NDIS SDA: Specialist Disability Accommodation.
You are providing SIL inside an SDA dwelling. You have two providers, two billing streams, two budgets — and your claims keep landing in the wrong one. SDA is the bricks: the specialist dwelling itself, funded under Capital and paid to the housing provider. SIL is the support: the workers inside it, funded under Core and paid to you. The two sit on the same participant, in the same home, and they are claimed entirely separately.
SDA (Specialist Disability Accommodation) is NDIS Capital funding for specially designed housing for participants with extreme functional impairment or very high support needs. It pays for the dwelling itself — not the workers inside it. Only a small proportion of participants are funded for SDA, and it must be specifically included in their NDIS plan.
What SDA is
Specialist Disability Accommodation is NDIS funding for housing that is specially designed, or higher-cost, to suit people with very significant needs. It is about the dwelling itself — features like wider doorways and corridors, reinforced ceilings for hoists, robust and durable construction, or the assistive technology built into the fabric of the home.
Crucially, SDA pays for the building, not the support. It does not pay for the workers who help with daily life, and it does not cover the everyday living costs — rent contribution, board, electricity, groceries — that any tenant pays. Think of SDA as the specialist home, with the support and the living costs funded and paid for separately.
SDA is one of the smaller, more specialised parts of the NDIS. Only a small proportion of participants receive it, because it is reserved for those whose housing genuinely needs to be built or modified to a specialist standard.
How SDA is funded
SDA sits in the Capital Supports budget of a participant's NDIS plan — not the Core budget that pays for day-to-day support. It is provided as a stated amount tied to an approved SDA type: a combination of a design category (below) and a building type (for example, a house, an apartment, a villa, or a group home).
The funding is paid to the SDA (housing) provider as a contribution toward the cost of providing that specialist dwelling — separately from the support a person receives. The participant also pays a reasonable rent contribution toward their housing, in line with the NDIA's rules. It helps to see the three pieces as distinct:
The home — funded by SDA
The specialist dwelling itself, funded under the Capital budget and paid to the SDA (housing) provider.
The support — funded separately
The workers who help with daily life, usually funded under Core — often as SIL — and paid to the support provider, who may be a different organisation entirely.
Everyday living costs — paid by the participant
Rent contribution, board, utilities, and groceries — the ordinary costs of living that the NDIS does not cover, paid by the participant.
The four SDA design categories
Every SDA dwelling is enrolled against a design category that reflects the level and type of accessibility built into it. A participant's plan states which category their SDA funding is for, and it has to match the home they live in.
Improved Liveability
Housing with better physical access and improved provision for people with sensory, intellectual, or cognitive impairment — features such as improved physical access, clear lines of sight, and easier way-finding around the home.
Fully Accessible
Housing with a high level of physical access provision for people with significant physical impairment — designed so someone using a wheelchair or other mobility aids can move through and use the home independently.
Robust
Very durable, resilient housing built to reduce the risk of damage and reactive maintenance, and designed to be safe for the resident and the people around them — suited to participants who need a particularly hard-wearing and secure environment.
High Physical Support
Housing with a very high level of physical access provision for people who need a lot of support — incorporating features such as structural provision for ceiling hoists, emergency power backup, height-adjustable fittings, and provision for assistive technology.
The design categories, the building types, and the prices attached to them are all set by the NDIA and reviewed from time to time — so the current detail should always be checked against the NDIA's published SDA pricing and design standard.
Who is eligible for SDA
SDA is for a small group of participants — not a mainstream support. To receive it, two things have to be true:
- —SDA must be in the participant's plan — it is only available if the NDIA has specifically included SDA funding in that person's plan
- —The person must meet strict needs criteria — generally extreme functional impairment or very high support needs, established through assessment
The NDIA decides whether SDA is reasonable and necessary, drawing on evidence and a housing needs assessment. Because the threshold is high, most participants are not funded for SDA — their housing needs are met in other ways, such as the private rental market, social housing, or home modifications funded under a different part of their plan.
