is from January 2016, so improvements made since then won't be reflected.
At 86 m² it's 17% larger than the typical home in the postcode (74 m² median across 28 EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 11 Jan 2026
EPC Rating
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
21 Heol Y Deri has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 Heol Y Deri has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£133,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SA6 6JH: £102,500 (2025–2018).
Nearby sales in SA6 6JH
40 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
Sold Oct 2025
£148,0009 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
Sold Jul 2025
£140,00033 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
Sold Feb 2025
£95,00019 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
Sold Aug 2021
£102,50010 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
Sold Nov 2017
£110,000
Versus other Heol Y Deri homes
Floor Area for 21 Heol Y Deri runs comfortably ahead of the street norm.
EPC Rating
65 (D)
Street avg 60 (D)
Floor Area
86 m²
Street avg 74 m²
CO₂ Emissions
3.3 t/year
Street avg 3.6 t/year
Habitable Rooms
3 rooms
Street avg 4 rooms
Similar properties nearby
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1 Can Yr Aderyn, Morriston
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Heol Fedw — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







