Postcode district
EPC ratings in AL9
AL9 in Welwyn Hatfield has 3,436 properties with EPC certificates. The average rating is D, below the Welwyn Hatfield average. Browse sectors below or search for a specific address to view detailed property data. The area is predominantly house (65%). The most frequently recommended improvement is solar photovoltaic panels, 2.5 kwp.
EPC distribution
Percentage of properties in each EPC band across AL9.
Property type mix
Distribution of property types (houses, flats, bungalows) within AL9.
In AL9, the most common EPC-rated properties are house (around 65%) and flat (around 21%). 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
3262 occurrences · Code M
- 2
Solar water heating
2625 occurrences · Code L
- 3
Low energy lighting for all fixed outlets
2189 occurrences · Code H
- 4
Floor insulation (solid floor)
1258 occurrences · Code E
- 5
Cavity wall insulation
1121 occurrences · Code B
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