Sunshine Coast · South East Queensland · Development guide
Building a duplex in Sunshine Coast: rules, approval and what the data shows
Zone rules from Sunshine Coast Planning Scheme 2014 plus real outcomes from decided Sunshine Coast council applications. Data current as of 26 July 2026.
According to Casa Intelligence analysis of 2,987 decided dual-occupancy and duplex applications in Sunshine Coast, 93% were approved, with a median decision time of 41 days.
93%
Approval rate
2,787 of 2,987 decided applications
41 days
Median decision time
Lodgement to decision (n=2,969)
2,987
Decided applications
Comparable dual-occupancy and duplex applications
13
Zones tracked
Rules from Sunshine Coast Planning Scheme 2014
Do you need council approval for a duplex or dual-occupancy project in Sunshine Coast?
Queensland's Planning Act 2016 sorts development into three assessment categories: accepted development (no development application needed if you meet the stated requirements), code assessable (a DA assessed against the planning scheme's codes, no public notification), and impact assessable (a DA with public notification and third-party appeal rights). Which category applies to your project is set by Sunshine Coast Planning Scheme 2014 — and it depends on your zone, any precinct that applies, and the overlays on your lot.
Under Sunshine Coast Planning Scheme 2014, dual occupancy is contemplated in 4 of the 13 zones we track for Sunshine Coast — code assessable in the Emerging Community, High Density Residential, Low Density Residential and Medium Density Residential zones. In the 9 remaining zones it is not an anticipated use, which in practice means impact assessment or an unlikely approval.
Minimum parent-lot sizes for a dual occupancy range from 450 m² to 800 m² depending on the zone (full table below). Mapped precincts and density overlays can tighten these numbers for a specific lot — which is why the same street can contain blocks that qualify and blocks that don't.
None of this is answerable with certainty at council level — the pathway for your project is set by your lot's zone, precinct and overlays together. A free Casa block check reads those for your exact address in seconds.
Duplex rules by zone in Sunshine Coast
Zone-level provisions from Sunshine Coast Planning Scheme 2014. Zone rules are the starting point — precinct mapping and overlays can tighten them for individual lots.
| Zone | Dual occupancy | Assessment | Min parent lot |
|---|---|---|---|
| Emerging Community | Yes | Code assessable | 600 m² |
| High Density Residential | Yes | Code assessable | 800 m² |
| Low Density Residential | Yes | Code assessable | 600 m² |
| Medium Density Residential | Yes | Code assessable | 450 m² |
| Community Facilities | No | — | — |
| High Impact Industry | No | — | — |
| Limited Development (Constrained Land) | No | — | — |
| Low Impact Industry | No | — | — |
| Medium Impact Industry | No | — | — |
| Open Space | No | — | — |
| Rural Residential | No | — | — |
| Rural | No | — | — |
| Sport and Recreation | No | — | — |
“—” means the value is not recorded in our rules dataset, not that no rule exists. Always confirm against the current planning scheme before relying on a figure.
How duplex and dual-occupancy applications have fared in Sunshine Coast
Across 2,987 decided dual-occupancy and duplex applications recorded against Sunshine Coast council, 2,787 were approved — an approval rate of 93%. That reflects a strong track record for this kind of proposal. These are real, decided applications assessed by the council, not estimates or modelling.
The median time from lodgement to decision was 41 days (measured across the 2,969 applications in this cohort with both dates recorded). That is a comparatively fast assessment turnaround. Individual applications vary widely with information requests, referrals and the assessment pathway for the specific site.
We do not hold enough charged decision notices in this cohort to publish a median infrastructure charge for Sunshine Coast. As a statutory ceiling, Queensland caps adopted charges at $36,670.70 per three-or-more-bedroom dwelling or lot (2025–26 indexed) — an upper bound, not an estimate for your project.
Recent duplex and dual-occupancy decisions in Sunshine Coast
The most recent decided dual-occupancy and duplex applications in this cohort, cited by real council application number so you can verify each one yourself.
| Application | Decision | Decided | Days to decision |
|---|---|---|---|
| OPW25/0495 | Approved | 19 Apr 2026 | 166 days |
| MCU25/0318 | Approved | 19 Apr 2026 | 166 days |
| OPW25/0602 | Approved | 12 Mar 2026 | 84 days |
| MCU25/0382 | Approved | 12 Mar 2026 | 84 days |
| MCU25/0362 | Approved | 9 Mar 2026 | 88 days |
Duplex in Sunshine Coast: common questions
Do I need council approval for a duplex or dual-occupancy project in Sunshine Coast?
It depends on your lot's zone, precinct and overlays under Sunshine Coast Planning Scheme 2014. Queensland sorts development into accepted (no DA if requirements are met), code assessable (DA without public notification) and impact assessable (DA with public notification). Some compliant proposals of this type proceed without a planning application, others need a full DA. The only reliable way to know your pathway is to check your specific address.
Which zones allow duplex and dual-occupancy development in Sunshine Coast?
Under Sunshine Coast Planning Scheme 2014, duplex and dual-occupancy development is contemplated in Emerging Community, High Density Residential, Low Density Residential and Medium Density Residential. Zone permission is the starting point, not the answer: precinct mapping and overlays can restrict individual lots within a supportive zone.
What is the approval rate for duplex or dual-occupancy project applications in Sunshine Coast?
93% of the 2,987 decided dual-occupancy and duplex applications recorded against Sunshine Coast council were approved (median 41 days to decision). Figures are indicative, derived from decided council records; past decisions do not guarantee future outcomes.
How long does duplex or dual-occupancy project approval take in Sunshine Coast?
The median time from lodgement to decision across the 2,969 dated applications in this cohort was 41 days. Individual applications vary with information requests, referrals and the assessment pathway that applies to the site.
About this guide
Zone rules on this page are drawn from Sunshine Coast Planning Scheme 2014 as recorded in our dataset, and application statistics from decided development applications recorded against Sunshine Coast council, current as of 26 July 2026. Planning schemes are amended over time and precincts, neighbourhood plans and overlays can vary the rules for individual lots. Past decisions describe how comparable proposals have fared — they do not guarantee, and cannot predict, the outcome of any future application. This page is general information, not planning or legal advice.
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