Disability Access Design for New Homes in Tasmania

Since 1 October 2023, new Class 1a homes in Tasmania must meet the NCC 2022 Livable Housing provisions — a Silver-standard accessibility baseline covering step-free entry, wider doorways, and accessible bathroom design. This guide explains what the minimum requires, how to go further, and how a custom build is the right moment to design a home that works across every life stage.

What the NCC 2022 Livable Housing Provisions Require

The Livable Housing Design provisions in Volume Two of the National Construction Code 2022 are based on the Silver level of the Livable Housing Design Guidelines (LHDG), published by Livable Housing Australia. They became mandatory for Class 1a buildings (standalone houses) on 1 May 2023, with a 1 October 2023 phase-in date for full compliance in Tasmania. Every new home lodged for building permit after that date must meet all four key elements:

• Step-free entry: At least one step-free entry point to the dwelling must be provided. The path from the street or parking area to that entry must be continuous, firm, and slip-resistant. Where the site falls, the path may need to be ramped — the gradient requirement is 1:14 maximum (gentler than the 1:20 required under AS 1428.1 Gold level).
• Wider doorways: Internal doorways must provide a minimum 820 mm clear opening width on the step-free entry path and throughout key circulation routes. This accommodates most standard wheelchairs and mobility aids. Standard 820 mm door sets typically achieve this with a standard door frame — it is not a special-order item in a new build.
• Accessible bathroom: At least one bathroom must comply with the Livable Housing Design Guidelines Silver-level bathroom provisions. This includes: a shower recess with no hob or lip (a flush, step-free shower), reinforced walls adjacent to the shower and toilet capable of supporting grab bar installation to 740 kg, and sufficient floor area for wheelchair manoeuvring (typically 900 × 900 mm turning circle clear of the shower recess).
• Accessible toilet: The compliant bathroom must include a toilet with 800 mm clear to one side and adequate space for a person to transfer. This is typically satisfied in a standard ensuite design with careful placement of the toilet and vanity.

These provisions are the mandatory minimum. They do not require full wheelchair accessibility throughout the home, automatic doors, or kitchen adaptations. They are a baseline — and in a custom home, building to the minimum is rarely the right call if aging-in-place or multigenerational living is relevant to your family.

Silver vs Gold vs AS 1428.1 — Understanding the Levels

The Livable Housing Design Guidelines use a three-tier framework (Silver, Gold, and Platinum). The NCC 2022 mandates Silver. Understanding the three tiers helps you decide how far to go in your custom home:

• Silver (mandatory from 1 October 2023): Step-free entry, 820 mm clear doorways, reinforced bathroom walls, flush shower. Designed to make a home easily adaptable — not fully accessible from day one, but capable of being retrofitted without structural work. Most homes built to Silver require minimal adaptation for a wheelchair user in an emergency.
• Gold (LHDG — voluntary): Adds wider circulation paths (1,000 mm clear corridors), a second reinforced bathroom, and accessible kitchen bench heights. Requires slightly more floor area but not dramatically so in a well-planned custom design. Suitable for households with a known mobility requirement now or anticipated within the next 5–10 years.
• Platinum (LHDG — voluntary): Full ambulant and wheelchair design throughout the home, including kitchen, laundry, and all bathrooms. This approaches AS 1428.1 standard and is typically specified for NDIS participants or households where full wheelchair access is required from day one.
• AS 1428.1:2009 (the full accessibility standard): The Australian standard for design for access and mobility, referenced by the Disability Discrimination Act. It specifies turning circles, reach ranges, door hardware, and other details well beyond the LHDG Silver level. Class 1a homes are not required to comply with AS 1428.1, but a custom builder can design to it on request. It requires more floor area and more considered planning of the entire circulation network.

