SDA design categories: which one fits your needs?

By SDA Listings Editorial · 3 July 2026 · 8 min read

Improved Liveability

Suited to participants with sensory, intellectual or cognitive impairment. Features include high contrast between surfaces, clear sightlines, sensory-friendly lighting and improved acoustics. Many modern group homes fall into this category.

Fully Accessible

For people with significant physical impairment who use a wheelchair most of the time. Features include level thresholds, wider doorways (typically 950 mm+), reinforced bathroom walls and accessible kitchen heights.

Robust

Built to withstand behaviours of concern. Features include impact- resistant walls, secure fixtures, safe exits and privacy for neighbours. The design also protects the participant from self-injury.

High Physical Support

The highest specification. Ceiling hoist structural provision, emergency backup power, assistive technology cabling, generous bathrooms and often on-site overnight assistance (OOA) rooms. Suited to participants with complex physical needs.

Choosing between them

The NDIA determines which category your plan funds. If you have flexibility, weigh long-term needs, not just today's. A young participant with a progressive condition may benefit from applying under a higher category.

Compare vacancies in each category on Improved Liveability, Fully Accessible, Robust and High Physical Support.

Building types within each category

Each category can be delivered as a house, apartment or villa/townhouse. Building type affects price and community feel — apartments suit central locations; houses suit suburbs and shared living.