Postcode district report · August 2026

SO18, Southampton

SO18 is the 2nd Hapiest of Southampton's 6 postcode districts on the HPAI Swatch, which compares them with each other on prices, how the market is moving, energy efficiency and transport. SO18 also reaches into Eastleigh; these figures are for its homes in Southampton.

Homes sold
366
in the 12 months to August 2026
Median price
£275,000
-1.1% on the year before
Price per m²
£3,310
median, homes with an EPC
Flats
30%
of homes sold

SO18 on the HPAI Swatch

Each tile ranks SO18 against the other postcode districts of Southampton.

Price per m²£3,310/m² 2nd of 6
Price change-1.1% 3rd of 6
Sales a year366 a year 4th of 6
Sales change-1.4% 2nd of 6
Energy efficiency68 EPC score 3rd of 6
Carbon2.9 t CO₂ a home 4th of 6
Station nearby1.3 km 5th of 6
Yellow the best in Southampton Green above average Blue below average Purple weakest in Southampton

Yellow is Hapi: the more yellow, the better SO18 compares with the rest of Southampton. These colours compare postcode districts within Southampton; Southampton's own Swatch compares it with areas across England and Wales.

Southampton's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 SO19 596£265,000 +0.0%
2 SO18 366£275,000 -1.1%
3 SO16 508£270,000 +1.1%
4 SO15 437£255,000 -3.8%
5 SO14 202£206,000 -1.9%
6 SO17 166£225,000 -18.2%

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About these figures

Price per m²
Median price per square metre of homes sold in the last 12 months (homes with an EPC).
Price change
Median price in the last 12 months against the 12 months before.
Sales a year
Open-market sales in the last 12 months. More sales means a deeper, easier market.
Sales change
Sales in the 12 months to three months ago against the year before. The newest months are left out: Land Registry registers sales late.
Energy efficiency
Average EPC energy efficiency score of homes sold (higher is more efficient).
Carbon
Average carbon emissions of homes sold, tonnes a year. Lower is better.
Station nearby
Median distance from homes sold to the nearest railway station. Closer is better.

Open-market sales from HM Land Registry Price Paid Data in the 12 months to August 2026 (homes in Southampton only); price per m², energy and carbon from the homes sold that have an Energy Performance Certificate. Postcode districts with fewer than 20 sales a year in Southampton aren't ranked.