Co-living vs NDIS, dual-key and Airbnb: which high-yield strategy?

Answering: Co-living vs NDIS, dual-key and Airbnb: which high-yield strategy?

Estimated reading time: 8 min read

There is no single best high-yield property strategy, because co-living, SDA (Specialist Disability Accommodation under the NDIS), dual-key and short-stay (Airbnb) each earn their yield in a different way and carry a different mix of management, compliance and vacancy risk. The right answer depends on how much complexity you want to hold and which risks you are equipped to manage. Based on The Harmony Group team’s experience across more than 200 delivered projects, purpose-built co-living has produced a historical average gross yield of 10.8 per cent with occupancy held above 98 per cent, which is one reference point among the four strategies compared below rather than a verdict on the others.

If you are weighing these options, the marketing around each can make them sound interchangeable, and they are not. A strategy that suits a hands-on investor near a tourist strip may be wrong for someone who wants a long-term residential tenant and minimal involvement.

The reality is that yield is only half the picture. What matters is yield after you account for the work, the regulation and the chance of an empty property. This guide lays the four strategies side by side, explains what each really demands, and helps you see which suits whom.

The Harmony Group focuses on purpose-built co-living and works alongside your own advisers, so the comparison here is layered and neutral rather than a sales pitch for one path.

Key Insights

• The four strategies earn yield differently: co-living from multiple rooms in one dwelling, SDA from a government pricing framework, dual-key from two tenancies under one title, and short-stay from nightly tourist rates.
• SDA is a distinct third-party investment category that serves NDIS participants with extreme functional impairment or very high support needs, and the NDIA does not guarantee returns; income depends on an eligible participant living in the dwelling.
• Across The Harmony Group team’s 200-plus purpose-built co-living projects, the historical average gross yield has been 10.8 per cent with occupancy above 98 per cent, assessed through a 118-point framework.

Keep reading for full details below.

Table of Contents

• Co-Living vs SDA vs Dual-Key vs Short-Stay: The Comparison
• What Each Strategy Really Demands
• Which Strategy Suits Whom

Co-Living vs SDA vs Dual-Key vs Short-Stay: The Comparison

The table below sets the four strategies side by side across the six factors that actually shape your return. Read it as a map of trade-offs, not a ranking. Each column carries strengths and demands, and the strategy that fits depends on your circumstances. Figures attributed to The Harmony Group are historical team results and may not be repeated; figures for other categories are general and depend on the property, location and framework involved.

Factor	Purpose-built co-living	SDA / NDIS housing	Dual-key	Short-stay (Airbnb)
What drives the yield	Multiple private rooms let individually in one purpose-built dwelling, so rent comes from several tenants rather than one	A government pricing framework: SDA payments plus a capped tenant rent contribution, set by the NDIA for eligible dwellings	Two self-contained tenancies under one title, producing two rents from a single property	Nightly tourist or business-traveller rates, which can exceed long-term rent in peak periods
Management intensity	Higher than a single tenancy; specialist room-by-room management, handled by a manager in the model Harmony uses	Specialist; involves SDA enrolment, provider agreements and participant-suited dwellings	Moderate; two tenancies to fill and maintain, but conventional residential management	High and ongoing; cleaning, turnovers, guest communication and platform management
Compliance burden	Class 1B certification and building standards designed in from the start	Substantial; SDA enrolment, design-category rules and the NDIS pricing framework	Standard residential building and tenancy rules	Rising; in Victoria a 7.5% short-stay levy, registration, night caps and owners-corporation bans may apply
Vacancy / tenant risk	Spread across several rooms, so one vacancy is a fraction of income, not all of it	Concentrated; no income if an eligible participant is not living in the dwelling	Two tenancies reduce the all-or-nothing risk of a single let	Seasonal and demand-driven; income can swing sharply between peak and off-peak
Financing	New-build, 1B-certified asset assessed against standards lenders recognise	Specialist lending; valuations tied to the SDA framework rather than standard comparables	Generally financed as a standard residential dwelling	May attract commercial or short-stay lending treatment depending on use
Resale	Sells as a residential dwelling and as an income-producing asset	Narrower buyer pool tied to SDA investors and the framework	Broad residential buyer pool, including owner-occupiers	Saleable as a standard dwelling, though value may reflect changing short-stay rules

A clear pattern emerges. Co-living and dual-key both spread tenant risk across more than one income source, while SDA and short-stay concentrate it in different ways. You can explore the underlying numbers further in this side-by-side comparison of co-living, NDIS, dual-key and residential returns.

What Each Strategy Really Demands

Purpose-built co-living earns its yield from several private rooms let individually within one dwelling, which is why one empty room is a fraction of your income rather than the whole of it. In return it asks for specialist room-by-room management and Class 1B certification, both designed into a new build from the outset. The Harmony Group’s model handles the management and applies a 118-point analysis to each site, declining roughly 85 per cent of those assessed.

SDA is a distinct investment category, not a Harmony product. According to the NDIS, SDA is housing for participants with extreme functional impairment or very high support needs, and the income comes from a government framework: SDA payments combined with a capped reasonable rent contribution from the participant. Importantly, the NDIA and the Australian Government do not guarantee, back or assure SDA returns, and an owner receives no income when an eligible participant is not living in the dwelling. It is a specialist path with its own enrolment, valuation and tenant considerations, which is why neutral comparison matters. You can read more on the different risk profiles of co-living and SDA in Melbourne.