Universal Design: Beyond Accessibility

Universal design is broader than disability access. It is the design of spaces, products, and environments that are usable by all people, to the greatest extent possible, without the need for adaptation or specialised design. In a residential context, this means considering:

• Young children and prams: The same step-free paths and wider doorways that accommodate a wheelchair also make daily life easier with a pram, a trolley, or shopping bags. Level-entry showers eliminate the trip hazard that a shower hob creates for tired parents and young children.
• Temporary injury: A broken leg, a hip replacement, or recovery from surgery makes a step-free, wide-circulation home dramatically more manageable. Features designed for permanent disability serve this purpose equally well.
• Aging in place: Tasmania has one of Australia's oldest median age populations. The ability to remain in the family home as mobility changes — without the disruption and cost of a move or a major renovation — is a significant financial and lifestyle benefit. A home designed with LHDG Gold-level features from the outset is an investment in 20–30 years of future livability.
• Multigenerational living: Many Davies clients are building for parents or adult children to share a home. A secondary suite or granny flat designed to Silver or Gold standard means it works for an elderly parent with a walking frame as well as for a young adult.

Key Design Elements to Consider in a Custom Home

A custom home is the ideal vehicle for universal design — the decisions are made at design stage, before construction begins, when changes cost nothing. Retrofitting these same features post-construction can cost many times more. Key elements to discuss with your designer and builder:

• Single-level or step-free main suite: A master bedroom and ensuite on the ground floor — with no internal steps between entry, living, and sleeping — is the most impactful universal design decision. Two-storey homes can include a lift-ready shaft (a linen cupboard or storage cavity stacked on two levels, framed for a future lift installation) for minimal cost during construction.
• Reinforced bathroom walls: Structurally reinforced walls beside the toilet and shower (typically 18–19 mm plywood behind the wall lining, capable of supporting 740 kg) cost very little in a new build and allow grab bars to be installed anywhere along the reinforced zone. Without them, grab bar installation requires a wall specialist and is significantly more invasive.
• Lever handles throughout: Lever-style door hardware is easier for everyone — young children, people carrying loads, older adults with reduced grip strength — and is included as standard in most contemporary custom home specifications. Round knobs are the harder ergonomic choice.
• Flush thresholds at all external doors: Eliminating the threshold lip at external entries and sliding door tracks prevents trip hazards and accommodates wheeled devices. This is a standard item in a quality Tasmanian build but worth confirming at specification stage.
• Rocker-style light switches at 900–1,100 mm height: Standard switch height in Australian residential construction is 900 mm from finished floor level — already within the LHDG Silver recommended range. A custom builder can confirm this is consistent throughout the home.
• Kitchen adaptability: The LHDG Gold level recommends that at least one section of kitchen bench be designed at a height suitable for a seated user, or be height-adjustable. In a standard kitchen, this can be achieved with a lowered section (750–800 mm bench height vs. the standard 900 mm) at the end of an island or peninsula, with clear knee space below.

Site Considerations for Accessible Design in Northern Tasmania

Northern Tasmania's rural and semi-rural building lots often present site challenges that affect accessible entry design:

• Sloping sites: On a sloping lot, achieving a step-free path to the entry may require a longer driveway, a ramp (maximum 1:14 gradient for LHDG Silver, 1:20 for AS 1428.1), or siting the home at a level that allows a flat approach from the car parking area. This is a site planning decision made at design stage — the NCC 2022 does provide for an alternative solution if a site genuinely cannot accommodate a compliant pathway, but this should be a last resort and requires a building surveyor assessment.
• Garage integration: An internal-access garage provides a weatherproof, step-free entry path that also simplifies accessible entry for wheelchair users and mobility aid users. The garage entry into the house must also be step-free and meet the 820 mm clear doorway requirement.
• Outdoor living: Alfresco areas, decks, and outdoor kitchen spaces on sloping sites often involve a step down. Consider a flush threshold with a level outdoor deck or, where there is a level change, a ramped path to the alfresco area for a genuinely usable accessible outdoor living space.

