St. Helens Avenue - SA1 4NN
Key Postcode Insights
SA1 4NN is a residential postcode situated on St. Helens Avenue, Swansea, SA1 with 44 addresses.
It ranks as the 944th largest and 861st most expensive of the 1,104 postcodes in the SA1 area. The most common property type is a period house built between 1800 and 1911.
The postcode contains a total of 44 properties: 28 houses, 15 flats and 1 other property.
- Ave. Sale Price
- £164,925
- 10 Year change
- up 39.5%
- Ave. Rental Price
- £826pcm
- 10 Year change
- up 56.6%
- Ave. £ per ft²
- £171/ft²
- Ave. Gross Yield
- 6.0%/year/yr
Key Postcode Insights
SA1 4NN is a residential postcode situated on St. Helens Avenue, Swansea, SA1 with 44 addresses.
It ranks as the 944th largest and 861st most expensive of the 1,104 postcodes in the SA1 area. The most common property type is a period house built between 1800 and 1911.
The postcode contains a total of 44 properties: 28 houses, 15 flats and 1 other property.
- Ave. Sale Price
- £164,925
- 10 Year change
- up 39.5%
- Ave. Rental Price
- £826pcm
- 10 Year change
- up 56.6%
- Ave. £ per ft²
- £171/ft²
- Ave. Gross Yield
- 6.0%/year/yr
Explore Propertiesin SA1 4NN
- 71 St. Helens Avenue
Building  |  2 Flats
- 72 St. Helens Avenue
Building  |  2 Flats
- 73 St. Helens Avenue
4 Bed Period House
- 74 St. Helens Avenue
2 Bed Period House
Sales Market Trends
The last sale in SA1 4NN sold for £175,000 on 5th November 2025. Since then prices are up an average of 1.8%.
The current average value in the postcode is £164,925.
The SA1 4NN Sales Market has increased by 39.5% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 2.2% | £164,925 |
| June 2025 | 1.1% | £161,355 |
| June 2024 | 4.3% | £159,580 |
| June 2023 | 1% | £152,997 |
| June 2022 | 9.4% | £151,421 |
| June 2021 | 6.7% | £138,385 |
| June 2020 | 0.8% | £129,719 |
| June 2019 | 4.6% | £128,644 |
| June 2018 | 1.4% | £122,995 |
| June 2017 | 2.6% | £121,283 |
| June 2016 | 3% | £118,207 |
| June 2015 | -0.1% | £114,712 |
| June 2014 | 5.3% | £114,794 |
| June 2013 | -2% | £109,048 |
| June 2012 | -3.2% | £111,237 |
| June 2011 | -4.2% | £114,969 |
| June 2010 | 6.5% | £119,983 |
| June 2009 | -10.8% | £112,696 |
| June 2008 | -3.9% | £126,340 |
| June 2007 | 0% | £131,442 |
Rental Market Trends
The current average rental value in the postcode is £826.
The SA1 4NN Rental Market has increased by 56.6% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 2.7% | £826pcm |
| June 2025 | 3.5% | £804pcm |
| June 2024 | 6.6% | £777pcm |
| June 2023 | 7% | £729pcm |
| June 2022 | 12.6% | £681pcm |
| June 2021 | 8% | £605pcm |
| June 2020 | 1.2% | £560pcm |
| June 2019 | 2.3% | £553pcm |
| June 2018 | 0.2% | £541pcm |
| June 2017 | 2.4% | £540pcm |
| June 2016 | 2.4% | £527pcm |
| June 2015 | 1% | £515pcm |
| June 2014 | 1.5% | £510pcm |
| June 2013 | 0% | £503pcm |
| June 2012 | 0.8% | £503pcm |
| June 2011 | -0.7% | £499pcm |
| June 2010 | 2.3% | £502pcm |
| June 2009 | -6.1% | £490pcm |
| June 2008 | 4.1% | £522pcm |
| June 2007 | 0% | £502pcm |
Sales History
The last sale was on 5th November 2025 for £175,000 and since then the market in the area has increased by 1.8%. The postcode has had a total of 59 sales since 1995.
SA1 4NN has seen 6 sales in the last three years and 3 sales in the last twelve months.
- Sold Nov 2025£175,000 | 2 Bed House74, St. Helens Avenue, Swansea, SA1 4NN74, St. Helens Avenue, Swansea, SA1 4NN
- Sold Sep 2025£212,000 | 4 Bed House89, St. Helens Avenue, Swansea, SA1 4NN89, St. Helens Avenue, Swansea, SA1 4NN
- Sold Aug 2025£162,000 | 4 Bed House94, St. Helens Avenue, Swansea, SA1 4NN94, St. Helens Avenue, Swansea, SA1 4NN
- Sold Aug 2024£155,000 | 3 Bed House97, St. Helens Avenue, Swansea, SA1 4NN97, St. Helens Avenue, Swansea, SA1 4NN
- Sold Jul 2024£160,000 | 3 Bed House79, St. Helens Avenue, Swansea, SA1 4NN79, St. Helens Avenue, Swansea, SA1 4NN
Nearby Postcodes
SA1 4NN is the 944th largest and the 861st most expensive postcode out of the 1,104 postcodes in the SA1 area.
- SA1 4NW, St. Helens Avenue, Swansea, SA1SA1 4NW46 Addresses|49 m away
- SA1 4NP, Francis Street, Swansea, SA1SA1 4NP19 Addresses|86 m away
- SA1 4LX, King Edward's Road, Swansea, SA1SA1 4LX20 Addresses|98 m away
- SA1 4NH, Francis Street, Swansea, SA1SA1 4NH10 Addresses|102 m away
- SA1 4LY, King Edward's Road, Swansea, SA1SA1 4LY1 Addresses|108 m away
Property Types
- 19 period houses built between 1800 and 1911
- 9 period flats built between 1800 and 1911
- 9 modern houses built after 1980
- 1 flat of an unknown age
- 6 other addresses of unknown type
- period house (19)
- period flat (9)
- modern house (9)
- flat (1)
- Unknown (6)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 34 properties.
- The most common rating is D.
- A (0)
- E (3)
- B (2)
- F (0)
- C (14)
- G (0)
- D (15)
- No EPC (9)
Top 3 Most Expensive Sales
- Sold Oct 2017£290,000 | 2 Bed FlatFlat 3, Gabriel Lofts 70, St. Helens Avenue, Swansea, SA1 4NNFlat 3, Gabriel Lofts 70, St. Helens Avenue, Swansea, SA1 4NN
- Sold Jul 2025£285,000 | 4 Bed House5, St. Helens Avenue, Swansea, SA1 4ND5, St. Helens Avenue, Swansea, SA1 4ND
- Sold Dec 2021£253,000 | 5 Bed House1, St. Helens Avenue, Swansea, SA1 4ND1, St. Helens Avenue, Swansea, SA1 4ND
Schools Nearby
Public Transport Nearby
The closest station to SA1 4NN is Swansea station, which is 2.0 kilometres away.
- Swansea|2.0 km away
- Gowerton|6.3 km away
- Llansamlet|7.6 km away
- Skewen|9.7 km away
