Postcode district
EPC ratings in CM21
CM21 in East Hertfordshire has 2,900 properties with EPC certificates. The average rating is D, matching the East Hertfordshire average. Browse sectors below or search for a specific address to view detailed property data.
EPC distribution
Percentage of properties in each EPC band across CM21.
Property type mix
Distribution of property types (houses, flats, bungalows) within CM21.
In CM21, the most common EPC-rated properties are house (around 73%) and flat (around 18%). This mix shapes how easy it is for local homes to improve their EPC ratings.
Top recommendations
Improvements most often recommended in this district.
- 1
Solar photovoltaic panels, 2.5 kWp
3116 occurrences · Code 34
- 2
Solar water heating
2788 occurrences · Code 19
- 3
Low energy lighting for all fixed outlets
1761 occurrences · Code 35
- 4
Replace boiler with new condensing boiler
994 occurrences · Code 20
- 5
Floor insulation (solid floor)
938 occurrences · Code 58
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