15 St Helens Avenue, Swansea, SA1 4ND
About 15 St Helens Avenue
15 St Helens Avenue is a mid-terrace house in Swansea (SA1 4ND). It has a recorded floor area of 153 m² (around 1647 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (May 2022) shows a D (score 59), a step below the typical UK home. When first surveyed in March 2010 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Poor to Good and hot-water efficiency went from Average to Good. The recommended improvements would lift it to B (score 84), a 2-band jump.
Held since July 2010 — that's 16 years off the open market, well above the local norm. Today's modelled estimate of £267,000 sits 58.9% above the 2010 sale of £168,000.
Energy performance
15 St Helens Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency improved
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
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
15 St Helens Avenue 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
15 St Helens Avenue valuation sits well clear of the typical sold price in this postcode.
£267,000
Modelled from EPC, postcode comparables.
£168,000
Recorded with HM Land Registry.
Sales timeline
8 July 2010Most recent
£168,000
Median price across the last 5 sales in SA1 4ND: £252,000 (2025–2020).
Nearby sales in SA1 4ND
Versus other St Helens Avenue homes
Price per m²
£1,098
Street avg £1,129
Floor Area
153 m²
Street avg 150 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
6.5 t/year
Street avg 7.0 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Helens Crescent — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







