Within the NCC residential buildings are divided into several different class types, these are:

  • Class 1a – A single dwelling that is either a detached house or one of a group of two or more attached dwellings, each being a building, separated by a fire-resisting wall, including a row house, terrace house, town house or villa unit.
  • Class 1b – a boarding house, guest house or hostel.
  • Class 2 – A building containing 2 or more sole-occupancy units each being a separate dwelling, such as, apartment buildings and flat/unit developments.
  • Class 4 – A dwelling in a building that is not a residential building, i.e. it is the only dwelling in the building. A caretaker’s residence in an office building is an example of this.

Dashboards only cover NCC building class 1a, class 2 and class 4 dwellings. Class 1a dwellings are simplified to class 1 in the dashboards. Class 4 are included, but are very small in number and in many areas there will not be sufficient in number to display data on.

Nationwide House Energy Rating Scheme
Supported by data from the Nationwide House Energy Rating Scheme (NatHERS)