Guide

SIL vs SDA — the two most confused acronyms in NDIS housing

SDA is the dwelling. SIL is the support delivered inside it. This page compares the two funding streams so you know which one you're actually looking for.

Side-by-side comparison

 SDASIL
What it fundsThe dwelling — building, accessibility features, capital costs.The daily support workers who help you live in your home.
Who it's forExtreme functional impairment or very high support needs, as assessed by the NDIA.Participants needing ongoing daily support to live independently.
Paid toThe SDA provider (dwelling owner or manager).The SIL provider (support organisation).
Where it appliesOnly in NDIS-enrolled SDA dwellings.In any suitable dwelling — SDA, rental, community housing, family home.
Choice of providerYes — subject to available vacancies in enrolled dwellings.Usually yes; in shared homes, changes require household alignment.

What to do next

  • If SDA is in your plan — focus on finding a dwelling that matches your funded design category.
  • If only SIL is in your plan — look at mainstream, community or ILO housing that fits your budget, then arrange SIL there.
  • If neither is in your plan — talk to your support coordinator or planner about a Home & Living request.

Frequently asked questions

Can I get SIL without SDA?
Yes. SIL can be delivered in a mainstream rental, community housing, a family home or any other suitable dwelling. Many SIL participants are not in SDA homes.
Can I get SDA without SIL?
Yes. Some SDA participants don't need daily support workers, or use only limited support hours. SDA funding is about the dwelling, not the support hours.
If I live in an SDA home with housemates, do we all have to use the same SIL provider?
In practice, almost always yes — one SIL provider covers the household. You still keep choice, but changing SIL provider usually requires the household and the SDA provider to be aligned.
Who decides my SIL and SDA funding?
Both are NDIS decisions made by the NDIA, informed by assessments and reports (typically including a Home & Living request). A housing platform can't approve either.

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