Applicable Building Type(s)

New residential

Policy Requirement Level


Policy Sequence


Development Authority: Department for Communities and Local Government

Implementation Authority: Local Authority

Verification Authority: Local Authority/ Approved Inspector

Enforcement Authority: Local Authority

Prescriptive Compliance path

Enclosed spaces measured to the internal face of the external walls. Incl. areas of sloping surfaces such as staircases, excl. unenclosed areas such as open floors, covered ways and balconies

Energy Requirements:


U-Values (W/m2.K)WallsFloorRoof
All climate zones 0.3 0.25 0.2


U-Values (W/m2.K)Windows
All climate zones 2

Air Leakage

10 m3/(h.m2) at 50 Pa

Compliance Softwares:

End-uses considered:

Space cooling, Space heating, Water heating, Lighting interior, Ventilation

Performance Compliance path

Building performance requirement (kgCO2/m2) based on equivalent model building

Energy Requirements:



Climate zones