Cost of Universal Design in a New Home

The cost of building accessibility features into a new home is substantially lower than retrofitting them later. Common estimates used in the industry:

• LHDG Silver compliance in a new build: Generally negligible additional cost for a home already designed by an architect or designer — the features are incorporated at design stage with no structural changes from what would otherwise be built. The main cost is a flush shower recess (no hob) over a standard hobbed shower base, which is minimal.
• Upgrading to LHDG Gold: Wider corridors (typically 900–1,000 mm vs. standard 820 mm clear) and a second reinforced bathroom add modest floor area. On a per-square-metre basis, this is the most efficient time to include these features.
• Lift shaft provision: Framing a void (approx. 1,200 × 1,400 mm) through two levels for a future lift costs typically a few hundred dollars in framing and a linen cupboard at each level. The actual lift installation can be deferred until needed. Retrofitting a lift shaft after construction is significantly more expensive and disruptive.

For information on how accessible design choices interact with your overall build budget, see our pricing guide for new homes in Tasmania.

Frequently Asked Questions

Are the NCC 2022 Livable Housing provisions mandatory in Tasmania?

Yes. The NCC 2022 Livable Housing provisions apply to all new Class 1a buildings (standalone houses) in Tasmania. They came into force on 1 May 2023 with a compliance phase-in from 1 October 2023. Any new home lodged for building permit after that date must include a step-free entry, 820 mm clear doorways on the accessible path, and at least one compliant bathroom with reinforced walls and a flush shower recess.

What is the difference between Livable Housing Design Silver and AS 1428.1?

The LHDG Silver level (mandated by NCC 2022) is a lower-bar adaptable design standard — it ensures a home can be easily modified for accessibility without structural changes. AS 1428.1:2009 is the full Australian standard for access and mobility, specifying turning circles, reach ranges, and other provisions for independent wheelchair use throughout a building. Class 1a homes are not required to comply with AS 1428.1, but a custom builder can design to it on request for clients who require or prefer full wheelchair-accessible design throughout the home.

Do I need NDIS funding to include accessible features in my new home?

No. Any owner can choose to include accessible design features in a new home regardless of NDIS funding. NDIS participants building or modifying a home may be eligible for Specialist Disability Accommodation (SDA) funding for highly specialised accessibility features — but this is a separate NDIS funding pathway relevant only to eligible participants. Standard accessible design features like reinforced bathroom walls, lever handles, and flush showers are included by owner choice and funded as part of the build contract.

Can a sloping site in Northern Tasmania comply with the NCC 2022 step-free entry requirement?

In most cases, yes — through careful siting of the home and the use of a ramped or graded path (maximum 1:14 gradient). For very steep lots, the NCC 2022 does provide an alternative solution pathway if compliance is genuinely not achievable, subject to building surveyor assessment. This situation is rare in Northern Tasmanian residential subdivisions but can arise on rural acreage blocks with significant fall across the building footprint. Discuss your specific site with your builder and building surveyor at design stage.

Does universal design make a home look institutional?

No — modern universal design is invisible. A flush shower recess is standard in contemporary Tasmanian new homes and is preferred aesthetically by most clients regardless of accessibility. Lever handles, wider doorways, and continuous flooring are all consistent with contemporary residential design. The features that make a home more accessible are the same features that make it more considered, more livable, and less dated over time.

Building an Accessible Home in Northern Tasmania

Whether you are building for a specific accessibility requirement or simply designing a home that will work for your whole family across every life stage, the decisions you make at design stage have far more leverage than any retrofit later. Reinforced walls, lift shaft provision, accessible bathroom layout, and step-free circulation cost a fraction of what they cost to add retrospectively — and they add no visible compromise to the finished home.

Davies has been building custom homes in Northern Tasmania since 2009. Talk to our team about designing an accessible or universally designed home — or read our post on the custom home building timeline in Tasmania to understand how these design decisions fit into the project sequence.