Building Code of Australia (Residential Buildings) 2011

 (Vol. 1 & 2 of the National Construction Code Series)

Applicable Building Type(s)

New residential, Existing residential

Policy Requirement Level

Policy Sequence


Development Authority: Commonwealth Government - Australian Building Codes Board

Implementation Authority: State Government - Minister for Planning. Department for Planning, Transport and Infrastructure

Verification Authority: Local Government and the private sector

Enforcement Authority: Local Government

Prescriptive Compliance path


Floor area in relation to a room, means the area of the room measured within the finished surfaces of the walls, incl. areas occupied by built in furniture, fixtures and fittings

Energy Requirements:


Class 2

R-Values (m2.K/W)FloorSuspended floorWalls
Climate zone 1 0 1 3.3
Climate zone 2 0 1 3.3
Climate zone 3 0 0 3.3
Climate zone 4 0 0 2.8
Climate zone 5 0 1 2.8
Climate zone 6 0 1 2.8
Climate zone 7 1 1.5 2.8
Climate zone 8 2 2.5 3.8

Class 1

R-Values (m2.K/W)Suspended floorWalls
Climate zone 1 1.5 2.8
Climate zone 2 1 2.8
Climate zone 3 1.5 2.8
Climate zone 4 2.25 2.8
Climate zone 5 1 2.8
Climate zone 6 2.25 2.8
Climate zone 7 2.75 2.8
Climate zone 8 3.25 3.8


The aggregate air-conditioning energy value attributable to the glazing must be calculated using the method and criteria specified in tables J2.4a &b


Total area < 5% of floor area, unless required by health and safety compliance requirements. SHGC and U factors are specified by ratio of shaft index to percentage of floor space. Listed in Table J1.4

Air Leakage

1.5 ACH

Space Heating System

Single occupancy (class 1): Heating and cooling loads for model and reference buildings must be calculated by the specified method and criteria (Vol.2 V2.6.2.2) Multi-occupancy (class 2): Annual energy consumption for air conditioning must be calculated with the specified method and criteria (Vol.1 Tables 2a-2g).

Water Heating System

Greenhouse gas intensity of water heaters must be <100g CO2-e/MJ of the thermal energy load.


Multi-occupancy (class 2): Maximum illumination power density is prescribed by space type (Table J6.2a) with adjustments for control devices (Table J6.2b)

Renewable Energy

Heating for domestic services must obtained from an on-site renewable energy source, or reclaimed energy , or a source that has a greenhouse gas intensity <100g CO2J

Compliance Softwares:

End-uses considered:

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

Performance Compliance path

Energy Requirements:



Climate zones

HDD: Heating Degree Days

Max. temp: Average January maximum temperature

Water Vapour Pressure: Average 3pm January Water Vapour Pressure

 HDDMax. tempWater Vapour Pressure
Climate zone 1 - ≥ 30°C ≥2.1kPa
Climate zone 2 - <30°C ≥2.1kPa
Climate zone 3 - ≥ 30°C ≤2.1kPa
Climate zone 4 - ≥ 30°C ≤2.1kPa
Climate zone 5 <1000 <30°C ≤2.1kPa
Climate zone 6 1000-1999 <30°C ≤2.1kPa
Climate zone 7 2000 to Alpine <30°C ≤2.1kPa
Climate zone 8 Alpine Alpine Alpine