07/05/2024
Time to read
4 minutes

Australia's National Construction Code (NCC) is set for major changes in its 2025 update. Amendments proposed in the draft address tighter energy efficiency, water leaks, condensation, public toilets for women, carpark fire safety, and clearer pathways for code compliance.


Focus on Energy Efficiency

The most significant changes center on energy efficiency for commercial buildings. The NCC 2025 draft aims to make new commercial buildings net-zero ready, allowing for full electrification. These measures include:

  • Stricter thermal performance requirements
  • Mandatory on-site energy generation (e.g., solar panels)
  • Provisions for easy transition from gas to electric appliances

These changes are expected to benefit the economy and align with Australia's climate goals.


Preventing Water Damage

The draft also tackles water leaks that commonly plague apartments. New requirements would mandate a slight slope on horizontal surfaces (e.g., balconies) to direct water away from the building. This minor change could prevent costly water damage in many new apartments.


Condensation Control

To control condensation as building airtightness improves, the draft includes climate zone-specific revisions. While these changes are modest, they aim to reduce mold growth and related health risks, particularly in cooler climates.


Improved Public Facilities for Women

The 2025 code update addresses two issues concerning bathroom facilities for women:

  • Reduced Queuing: In single-auditorium entertainment venues, more toilets for women will be required, reducing long wait times.
  • Menstrual Hygiene: All commercial buildings must provide facilities for dispensing sanitary items, improving public health and facility management.


Enhanced Carpark Fire Safety

The draft strengthens fire safety requirements for structured carparks, regardless of type (open-air or basement). Changes include:

  • Increased fire resistance levels
  • Mandatory sprinklers in carparks with 40+ vehicles and car stackers

These are driven by larger, more flammable vehicles and the increased use of carparks for non-vehicle purposes (e.g., bike storage, changing rooms).


Clearer Compliance Assessment

The NCC 2025 draft prohibits using "expert judgment" alone to assess performance solutions related to fire safety and structural integrity. This ensures compliance relies on clear methods, evidence, and documentation.


What to Do Next

Building practitioners are encouraged to: