SIL vs SDA: Which NDIS Housing Support Is Right for You?

SIL and SDA are two of the most misunderstood funding categories in the NDIS. The short version: SIL (Supported Independent Living) pays for the support workers who help you live at home, while SDA (Specialist Disability Accommodation) pays for the physical building or dwelling that is designed for people with extreme functional impairment or very high support needs. Some people need one, some need the other, and some need both. This guide walks through each option clearly so you and your family can have an informed conversation with your planner or support coordinator.

If you are already working with a support coordinator and want to explore provider options, you can browse NDIS-registered providers in your area to get a sense of what is available near you.

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The quick comparison

This table is a starting point. The detail below will help you understand what each category actually means in practice.

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What is Supported Independent Living (SIL)?

SIL is funding that covers the cost of support workers who assist you with daily tasks in a shared or individual living arrangement. Think of it as paying for the people, not the place.

Support workers funded through SIL can help with:

• Personal care (showering, dressing, grooming)
• Meal preparation and eating
• Medication management
• Household tasks
• Overnight or 24-hour supervision if needed
• Building daily living skills over time

Who is SIL for?

SIL is designed for people who need a high level of daily support but who could live more independently with the right assistance. The NDIS Commission requires that SIL providers work with participants to build capacity where possible, not just maintain the status quo.

To be funded for SIL, you generally need to demonstrate that:

1. You require daily support with self-care or supervision.
2. Informal supports (family, friends) cannot reasonably meet all of those needs.
3. The cost of SIL is reasonable and necessary compared with alternatives.

SIL funding is usually worked out through a detailed support needs assessment and a quote submitted by your prospective SIL provider. It is not a simple line item in your plan - it requires a separate approval process with the NDIA.

How SIL is delivered

SIL is most commonly delivered in shared living arrangements where two to five participants live together and share the cost of support workers. However, individual SIL (sometimes called "solo SIL") exists for people whose needs or preferences make sharing unsuitable.

Your SIL provider is responsible for rostering staff, managing incidents, and maintaining the quality of support. They are regulated by the NDIS Commission and must meet the NDIS Practice Standards.

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What is Specialist Disability Accommodation (SDA)?

SDA is funding that contributes toward the cost of living in a purpose-built or significantly modified dwelling. It pays a contribution toward rent or accommodation costs - it does not cover support workers.

SDA-enrolled homes are built or modified to one of four design categories:

• Improved Liveability - features that improve amenity for people with sensory, intellectual or cognitive impairment.
• Fully Accessible - higher physical access standards for people with significant physical impairment.
• Robust - very strong construction and design features for people whose behaviour may cause property damage or who need a secure environment.
• High Physical Support - the highest level of physical access, including ceiling hoists, wider corridors, and home automation, for people with very high physical support needs.

Who is eligible for SDA?

SDA eligibility is more tightly restricted than SIL. The NDIS estimates that only around 6% of participants will qualify. To be considered, you generally need to have:

• Extreme functional impairment, or
• Very high support needs that cannot be met in standard housing

The NDIA assesses SDA eligibility as part of the planning process. A functional capacity assessment from an occupational therapist or other allied health professional is usually required to support an SDA request. The NDIS Commission and NDIA guidance both emphasise that SDA is not intended as a substitute for mainstream housing assistance.

How SDA funding works

If you are approved for SDA, the funding appears as a Capital line in your plan. You use it to pay a contribution toward your rent in an enrolled SDA dwelling. The SDA provider (the landlord or developer) must be registered and have their dwellings enrolled with the NDIS.

You still need to pay a Reasonable Rent Contribution (RRC), which is set at 25% of the Disability Support Pension plus Commonwealth Rent Assistance. SDA funding covers the gap between your RRC and the full SDA price.

Importantly, SDA does not pay for your support workers. If you live in an SDA dwelling and need daily support, you will usually also need SIL funding or another in-home support arrangement such as Individualised Living Options (ILO). You can learn more about ILO as an alternative arrangement on the Individualised Living Options page.

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Key differences that often confuse families

"Does SDA include support workers?"

No. This is the single most common misconception. SDA pays for the building. If you live in an SDA home and need support workers, that funding comes from a separate source - usually SIL, ILO, or other Core supports.

"Can I use SIL funding in my own home or a private rental?"

Generally, no. SIL is designed for shared or supported living arrangements managed by a registered provider. If you want in-home support in a standard rental or your own home, you would typically use Core - Daily Activities funding on a more flexible basis, or explore ILO.

"Do I have to live with other people?"

Not necessarily. Both SIL and SDA can be delivered in individual arrangements, though shared arrangements are more common because they spread costs. Your support coordinator can help you explore what is available in your area.

