Revision of NZS 4121:2001 – Design for access and mobility
4121:2001 Design for access and mobility – buildings and associated facilities, has been the subject of a scoping exercise to determine its ongoing suitability and need for modernisation as a key compliance element for accessible public spaces.
What's happening?
NZS 4121:2001 Design for access and mobility – Buildings and associated facilities is a significant standard within New Zealand’s building regulatory framework. Originally introduced as NZS 4121:1985 and cited under the Building Act 1991, the current 2001 edition remains referenced in the Building Act 2004. After more than two decades, the standard is now considered outdated and in need of a comprehensive review.
The standard currently focuses on public spaces including accessible routes, car parks, footpaths, ramps, landings, entrances, corridors, doorways, doors, stairs, lifts, toilets, showers, accommodation, public facilities and places of assembly, entertainment and recreation.
NZS 4121:2001 remains one of the most widely used standards in New Zealand for guiding the design, construction, and use of buildings that are accessible to people with disabilities. With approximately 851,000 New Zealanders - 17% of the population - living with some form of disability, this standard plays a vital role in enabling inclusive environments.
A wide range of professionals - architects, engineers, designers, builders, government agencies, NGOs, and manufacturers - rely on it to inform building design and product development.
However, despite its widespread use, the standard is significantly out of date. Since its last revision in 2001, there have been major changes in how people interact with the built environment, such as:
- The rise of smart building systems and digital interfaces, such as mobile devices and voice-activated technologies.
- The integration of AI-based tools that improve accessibility, including speech-to-text and voice recognition systems.
- Remote and hybrid working practices that have reshaped how buildings are used.
- A growing demand for inclusivity, driven by both an ageing population and evolving societal expectations.
- A heightened emphasis on universal design and equity in access as a matter of human rights and public policy.
Despite these developments, NZS 4121:2001 does not reflect current technology, building practices, or user needs. It remains largely focused on physical impairments - particularly wheelchair access - while offering limited guidance for people with sensory, cognitive, or neurodiverse disabilities. Accessible design is critical for enabling disabled people to live independently and equally – a key principle in design is that good design for disabled people is good design for everyone.
Environmental scan and scoping exercise.
Whaikaha - Ministry of Disabled People has funded Standards New Zealand to conduct an international environmental scan comparing overseas accessibility standards with NZS 4121:2001 and host scoping workshops with the disability community, building regulators, and industry stakeholders.
The environmental scan looked at the strengths and limitations of NZS 4121:2001 compared with Australian, British, Canadian, European and US standards. This revealed both the similarities and differences that different nations across the world apply to accessibility. Geographic, cultural, building design and infrastructure differences were noted with many of the closest similarities to New Zealand’s needs found in the Canadian standard. New Zealand is willing to learn from the overseas standards considered by the environmental scan and adopt relevant provisions to better address accessibility needs of people with disabilities in Aotearoa.
You can read a full report of the environmental scan along, with alternate formats (audio, Braille, Easy Read, large print) of the executive summary, here:
Held in November 2025, these scoping workshops explored issues with the existing standard and options for updating it, including:
- Fully revising NZS 4121:2001.
- Replacing NZS 4121:2024 with a more current overseas standard.
- Adopting relevant overseas standards with or without changes.
Next steps
Since the environmental scan showed no international standard offered a clear solution that could be adopted outright, a revision is the expected route. This will allow the retention of things that work well, things that need improving and learnings integrated from those international standards that do most closely align with our built environment and New Zealanders’ needs. From here, the next steps will require formal commissioning to initiate the project.
Given the growing diversity of New Zealand’s disabled population and the ageing demographic, the relevance of NZS 4121:2001 is more critical than ever. An updated standard is essential to provide clear, inclusive guidance for designing accessible public environments that reflect today’s technologies, expectations, and values.