Postcode district
EPC ratings in HA1
HA1 in Harrow has 15,043 properties with EPC certificates. The average rating is D, matching the Harrow average. Browse sectors below or search for a specific address to view detailed property data. The area is predominantly flat (70%). The most frequently recommended improvement is internal or external wall insulation.
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Percentage of properties in each EPC band across HA1.
Property type mix
Distribution of property types (houses, flats, bungalows) within HA1.
In HA1, the most common EPC-rated properties are flat (around 70%) and house (around 25%). 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
Internal or external wall insulation
8146 occurrences
- 2
Low energy lighting for all fixed outlets
6633 occurrences
- 3
Solar photovoltaic panels, 2.5 kWp
5216 occurrences
- 4
Solar water heating
4181 occurrences
- 5
Floor insulation (suspended floor)
3502 occurrences
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Use these statistics
Free to reuse with a link to this page. Figures cover homes with an EPC on the official register, counted by their latest certificate. Homes that have never had an EPC are not included, so the figures describe certified homes, not every home in HA1, Harrow.
Summary
In postcode district HA1 (Harrow), 58.1% of homes with an EPC are rated band C or above, based on the latest certificate for 15,043 homes on the official register (statistics updated June 2026). That is 10.4 percentage points above the England and Wales figure of 47.7%.
Citation
EPC Advisor (2026). EPC ratings in HA1, Harrow. Statistics updated June 2026. Analysis of the MHCLG Get Energy Performance Data register (Open Government Licence v3.0). https://epcadvisor.co.uk/browse/harrow/HA1
- Band C or above:
- a current rating of A, B or C.
- Homes counted:
- 15,043
- Statistics updated:
- June 2026
- Source:
- The MHCLG Get Energy Performance Data register, published under the Open Government Licence v3.0. How we calculate these figures · All EPC data downloads