Choosing the right home and support can change everything. SIL and SDA are two familiar acronyms in Australia’s disability sector, and they are often used together in conversation. But they answer different questions.
One is about the building you live in. The other is about the support you receive inside that building. This guide explains the difference, who they suit, how funding works, and what to look for when you and your family are planning supports.
If you want local help exploring options, Premier Care Connect (PCC) offers advice and provides services. Visit us to see how we can help with planning and access to home and living supports.
The short answer
SDA stands for Specialist Disability Accommodation. It is funding for specially designed housing with features that make daily life safer and more independent for people with very high support needs. SDA pays for aspects of the dwelling itself, not the day-to-day care.
SIL stands for Supported Independent Living. It pays for paid staff who help with daily living tasks such as personal care, meal preparation, or supervision. SIL is about the human supports that allow someone to live in a house or unit, often shared with other participants.
Why the distinction matters
Confusing the two can lead to the wrong expectation about what your plan covers. For example, a home might be SDA approved and very accessible, but SDA funding will not pay for waking-night staff, meal preparation, or assistance with showering.
Those supports are covered under SIL or other parts of your NDIS plan. Conversely, having SIL in your plan does not guarantee you live in an SDA dwelling; SIL can be provided in regular private rental or in specialist housing.
Who is SDA for?
SDA is targeted at people with extreme functional impairment or very high support needs where the physical environment itself makes a material difference to safety, independence, or the delivery of supports.
The NDIA assesses whether SDA is necessary by looking at how modifications or a purpose-built dwelling will meet the person’s needs compared with other supports. If eligible, SDA is funded as part of the Capital Supports Budget, meaning it contributes to the cost of the dwelling rather than ongoing staff support.
Typical examples of SDA features include:
• wheelchair accessible layouts and lifts where required
• reinforced walls and ceilings to support hoists
• specialised bathroom design that supports complex personal care
• single bedroom apartments with private living and care access where needed
Living in SDA usually means fewer people sharing a home and more focus on the dwelling’s features than the unit’s rostered staff.
Who is SIL for?
SIL suits people who need a significant level of assistance across daily life tasks, often around the clock. It is about staffing and how that staffing is organised to meet a participant’s support needs.
SIL can be arranged in a variety of dwellings. In many cases, SIL supports are delivered in shared supported homes, but they can also be provided in individual apartments or family homes. SIL funding can cover things such as morning and evening personal care, meal preparation, and overnight supervision.
SIL is best for participants who require regular, reliable paid supports to live safely and develop independence. The operational guidelines describe how SIL is assessed and funded.
Funding differences explained simply
Think of funding like two separate wallets in an NDIS plan.
SDA is a capital budget item. It helps cover the cost of a dwelling that has specific design features. It is not flexible for day to day support needs.
SIL is part of the Core Supports budget where supports are paid for time, staffing and supervision. SIL covers the people costs that enable someone to live in their home.
This separation matters when reviewing plans or appealing decisions. You may be eligible for one, both, or neither, depending on the NDIA assessment of your functional needs and living goals.
How eligibility is decided
Eligibility for SDA requires evidence that the physical design will reduce risk or enable independence that cannot be achieved through other supports. The NDIA will look at functional assessments, allied health reports and how the dwelling will work alongside other supports.
SIL eligibility is determined by the level and consistency of support you need. Operational guidelines and pricing arrangements outline how SIL budgets are calculated and what providers should include in their support offers. Families and participants should read the SIL guidelines and discuss with planners.
What to look for in a home and a support provider
For the home, check accessibility, safety features, travel and community access, and how private or shared spaces are configured. For providers, ask about staff training, continuity of care, medication management, and how they support skill building and community participation.
If you would like support with assessing housing options or finding a compatible provider, PCC can help with planning conversations and connecting you to suitable SIL and SDA providers. See our range of services for more information.
SDA and SIL answer different but related questions. SDA is about the physical environment. SIL is about the people who support everyday living. Getting the balance right can improve safety, autonomy and quality of life. Keep assessments, reports and goals clear when you talk to the NDIA. And when you are ready, talk to experienced providers who can translate funding and rosters into a stable, comfortable home.