40 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
About 40 Heol Y Deri
40 Heol Y Deri is a semi-detached house in Cwmrhydyceirw, Swansea, Swansea (SA6 6JH). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1976-1982 and council tax band A. The latest certificate (April 2025) returns a high B (score 89), putting the home a stone's throw from an A rating. The rating has held steady at B across 2 certificates since October 2015. Between certificates, roof efficiency went from Good to Very Good. The recommended improvements would push it to A (score 92).
On energy efficiency it sits in the top 10% of properties in this postcode. Most recent transfer was October 2025 at £148,000 — fresh data. Across 1999–2025, sale prices on this property compounded at 7.9% per year. On a £-per-square-foot basis, the last sale (£186/sq ft) was about 120.6% above the typical sold price in the postcode.
Energy performance
40 Heol Y Deri ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
Solar PV panels (60 kWp) installed
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Planning history
40 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
Latest sale on 40 Heol Y Deri was the highest on Land Registry record across the postcode.
£151,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.9% per year over 26 years.
£148,000
Growth on file: 7.9% per year over 26 years.
Sales timeline
2 October 2025Most recent
£148,000
+3600.0%over 9 years19 October 2015
£4,000
-96.0%over 8 years16 May 2007
£99,950
+17.6%over 2 years26 November 2004
£85,000
+226.9%over 2 years19 December 2001
£26,000
+30.0%over 2 years8 June 1999
£20,000
Median price across the last 5 sales in SA6 6JH: £102,500 (2025–2017).
Nearby sales in SA6 6JH
9 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
£110,00026 Heol Y Deri, Cwmrhydyceirw, Swansea, SA6 6JH
Sold Mar 2017
£54,000
Versus other Heol Y Deri homes
On price per m², 40 Heol Y Deri stands well clear of the street.
Price per m²
£2,000
Street avg £1,021
Floor Area
74 m²
Street avg 74 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
0.8 t/year
Street avg 3.7 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.







