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AS 1428.1:2021: Accessibility Requirements in Australia
AS 1428.1:2021 outlines the technical requirements for accessible design in new buildings. Architects, developers, and builders need to understand this standard when planning accessible routes, doorways, ramps, bathrooms, and circulation areas.
Even if each feature looks compliant on paper, the overall layout can still cause access problems. If clearances or level changes are not well coordinated, this can lead to design changes, extra costs, and approval delays later on.
Knowing how AS 1428.1 relates to the National Construction Code (NCC) helps project teams identify the right accessibility requirements early and make better design decisions.
What Is AS 1428.1?
AS 1428.1 is an Australian Standard called Design for access and mobility, Part 1: General requirements for access – New building work. It sets minimum technical requirements to support access for people with disabilities, including those with mobility, sensory, and ambulant needs.
The 2021 edition, AS 1428.1:2021, is referenced by the NCC and the Disability (Access to Premises – Buildings) Standards 2010, commonly called the Premises Standards. The updated reference to the 2021 edition took effect in the Premises Standards on 29 July 2025.
The standard covers practical design details like accessible routes, doorways, ramps, stairs, handrails, surfaces, and bathrooms. It turns general accessibility obligations into clear design requirements.
The Core Principle: Continuous and Usable Access
An accessible building should let people move through spaces and use the available facilities. Good accessible design looks at how all building elements work together, not just each feature on its own.
For example, a doorway might have the right opening, but it can still be hard to use if there isn’t enough space to move or open the door. Likewise, an accessible route can become unusable if level changes, surface transitions, or misplaced fixtures block movement.
This is why accessibility compliance for buildings needs to be considered across the overall design. Circulation, door operation, changes in level and access to facilities should be coordinated from the concept stage.
Accessible Paths of Travel
Accessible routes need to have enough width, headroom, and space for people to move around. Depending on the layout, you might also need areas for passing and turning.
Designers should think about how people get to entrances, move through hallways, and reach important facilities. Furniture, fixtures, and other obstacles can make a path less usable.
Key Technical Requirements Under AS 1428.1
AS 1428.1:2021 covers several key elements that affect accessible building design.
Accessible Paths of Travel
Accessible routes need enough width, headroom, and space for people to move. Depending on the layout, passing and turning areas might also be needed.
Designers should think about how people get to entrances, move through hallways, and reach important facilities. Furniture, fixtures, and other obstacles can make a path less usable.
Ramps, Stairs and Handrails
When there are changes in level, it’s important to pay close attention to ramp slopes, landings, handrails, stair edges, and similar details. These features affect how safely people can move around the building.
You need to check the size and placement of these features against the standard’s requirements for each building element.
Doorways, Doors and Controls
Doorways should have enough clear space for people to get through and move around. The type of door hardware, handle design, and color contrast can also make doors easier to use.
It’s also important to plan where switches, power points, and other controls go. These should fit with the room layout and door operation, not be added at the last minute.
Sanitary Facilities and Surface Finishes
Accessible and ambulant bathrooms need the right layout, clearances, and fittings. They should be arranged so users can easily get to and use them.
You also need to think about floor surfaces, transitions, grates, and carpets. Signs, including tactile and Braille information, help people find their way and access spaces.
The exact requirements depend on the specific rules and the building’s context. A general checklist isn’t enough; you need to assess each project against the standard.
Resolve Accessibility Risks Before They Delay Your Project
Get expert advice on AS 1428.1 early to identify compliance gaps, protect project timelines, and reduce avoidable costs.
Request a Design Review →How AS 1428.1 Relates to NCC Accessibility Requirements
AS 1428.1 is just one part of Australia’s wider accessibility rules. The NCC and Premises Standards set out where access is needed, and AS 1428.1 gives the technical details for many design elements.
The NCC also covers other accessibility topics through its own rules and referenced standards. These include things like lifts, hearing support, tactile ground indicators, signage, and accessible parking.
