Postcode district report · August 2026

CM12, Basildon

CM12 is the 2nd Hapiest of Basildon's 8 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
305
in the 12 months to August 2026
Median price
£485,000
-2.0% on the year before
Price per m²
£5,448
median, homes with an EPC
Flats
13%
of homes sold

CM12 on the HPAI Swatch

Each tile ranks CM12 against the other postcode districts of Basildon.

Price per m²£5,448/m² 1st of 8
Price change-2.0% 6th of 8
Sales a year305 a year 3rd of 8
Sales change+2.1% 2nd of 8
Energy efficiency68 EPC score 4th of 8
Carbon3.7 t CO₂ a home 7th of 8
Station nearby1.1 km 2nd of 8
Yellow the best in Basildon Green above average Blue below average Purple weakest in Basildon

Yellow is Hapi: the more yellow, the better CM12 compares with the rest of Basildon. These colours compare postcode districts within Basildon; Basildon's own Swatch compares it with areas across England and Wales.

Basildon's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 SS12 251£375,000 +1.1%
2 CM12 305£485,000 -2.0%
3 SS15 343£335,000 -1.1%
4 SS14 244£325,000 +1.6%
5 SS16 357£340,000 -5.6%
6 SS11 165£392,500 +4.0%
7 CM11 187£460,000 -4.2%
8 SS13 193£305,000 +0.0%

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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 Basildon 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 Basildon aren't ranked.