Postcode district
EPC ratings in CM1
CM1 in Chelmsford has 23,763 properties with EPC certificates. The average rating is C, above the Chelmsford average. Browse sectors below or search for a specific address to view detailed property data. The area is predominantly house (60%). The most frequently recommended improvement is solar photovoltaic panels, 2.5 kwp.
EPC distribution
Percentage of properties in each EPC band across CM1.
Property type mix
Distribution of property types (houses, flats, bungalows) within CM1.
In CM1, the most common EPC-rated properties are house (around 60%) and flat (around 32%). 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
19377 occurrences · Code M
- 2
Solar water heating
17750 occurrences · Code L
- 3
Low energy lighting for all fixed outlets
13677 occurrences · Code H
- 4
Floor insulation (solid floor)
8449 occurrences · Code E
- 5
Replace boiler with new condensing boiler
5844 occurrences · Code J
Check a specific property
Enter your postcode to view an EPC report
Pick your address to see live EPC data and improvement recommendations.
Partner Booking
Book an EPC assessment in CM1
Book an accredited EPC assessment, Gas Safety certificate or EICR with EPC UK — qualified assessors covering your area.