27a, Catherine Street, Swansea, SA1 4JT
About 27a
27a is an end-of-terrace house in Swansea (SA1 4JT). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (October 2021) shows a D (score 59), a step below the typical UK home. The recommended improvements would lift it to B (score 91), a 2-band jump.
Untraded for 19 years, with the last transfer in July 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £132,000 sits 164% above the 2007 sale of £50,000. At 48 m² it sits well below the postcode median (86 m² across 19 EPCs), making it one of the more compact homes locally.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 27 October 2031
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
27a has no planning applications on record.
But the area is active
44 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£132,000
Modelled from EPC, postcode comparables.
£50,000
Recorded with HM Land Registry.
Sales timeline
19 July 2007Most recent
£50,000
Median price across the last 5 sales in SA1 4JT: £165,000 (2026–2022).
Nearby sales in SA1 4JT
Versus other Catherine Street homes
On floor area, 27a runs well behind the street norm.
Price per m²
£1,042
Street avg £1,503
Floor Area
48 m²
Street avg 87 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
2.7 t/year
Street avg 3.6 t/year
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The neighbourhood at a glance
Crime
580/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Helens Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