The applicable NCC edition and state or territory variations must be confirmed for each project. Although NCC 2025 was published for jurisdictions to consider adopting from 1 May 2026, adoption timelines vary.
The Australian Building Codes Board’s guidance explains the relationship between the amended Premises Standards and NCC 2022 Amendment 2.
AS 1428.1:2021 mainly applies to new buildings. Existing buildings might have different requirements, depending on their condition, legal obligations, and any planned changes. The standard doesn’t mean every old building must be fully upgraded.
Why Accessibility Compliance Matters
Accessibility shapes how people get into, move around, and use a building. It also affects how designs are coordinated, documented, and built.
If accessibility problems are found late, teams might have to change layouts, move fixtures, or redo finished work. These changes can add costs and delay the project.
Looking at accessibility early helps architects and developers spot compliance gaps while there’s still time to adjust the design. It also creates better spaces for people with disabilities and helps teams meet legal requirements.
You need to check compliance against the rules that apply to your specific project. Just meeting some parts of AS 1428.1 doesn’t mean you’ve met all NCC or disability access requirements.
When Should You Engage an Access Consultant?
An access consultant can help you spot accessibility risks and understand the technical and legal requirements during design and construction.
Early involvement is particularly useful when:
- Developing concept designs and coordinating accessible circulation.
- Preparing documentation for planning or building approvals.
- Reviewing doorways, ramps, sanitary facilities and other access-sensitive details.
- Arranging an access audit of an existing building before alterations, upgrades or changes of use.
- Evaluating alternative solutions where the standard compliance pathway may not suit the design.
How Ai Consultancy Can Help
Ai Consultancy offers access consulting services to help architects, developers, builders, and other project teams meet accessibility requirements across Australia.
Our services include Access Design Reviews and Reports, access due diligence, access audits, performance solutions for accessibility, and support with inspections and project completion.
We review your project’s design against the relevant accessibility requirements, identify possible compliance risks, and give practical technical advice. If your design needs a different compliance approach, we can help find and assess suitable performance-based solutions within the rules.
Getting Ai Consultancy involved early can help your team coordinate accessibility with the overall design, avoid unnecessary redesign, and move approvals forward with more confidence.
Address Accessibility Risks Before They Affect Your Project
Get advice tailored to your project on AS 1428.1, NCC accessibility requirements, and the access rules that apply to your development.
Discuss Your Project →Frequently Asked Questions
AS 1428.1:2021 is the updated edition of the standard, replacing AS 1428.1:2009 in relevant regulatory references. The 2021 edition includes revised technical provisions. Project teams should confirm which edition applies under the relevant NCC and Premises Standards requirements rather than assuming the newest edition automatically governs every project.
No. AS 1428.1:2021 addresses new building work, and its requirements apply where referenced by relevant regulations. The extent of required access provisions depends on the building, its use, the applicable NCC edition and jurisdictional variations. Existing buildings may also have separate accessibility obligations under disability discrimination legislation.
The National Construction Code (NCC) establishes building requirements and identifies where accessibility provisions apply. AS 1428.1 provides technical specifications for many access elements, including circulation spaces, doorways, ramps and sanitary facilities. Project teams need to consider both the applicable NCC provisions and the standards they reference.
An access audit reviews a building or facility to identify potential accessibility barriers and assess relevant features against applicable requirements. Depending on the scope, it may examine entrances, paths of travel, doorways, sanitary facilities. The findings help property owners and project teams understand compliance gaps and determine appropriate next steps.
In some circumstances, an alternative or performance-based solution may be available under the applicable regulatory framework. It must demonstrate that the relevant performance requirements are satisfied and follow the required assessment process. An access consultant can help evaluate the design constraints, applicable requirements and evidence needed to support the proposed approach.
AS 1428.1 is copyright and is available to purchase from Standards Australia. The NCC itself is free to access on the ABCB website.
