Postcode district report · August 2026

SO20, Test Valley

SO20 is the 7th Hapiest of Test Valley's 7 postcode districts on the HPAI Swatch, which compares them with each other on prices, how the market is moving, energy efficiency and transport.

Homes sold
65
in the 12 months to August 2026
Median price
£595,000
+4.2% on the year before
Price per m²
£4,408
median, homes with an EPC
Flats
8%
of homes sold

SO20 on the HPAI Swatch

Each tile ranks SO20 against the other postcode districts of Test Valley.

Price per m²£4,408/m² 3rd of 6
Price change+4.2% 1st of 7
Sales a year65 a year 7th of 7
Sales change-28.4% 7th of 7
Energy efficiency55 EPC score 6th of 6
Carbon7.1 t CO₂ a home 6th of 6
Station nearby10.0 km 5th of 5
Yellow the best in Test Valley Green above average Blue below average Purple weakest in Test Valley

Yellow is Hapi: the more yellow, the better SO20 compares with the rest of Test Valley. These colours compare postcode districts within Test Valley; Test Valley's own Swatch compares it with areas across England and Wales.

Test Valley's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 SO52 96£362,500 +1.4%
2 SO53 109£448,000 +0.7%
3 SP10 471£292,500 +2.6%
4 SO51 361£405,000 -2.4%
5 SP11 305£360,000 -1.4%
6 SO16 72£417,500 -0.1%
7 SO20 65£595,000 +4.2%

Estate agents: the local partner spot is open in SO20. Find out more

Thinking of buying or selling in SO20?
Get an evidence-based valuation of any home in a minute.
Value a home in SO20

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 Test Valley 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 Test Valley aren't ranked.