1 St Helens Avenue, Swansea, SA1 4ND
About 1 St Helens Avenue
1 St Helens Avenue is an end-of-terrace house in Swansea (SA1 4ND). It has a recorded floor area of 154 m² (around 1658 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (March 2020) shows an E (score 44), well below the UK norm with real room to improve. When first surveyed in March 2010 the rating was F, the property has climbed 1 band since. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 79), a 2-band jump.
It lags the bulk of the postcode on energy efficiency (less efficient than 76% of similar EPCs). Across 1999–2021, sale prices on this property compounded at 7% per year. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 74.4% above the typical sold price in the postcode. Last sale on file: £253,000 in December 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 1 St Helens Avenue
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
1 St Helens Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Certificate validity
Valid until 17 March 2030
Property Improvements
Changes detected from historical EPC data
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
1 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
1 St Helens Avenue has more than quadrupled in price since its earliest registered sale in 1999.
£264,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.0% per year over 23 years.
£253,000
Growth on file: 7.0% per year over 23 years.
Sales timeline
3 December 2021Most recent
£253,000
+15.0%over 8 years4 January 2013
£220,000
+300.0%over 13 years3 June 1999
£55,000
Median price across the last 5 sales in SA1 4ND: £209,000 (2025–2019).
Nearby sales in SA1 4ND
Versus other St Helens Avenue homes
On co₂ emissions, 1 St Helens Avenue runs well behind the street norm.
Price per m²
£1,643
Street avg £1,090
Floor Area
154 m²
Street avg 151 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
9.4 t/year
Street avg 6.8 t/year
Everything you need to know about 1 St Helens Avenue
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
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Similar properties nearby
The neighbourhood at a glance
Crime
580/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.