Accessibility Requirements for Class 1b Accommodation Buildings

What This Requirement Covers

This requirement sets out the accessibility obligations for Class 1b accommodation buildings under the National Construction Code (NCC) in Australia. Class 1b buildings are short-term or transient accommodation such as cabins in caravan parks, bed and breakfasts, guest houses, hostels and similar tourist accommodation. The accessibility provisions exist to ensure a reasonable level of access, sanitary facilities and egress for people with mobility limitations, and to protect public safety and amenity for occupants and emergency services.

The rules draw from NCC Volume Two (which covers Class 1 and 10 buildings) and relevant housing provisions, together with referenced Australian Standards where applicable. They apply to designers, builders, certifiers and owners of Class 1b accommodation and are intended to be applied alongside any state or territory schedules that modify national requirements. Compliance affects layout, door and corridor widths, ramps and steps, sanitary facilities, and safe egress.

Key Requirements

1. Building class: Class 1b accommodation (short-term residential accommodation such as cabins, caravan park units, bed and breakfast rooms) as defined in NCC Volume One - A6G2 and NCC Volume Two guidance.
2. Relevant documents and clauses:
3. - NCC Volume Two (Building Code of Australia Volume Two) - apply the provisions for Class 1 and Class 10 buildings and associated requirements where referenced (see relevant sections in Volume Two and definitions in NCC Volume One A6G2).
4. - NCC Volume One where classification guidance is needed: A6G2 (Class 1 and Class 1b definitions) and other cross-references in Volume One.
5. - Referenced Australian Standards where applicable for products and design details, for example AS 1428.1 (design for access and mobility - general requirements), AS 1428.2 (building elements such as tactile indicators and circulation), and other standards as cited by the NCC or state schedules. (Note: specific standards cited may vary by clause and state schedule.)

Specific dimensional and measurable requirements (where Volume Two or referenced NCC provisions apply or where Class 1b is required to meet elements of Volume One/other standards)

1. Door widths and circulation - Where the NCC or referenced standard requires access for people with disability (or where a non-complying performance solution is not adopted), provide a clear doorway width of minimum 820 mm clear for wheelchair access or as required by AS 1428.1 (typical requirement for new accessible doors). Confirm with the applicable NCC clause or state schedule for mandatory minimums applicable to the specific Class 1b proposal.
2. Ramp gradients - Where a ramp is required to provide step-free access, comply with AS 1428.1: maximum gradient 1:14 (preferred) for general access; where steeper allowable gradients are used, they must meet the detailed provisions of AS 1428.1 including landings and handrails.
3. Step nosing and riser dimensions - Steps should conform to common NCC/AS requirements for riser height and tread width (for example riser ≤ 190 mm, going ≥ 240 mm) where AS or NCC cross-references apply. Follow AS 1657 or AS 1428 provisions where specified.
4. Sanitary facilities - If the NCC or state schedule requires at least one accessible sanitary facility for the accommodation type, the fixture layout must comply with AS 1428.1 clearances and turning circles: provide a 1500 mm turning circle where a wheelchair turning area is mandated and the required grab rails, fixture clearances and door swings meet AS 1428.1 dimensions. Exact requirement depends on whether the specific building is required to provide accessible units under NCC or state rules.
5. Turning spaces in units - Where an accessible unit is required, provide wheelchair circulation and turning space complying with AS 1428.1 (typically 1500 mm diameter clear space or equivalent T-shaped space).
6. Thresholds - Thresholds at external doors should be level or ramped such that the change in level does not exceed 13 mm for unmarked thresholds or follow AS 1428.1 allowable tolerances.
7. Signage and tactile indicators - Where required (for example at communal entries or paths), provide signage and tactile ground surface indicators in accordance with AS 1428.4.1 and AS 1428 series requirements.

Citation examples in-text: as specified in NCC Volume Two, Section 3.1 and as defined in NCC Volume One - A6G2 (Class 1b definition). For access design detail, refer to AS 1428.1 (Design for access and mobility - General requirements) and AS 1428.4.1 (tactile indicators for orientation).

Note: The NCC does not treat every Class 1b building identically; requirements depend on factors such as whether the building is part of a larger development, the number of units, and any state schedule amendments. Where Volume One accessibility provisions for common areas or emergency egress apply (for mixed-class developments), those must be followed and are cited in relevant NCC clauses.

