23 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
About 23 Heol Y Deri
23 Heol Y Deri is an end-of-terrace house in Cwmrhydyceirw, Swansea, Swansea (SA6 6JH). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (February 2014) shows an E (score 41), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since February 2014. Between certificates, window efficiency went from Poor to Average; while roof efficiency dropped from Average to Poor and lighting dropped from Very Good to Very Poor. The recommended improvements would lift it to B (score 84), a 3-band jump. The latest certificate is from February 2014, so improvements made since then won't be reflected.
Held since October 2002 — that's 24 years off the open market, well above the local norm. Today's modelled estimate of £123,000 sits 355.6% above the 2002 sale of £27,000. On a £-per-square-foot basis, the last sale (£31/sq ft) was about 66.2% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs).
Energy performance
23 Heol Y Deri'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This certificate is over 10 years old and is no longer valid.Expired 11 Feb 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
Low energy lighting percentage decreased
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Planning history
23 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
23 Heol Y Deri's modelled value sits at over four times its earliest registered sale price (2002).
£123,000
Modelled from EPC, postcode comparables.
£27,000
Recorded with HM Land Registry.
Sales timeline
1 October 2002Most recent
£27,000
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
23 Heol Y Deri is notably below the street on price per m².
Price per m²
£329
Street avg £1,230
Floor Area
82 m²
Street avg 74 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
6.1 t/year
Street avg 3.5 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 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.







