Postcode district report · August 2026

CM21, Epping Forest

CM21 is the 5th Hapiest of Epping Forest's 9 postcode districts on the HPAI Swatch, which compares them with each other on prices, how the market is moving, energy efficiency and transport. CM21 also reaches into East Hertfordshire; these figures are for its homes in Epping Forest.

Homes sold
26
in the 12 months to August 2026
Median price
£286,500
+0.5% on the year before
Price per m²
£4,529
median, homes with an EPC
Flats
62%
of homes sold

CM21 on the HPAI Swatch

Each tile ranks CM21 against the other postcode districts of Epping Forest.

Price per m²£4,529/m² 7th of 8
Price change+0.5% 2nd of 9
Sales a year26 a year 8th of 9
Sales change-19.0% 8th of 9
Energy efficiency70 EPC score 2nd of 8
Carbon2.8 t CO₂ a home 1st of 8
Station nearby0.4 km 1st of 8
Yellow the best in Epping Forest Green above average Blue below average Purple weakest in Epping Forest

Yellow is Hapi: the more yellow, the better CM21 compares with the rest of Epping Forest. These colours compare postcode districts within Epping Forest; Epping Forest's own Swatch compares it with areas across England and Wales.

Epping Forest's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 IG9 141£665,000 +14.7%
2 IG10 341£515,000 -2.8%
3 CM16 262£542,500 -9.6%
4 IG7 105£700,000 +0.3%
5 CM21 26£286,500 +0.5%
6 CM5 106£489,000 -4.1%
7 EN9 241£400,250 +0.1%
8 CM17 20£627,500 -5.6%
9 RM4 28£510,000 -21.0%

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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 Epping Forest 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 Epping Forest aren't ranked.