"Who chooses where I live?"

You do - or at least, you should have genuine choice and control. Providers are required to involve you in decisions about your living situation. If you feel your preferences are not being respected, the NDIS Commission has a complaints process.

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When to choose SIL, when to choose SDA, and when you might need both

This is the practical decision guide most families are looking for. Work through these questions with your support coordinator or planner.

Choose SIL if:

• You need daily or overnight support with personal care, supervision or skill-building.
• You are able to live in standard housing (including a regular rental) if the right support is in place.
• You do not have extreme functional impairment that requires purpose-built physical features.
• You want to live with others and share support costs.

Consider SDA if:

• You have extreme functional impairment or very high support needs that standard housing cannot accommodate.
• You need features like ceiling hoists, reinforced walls, automated doors, or very high physical access standards.
• An occupational therapist has assessed that standard housing is unsafe or unsuitable for you.
• You are currently in hospital, a nursing home, or another inappropriate setting and need a pathway to community living.

You may need both SIL and SDA if:

• You need to live in a purpose-built dwelling (SDA) AND require daily support workers (SIL).
• This is the most common arrangement for people with very high physical support needs or complex behaviour support needs.
• In this case, your plan would include both a Capital SDA line and a Core SIL line.

A practical checklist before your planning meeting

1. Get a functional capacity assessment from an occupational therapist.
2. Ask your support coordinator to document your current living situation and why it is not meeting your needs.
3. Gather evidence of any safety incidents, hospital admissions, or carer stress that demonstrates the urgency of your housing needs.
4. Research what SDA stock is available in your preferred location - supply is still limited in many regional areas.
5. Ask potential SIL providers for their approach to building participant capacity, not just maintaining support.
6. Review your draft plan carefully to confirm which funding lines have been approved.

Support coordinators play a critical role in this process. If you are a coordinator helping a participant navigate SIL and SDA options, the support coordinator workspace on OpenWay is designed to help you shortlist providers, share options with participants, and track enquiries in one place.

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Common myths about SIL and SDA

Myth: SDA is only for people in wheelchairs. Not true. The Robust design category, for example, is specifically designed for people whose behaviour of concern may cause property damage. Intellectual disability, autism, and acquired brain injury can all be relevant.

Myth: You lose your SIL funding if you move. Your funding is attached to your plan, not to a specific address or provider. You can change SIL providers, though the transition process requires careful planning and a new quote.

Myth: The NDIS will find you a home. The NDIA approves funding. Finding an actual SDA dwelling or SIL vacancy is a separate process that you, your family, and your support coordinator need to manage. This is where a marketplace like OpenWay can help you see what is actually available. You can read about how OpenWay works and who we are to understand our role in that process.

Myth: SIL means you have no privacy. Good SIL providers design rosters and house rules that protect your privacy and dignity. The NDIS Practice Standards require providers to actively support your rights, including the right to privacy in your own home.

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Frequently asked

Can a family member be my SIL provider or support worker? In limited circumstances, yes. The NDIS has rules about funding informal supports, and family members are generally not funded to provide SIL unless there are exceptional circumstances and the arrangement is approved by the NDIA. Your planner can advise on whether an exception applies in your situation.

How long does it take to get SDA approved? SDA approval can take several months, particularly if the NDIA requests additional evidence or if there are delays in getting functional capacity assessments completed. Starting the evidence-gathering process early - ideally before your planning meeting - significantly improves outcomes. If your situation is urgent, ask your planner about an unscheduled plan review.

What happens if I am unhappy with my SIL provider? You have the right to change providers. Your support coordinator can help you find alternatives and manage the transition. If you have concerns about the quality of support or a potential rights issue, you can raise a complaint directly with the NDIS Commission. It is worth knowing that checking a provider's registration and any compliance history is part of OpenWay's trust and safety approach.

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How OpenWay can help

Navigating SIL and SDA options is one of the most complex tasks in the NDIS, and finding providers with actual vacancies in your area makes it even harder. OpenWay is a free-to-use marketplace where participants, families and support coordinators can browse verified NDIS providers, filter by support type and location, and send enquiries directly to providers.

If you are a support coordinator managing multiple participants with housing needs, the OpenWay coordinator tools let you shortlist providers, share options with participants and their families, and keep track of where enquiries are up to - all without the back-and-forth of email chains.

OpenWay does not deliver supports, manage NDIS funds, or make placement decisions. We simply make it easier to find and compare providers so you can make informed choices.

OpenWay is not part of the NDIS, NDIA or NDIS Commission. Final scope, pricing, travel, cancellation rules and non-face-to-face charges must be confirmed in a written service agreement between the participant (or their authorised support person) and the provider.