Residential vs Commercial

1. Class 1b buildings are classed as residential short-term accommodation and are regulated primarily under NCC Volume Two rather than the accessibility provisions set out for commercial buildings (Classes 2 to 9) in NCC Volume One. This means some commercial accessibility provisions that apply to Class 2-9 (for example, mandatory number of accessible sanitary facilities for large lodgings or public access requirements) do not automatically apply to Class 1b.
2. Commercial buildings (Class 2-9) typically have more prescriptive and higher-coverage accessibility obligations, including multiple accessible sanitary fixtures, accessible lifts where required, and formal accessible paths of travel mandated by NCC Volume One and referenced AS 1428 standards. Class 1b developments may only be required to provide accessible elements where Volume Two or state schedules require them, or where an owner elects to provide accessible units.
3. Where a Class 1b building forms part of a mixed-use development or shares common areas with Class 2-9 spaces, the relevant NCC Volume One accessibility clauses for those common areas can apply and higher commercial standards may need to be met.

Exceptions and Exemptions

1. Some Class 1b accommodations may be excluded from strict accessible unit requirements depending on the NCC Volume Two provisions, the number of units on site, and state or territory concessions. For example, small bed and breakfast operations or individual holiday cabins may not be mandated to provide a fully accessible unit unless specifically required by state schedule or local planning conditions.
2. Performance solutions are permitted under the NCC. Where prescriptive requirements cannot be met, a performance solution (with evidence and expert justification) may be accepted by the building surveyor or regulator demonstrating equivalent access outcomes.
3. Heritage buildings may be subject to exemptions or alternate solutions where full compliance would unacceptably affect heritage fabric. Any alternative must be justified and accepted by the approving authority.
4. State or territory building regulators may grant local exemptions or variations under their applicable legislation or schedules; always check the relevant state schedule in NCC Volume One (Schedules 4-12) for modifications.

State and Territory Variations

1. The NCC is national, but each state and territory may maintain a schedule that modifies or adds to NCC provisions. Examples to check in each jurisdiction:
2. - Queensland - Schedule 7 in NCC Volume One may contain specific provisions affecting short-term accommodation and accessibility; verify local planning or tourism codes for caravan parks and holiday accommodations.
3. - New South Wales, Victoria, Western Australia, South Australia, Tasmania, ACT, Northern Territory - each has its own schedule or local variations that can alter requirements for sanitary facilities, accessible units, and construction methods referenced in the NCC.

Always confirm the applicable state or territory schedule in NCC Volume One and any local regulatory instruments or planning conditions before finalising design or construction, because local amendments can change dimensional requirements or the trigger for providing accessible units.

Practical Compliance Tips

1. - Confirm classification early: document and confirm that the building is Class 1b under NCC Volume One - A6G2 before applying accessibility rules. Classification errors lead to incorrect compliance paths.
2. - Check state schedules: early in the project confirm any state or territory schedule amendments to the NCC; these often change whether an accessible unit is required and the level of detail you must apply.
3. - Plan at least one accessible unit where feasible: even if not mandated, providing one accessible unit designed to AS 1428.1 standards (including 1500 mm turning circle, door clearances, and accessible sanitary layout) avoids retrofit costs and improves marketability.
4. - Use the AS 1428 series for details: do not rely solely on high-level NCC statements for design dimensions. For door clearances, ramps, thresholds and sanitary fixture clearances, follow AS 1428.1, AS 1428.4.1 and related standards for exact measurable details.
5. - Pay attention to slippery surfaces, drainage and thresholds on external paths: even small changes in level or poor drainage create access barriers; ensure thresholds are ramped or eliminated to meet AS 1428.1 tolerances.
6. - Document performance solutions and accessible outcomes: where you adopt a performance solution, provide clear evidence, drawings and rationales showing equivalent access and safety outcomes to satisfy the certifier.
7. - Coordinate with local council/certifier early: because local planning conditions or tourism licensing can impose additional accessibility or bathroom provision requirements, engage the certifier or council early to avoid rework.

Sources: NCC Volume One - A6G2 (Class 1 and Class 1b definition); NCC Volume Two provisions for Class 1 buildings; AS 1428.1 and AS 1428 series for access and mobility requirements. Where state or territory variation may apply, consult the relevant state schedule in NCC Volume One (Schedules 4-12) and local building regulator guidance.