Dual-key splits one title into two self-contained tenancies, producing two rents and softening the all-or-nothing risk of a single let, while remaining conventional residential property to manage, finance and resell. Short-stay (Airbnb) can produce strong nightly rates, but it is the most hands-on of the four and faces a tightening rulebook. In Victoria a 7.5% short-stay levy has applied since 1 January 2025 to stays under 28 days, night caps apply in some councils, and owners corporations can vote to ban short stays altogether. The trade-off is higher potential income against higher work and regulatory exposure, as set out in this look at co-living compared with Airbnb in Melbourne.

• Match each strategy’s management load to how involved you actually want to be.
• Read SDA strictly as a third-party category with framework-dependent, non-guaranteed returns.
• Check current short-stay levy, registration and night-cap rules for the specific council before relying on Airbnb income.

Which Strategy Suits Whom

If your priority is income that does not collapse when one tenant leaves, a model that spreads rent across several rooms or tenancies tends to suit you better than one resting on a single income source. Co-living and dual-key both work this way, with co-living adding higher historical yield in exchange for specialist management, and dual-key offering a simpler, broadly conventional path with two rents.

If you are drawn to the social purpose of disability housing and are prepared for a specialist, framework-dependent investment, SDA may warrant a closer look, undertaken with independent advice and a clear understanding that returns are not guaranteed and depend on an eligible participant occupying the dwelling. If you are hands-on, comfortable with seasonality and willing to track an evolving rulebook, short-stay can produce strong nightly income in the right location.

For investors who want positive-leaning cashflow with risk spread across multiple rooms and a new-build asset, purpose-built co-living is the lane The Harmony Group works in, with a historical 10.8 per cent average gross yield and occupancy above 98 per cent across the team’s projects. If you are still comparing providers, this guide to the co-living investment companies in Australia for 2026 is a useful next read.

• Want resilience to a single vacancy: favour co-living or dual-key.
• Drawn to specialist disability housing: research SDA independently, on its own terms.
• Comfortable with hands-on work and seasonality: short-stay can suit, where rules allow.

No single strategy wins for everyone, and the honest comparison is the one that names the trade-offs rather than hiding them. The Harmony Group applies a 118-point analysis to each opportunity and declines roughly 85 per cent of the sites it assesses, which is why purpose-built co-living is a considered fit for some investors and not for others. The right first step is a conversation that tests your goals against the real demands of each path.

For a deeper look, visit The Harmony Group to explore how we approach purpose-built co-living within the wider field of high-yield strategies.

Frequently Asked Questions

Q: Which high-yield property strategy is best in Australia: co-living, SDA, dual-key or Airbnb?

A: There is no single best strategy, because co-living, SDA, dual-key and short-stay each earn yield differently and carry a different mix of management, compliance and vacancy risk. Co-living and dual-key spread tenant risk across multiple income sources, SDA depends on a government framework and an eligible participant, and short-stay rests on nightly demand within a tightening rulebook. The Harmony Group’s purpose-built co-living has a historical 10.8 per cent average gross yield, but the right choice depends on your goals and the risks you can manage.

Q: Does The Harmony Group offer NDIS or SDA properties?

A: No. The Harmony Group focuses on purpose-built co-living, not SDA or NDIS housing. SDA is included in this guide only as a neutral, third-party investment category so you can compare it fairly. If you are considering SDA, treat it as a specialist path and seek independent legal and financial advice, noting that the NDIA does not guarantee SDA returns.

Q: Why does co-living hold occupancy above 98 per cent?

A: In the purpose-built model The Harmony Group uses, rent comes from several private rooms let individually within one dwelling, so a single vacancy is only a fraction of total income rather than all of it. Specialist room-by-room management and a 118-point site assessment support the historical occupancy the team reports. These are historical results and are not a guarantee of future performance.

Q: How do I work out which strategy suits me?

A: Start with a no-obligation strategy session that tests your goals, involvement and risk tolerance against each option. If purpose-built co-living is not the right fit, an honest assessment will tell you why rather than push a property. Pair that conversation with advice from your own accountant or licensed adviser.

Want to Learn More?

The Harmony Group’s team brings 15 years of specialist experience and a track record across more than 200 delivered co-living projects, with over $810 million in projects delivered and approaching a billion. The approach is educators-first: clear comparisons, honest assessments, and a focus on assets built to pay their way.

Citations

• “Investment in Specialist Disability Accommodation (SDA)”:The NDIS confirms SDA serves participants with extreme functional impairment or very high support needs, that income comes from SDA payments plus a capped tenant rent contribution, that the NDIA and Australian Government do not guarantee returns, and that no income is received when an eligible participant is not living in the dwelling. ndis.gov.au
• “Understanding the Short Stay Levy”:Victoria’s State Revenue Office confirms a 7.5% short-stay levy applies from 1 January 2025 to stays under 28 consecutive days, with registration obligations, and that owners corporations and councils may impose further restrictions on short-stay accommodation. sro.vic.gov.au
• “National Vacancy Rates, April 2026”:SQM Research records a national residential rental vacancy rate of 1.2 per cent in April 2026, with all capital cities below 2 per cent, indicating tight rental demand across Australia. sqmresearch.com.au

General information only. The Harmony Group provides general information about property and co-living investment, not personal financial, tax or legal advice, and does not hold an Australian Financial Services Licence (AFSL). It does not account for your objectives, financial situation or needs, so consider its appropriateness and seek advice from a licensed financial adviser, accountant or the relevant authority before acting. SDA (Specialist Disability Accommodation) is referenced only as a neutral third-party investment category; The Harmony Group does not offer, build or recommend SDA or NDIS housing. Returns described for any strategy are historical or potential, are not guaranteed, and past performance is not a guide to future results. Regulatory measures described may change.