21 Sybil Street, Clydach, Swansea, SA6 5EU
About 21 Sybil Street
21 Sybil Street is a detached house in Clydach, Swansea, Swansea (SA6 5EU). It has a recorded floor area of 107 m² (around 1152 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (September 2021) shows an E (score 52), well below the UK norm with real room to improve. When first surveyed in July 2016 the rating was F, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average and window efficiency went from Average to Good. The recommended improvements would lift it to B (score 82), a 3-band jump.
At 107 m² the property is well over the postcode median (81 m² across 31 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). Across 2017–2022, sale prices on this property compounded at 7.8% per year. Today's modelled estimate of £255,000 is 15.9% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£191/sq ft) was about 108.3% above the typical sold price in the postcode. Last sale on file: £220,000 in May 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
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 changed
Windows upgraded, improving insulation
Roof insulation improved
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 £885 · Includes VAT
Planning history
21 Sybil Street has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£255,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.8% per year over 5 years.
£220,000
Growth on file: 7.8% per year over 5 years.
Sales timeline
24 May 2022Most recent
£220,000
+46.7%over 5 years18 April 2017
£150,000
Median price across the last 5 sales in SA6 5EU: £145,000 (2024–2022).
Nearby sales in SA6 5EU
20 Sybil Street, Clydach, Swansea, SA6 5EU
Sold Nov 2024
£145,00024 Sybil Street, Clydach, Swansea, SA6 5EU
Sold Jul 2024
£64,00026 Sybil Street, Clydach, Swansea, SA6 5EU
Sold Feb 2024
£103,86138 Sybil Street, Clydach, Swansea, SA6 5EU
Sold Aug 2023
£222,45042 Sybil Street, Clydach, Swansea, SA6 5EU
Sold Dec 2022
£189,995
Versus other Sybil Street homes
21 Sybil Street is notably below the street on co₂ emissions.
Price per m²
£2,056
Street avg £1,370
Floor Area
107 m²
Street avg 88 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.8 t/year
Street avg 4.0 t/year
Similar properties nearby
1 Ffordd Abiah, Clydach
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1 Factory Road, Clydach
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1 Down Street, Clydach
SA6 5HA
1 Clos Salem, Clydach
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1 Dyson Close, Clydach
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1 Bryntawe Hall Close, Ynystawe
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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
Carpenters Arms — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







