AS 1428.1:2021 — What Changed from the 2009 Edition
AS 1428.1 is Australia's primary standard for the design of accessible buildings. The 2021 edition supersedes the 2009 edition and is now a referenced standard under both the NCC 2025, NCC 2022 Amendment 2 and the updated Disability (Access to Premises — Buildings) Standards 2010. For practitioners who have worked from the 2009 edition for over a decade, it is worth understanding where the 2021 edition differs in practice.
Sanitary Facilities
The sanitary facilities section sees the most substantive changes. The 2021 edition expands the range of compliant layout arrangements shown in the figures, addressing a long-standing issue where the 2009 edition was often interpreted as permitting only a single absolute arrangement. Tapware requirements now accommodate a broader range of control options, and there are revised specifications for grabrail heights and offsets from the WC pan, backrest requirements, flushing control clearances, and toilet roll holder projection limits. Shower provisions have also been updated, with clarifications to circulation height, floor waste arrangements, and tolerance ranges across shower fixtures.
Ambulant Facilities
A notable change affecting ambulant sanitary compartments relates to raked or cranked grabrails. The 2021 edition reduces the minimum permissible length from 700mm to 400-450mm. Practitioners should be aware that this creates a conflict between the two editions — a grabrail complying with the 2009 edition will not satisfy the updated Premises Standard, and most currently available raked grabrail products do not yet meet the 2021 dimensions. In practice, a 90-degree grabrail remains the most straightforward compliant option.
Handrails and Grabrails
The 2021 edition widens the acceptable diameter range for handrail profiles to 30-52mm and increases the required clearance below a handrail from 15mm to 25mm. Tolerance allowances for handrail heights have been expanded, with three specific conditions now specified. These changes bring the standard into closer alignment with the Disability Standards for Accessible Public Transport (DSAPT) and reflect practical feedback from the construction industry on available materials and installation tolerances.
Ramps, Walkways and Surfaces
The ramps and walkways section includes clarified requirements for kerb rails on freestanding ramp handrails, revised landing geometry for curved ramps, and updated figures for threshold and step ramp details including tapered and splayed edge construction. New provisions for timber decking and boardwalks address slip resistance and accessible surfacing tolerances — an area not adequately covered in the 2009 edition. The 300mm maximum reveal depth for doorways, which was present in the 2001 edition but removed in 2009, has been reintroduced in the 2021 edition.
Visual Contrast and Signage
Appendix B has been revised to expand the procedure for assessing luminance contrast, with additional emphasis on measurement methodology. The 2021 edition also introduces guidance on measuring the opacity of visual glazing bands — a practical addition that addresses a consistent point of uncertainty in the 2009 edition. Signage provisions include minor note additions throughout for clarity.
New Appendix C — Vision Impairment
The former Appendix C summary of ramp and walkway specifications has been replaced with new informative content on vision impairment and perceptual challenges. While informative rather than normative, this addition provides useful context for designers working on wayfinding and accessible environments for people with low vision.
What This Means for Your Projects
With AS 1428.1:2021 now referenced under both the NCC and the updated Premises Standards, documentation prepared against the 2009 edition should be reviewed on current projects. The changes are largely incremental, but several — particularly around sanitary facility layouts, grabrail dimensions, and luminance contrast assessment — have direct implications for design and specification.
Francis Consulting is across the changes and available to assist with compliance advice, access reports, and performance solutions. Get in touch at info@francisconsulting.com.au or call +61 412 413 728.