Whether a particular person qualifies, and which design category and building type their funding covers, is a matter for the NDIA and the participant's planning process — not something a provider determines.
SDA vs SIL — the key distinction
SDA and SIL are constantly confused, because they often apply to the same person living in the same home. The simplest way to keep them straight: SDA is the bricks and mortar; SIL is the support delivered inside it. A participant can have both — frequently from two different providers. If you deliver the support side, NDIS provider software helps keep the two billing streams cleanly separated.
| Aspect | SDA | SIL |
|---|---|---|
| What it funds | The dwelling — the specialist home itself | The support — workers who help with daily life |
| Budget | Capital Supports | Core Supports |
| Who is paid | The SDA (housing) provider | The support provider |
| Provided by | Often a specialist housing provider | A disability support provider |
| Does not cover | Support hours, rent contribution, groceries | The building, rent contribution, groceries |
Because they are funded, quoted, and claimed separately, the two can also exist independently. A person can receive SDA without SIL (they own the specialist home but arrange support another way), or SIL without SDA (they receive intensive support in ordinary housing). For more on the support side, see our SIL guide.
Confirm the current SDA rules with the NDIA
SDA eligibility, the design categories and building types, and the prices attached to them are all set by the NDIA and change over time. This guide is general information, not advice. Always confirm current eligibility criteria, design standards, and pricing against the NDIA's published guidance and the current NDIS SDA pricing and payments material, or seek help from an SDA specialist before making any housing decisions.
For NDIS providers using practice management software
Rostrel handles the support side of SDA homes — not the property or tenancy management. When your workers deliver SIL or other funded supports inside an SDA dwelling, Rostrel generates the correct NDIS claims against the participant's Core budget, rostered and priced to SCHADS award rates, entirely separately from the Capital-funded SDA arrangement. This keeps the two funding streams clean and ensures your support claims are linked to the right participant plan and support category without manual cross-referencing.
Frequently asked questions
What is NDIS SDA (Specialist Disability Accommodation)?
SDA is NDIS funding for housing that is specially designed, or higher-cost, for participants with extreme functional impairment or very high support needs. It pays for the dwelling itself — the bricks and mortar — not the day-to-day support delivered inside it. SDA funding is paid to the SDA (housing) provider, separately from the support that helps the person live there.
Who is eligible for SDA?
SDA is for a small group of participants. To receive it, SDA must be included in the participant's NDIS plan, which generally requires meeting strict criteria — extreme functional impairment or very high support needs — and going through a needs assessment. The NDIA decides whether SDA is reasonable and necessary. Most participants do not receive SDA, and confirming eligibility is a matter for the NDIA and the person's planning process.
How is SDA funded?
SDA is funded under the Capital Supports budget in a participant's NDIS plan, and is stated against an approved SDA type — a combination of design category and building type. The funding is paid to the SDA (housing) provider as a contribution toward the cost of the specialist dwelling. It is kept separate from the Core or other budgets that pay for everyday support. Participants also contribute a reasonable rent amount toward their housing.
What are the SDA design categories?
There are four SDA design categories: Improved Liveability (better physical access and provision for people with sensory, intellectual or cognitive impairment), Fully Accessible (a high level of physical access for people with significant physical impairment), Robust (very durable, resilient housing that is safe for the resident and others), and High Physical Support (a very high level of access with provisions such as ceiling hoists and emergency power for people who need extensive support).
What is the difference between SDA and SIL?
SDA is the bricks-and-mortar housing — the specialist dwelling itself, funded under Capital and paid to the housing provider. SIL (Supported Independent Living) is the day-to-day support delivered to help the person live in that home — the workers, funded under Core. A participant can have both, often from different providers: SDA for the building and SIL for the support inside it. They are funded, quoted, and claimed separately.
Software for the support, not the property
Rostrel isn't SDA or property software — it won't manage dwellings, tenancies, or SDA payments. What it does is the support side of an SDA home: rostering the workers, capturing case notes, generating claims, and exporting SCHADS-correct payroll for the SIL or other support delivered inside. If that's the part you're trying to get right, we'd be glad to show you how.
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