Logan · South East Queensland · Development guide
Building a granny flat in Logan: rules, approval and what the data shows
Zone rules from Logan Planning Scheme 2015 plus real outcomes from decided Logan council applications. Data current as of 26 July 2026.
According to Casa Intelligence analysis of 1,339 decided secondary dwelling (granny flat) applications in Logan, 90% were approved, with a median decision time of 28 days.
90%
Approval rate
1,203 of 1,339 decided applications
28 days
Median decision time
Lodgement to decision (n=1,324)
1,339
Decided applications
Comparable secondary dwelling (granny flat) applications
$20,000
Median infra. charge
Across 37 charged decision notices
Do you need council approval for a granny flat or secondary dwelling in Logan?
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 Logan Planning Scheme 2015 — and it depends on your zone, any precinct that applies, and the overlays on your lot.
Under Logan Planning Scheme 2015, a secondary dwelling (granny flat) is contemplated in 5 of the 9 zones we track for Logan, including Emerging Community, Low Density Residential, Low-Medium Density Residential, Medium Density Residential and 1 other zones, and not in 4 others. Where a granny flat complies with the scheme's requirements for the zone — size, siting and the applicable codes — it can often proceed without a planning application (building approval is still required). Fall outside those requirements, or pick up an overlay trigger, and a development application is needed.
Queensland also allows secondary dwellings to be rented separately from the main house (a state-wide change from 2022), which removed the old "household member" restriction in most schemes. The zone table below shows where Logan's scheme contemplates a secondary dwelling — but lot size, flood and character overlays, and precinct mapping decide the answer for a specific address.
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.
Granny flat rules by zone in Logan
Zone-level provisions from Logan Planning Scheme 2015. Zone rules are the starting point — precinct mapping and overlays can tighten them for individual lots.
| Zone | Secondary dwelling | Max height | Notes |
|---|---|---|---|
| Emerging Community | Yes | 9.5 m | Secondary dwelling / Dual occupancy (auxiliary unit) size caps (Logan Planning Scheme 2015 V9.2, §9.3.2.2 Dual occupancy (auxiliary unit) code): the subordinate/secondary dwelling has a maximum gross floor area of 70 m² if in the residential zone category and on a lot less than 1,000 m² in size, or 100 m² otherwise; and a lot accommodating an auxiliary unit that is not a rear lot has a minimum frontage of 15 m (§9.3.2.3 AO11). |
| Low Density Residential | Yes | 8.5 m | Secondary dwelling / Dual occupancy (auxiliary unit) size caps (Logan Planning Scheme 2015 V9.2, §9.3.2.2 Dual occupancy (auxiliary unit) code): the subordinate/secondary dwelling has a maximum gross floor area of 70 m² if in the residential zone category and on a lot less than 1,000 m² in size, or 100 m² otherwise; and a lot accommodating an auxiliary unit that is not a rear lot has a minimum frontage of 15 m (§9.3.2.3 AO11). |
| Low-Medium Density Residential | Yes | 9.5 m | Townhouses and small lots common. Secondary dwelling / Dual occupancy (auxiliary unit) size caps (Logan Planning Scheme 2015 V9.2, §9.3.2.2 Dual occupancy (auxiliary unit) code): the subordinate/secondary dwelling has a maximum gross floor area of 70 m² if in the residential zone category and on a lot less than 1,000 m² in size, or 100 m² otherwise; and a lot accommodating an auxiliary unit that is not a rear lot has a minimum frontage of 15 m (§9.3.2.3 AO11). |
| Medium Density Residential | Yes | 11 m | Secondary dwelling / Dual occupancy (auxiliary unit) size caps (Logan Planning Scheme 2015 V9.2, §9.3.2.2 Dual occupancy (auxiliary unit) code): the subordinate/secondary dwelling has a maximum gross floor area of 70 m² if in the residential zone category and on a lot less than 1,000 m² in size, or 100 m² otherwise; and a lot accommodating an auxiliary unit that is not a rear lot has a minimum frontage of 15 m (§9.3.2.3 AO11). |
| Rural Residential | Yes | 8.5 m | Secondary dwelling / Dual occupancy (auxiliary unit) size caps (Logan Planning Scheme 2015 V9.2, §9.3.2.2 Dual occupancy (auxiliary unit) code): the subordinate/secondary dwelling has a maximum gross floor area of 70 m² if in the residential zone category and on a lot less than 1,000 m² in size, or 100 m² otherwise; and a lot accommodating an auxiliary unit that is not a rear lot has a minimum frontage of 15 m (§9.3.2.3 AO11). |
| Centre | No | 22 m | — |
| High Density Residential | No | 15 m | — |
| Mixed Use | No | 15 m | — |
| Priority Development Area | No | 25 m | Yarrabilba, Greater Flagstone PDAs. High density development. |
“—” 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 granny flat and secondary dwelling applications have fared in Logan
Across 1,339 decided secondary dwelling (granny flat) applications recorded against Logan council, 1,203 were approved — an approval rate of 90%. That reflects a solid, though not automatic, 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 28 days (measured across the 1,324 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.
Where we hold the council's decision notice, we also extract the infrastructure charges levied. Across 37 charged decision notices in this cohort, the median total infrastructure charge was $20,000. Charges scale with the lots or dwellings you create, and credits for existing use can reduce what you actually pay.
Recent granny flat and secondary dwelling decisions in Logan
The most recent decided secondary dwelling (granny flat) applications in this cohort, cited by real council application number so you can verify each one yourself.
| Application | Decision | Decided | Days to decision |
|---|---|---|---|
| CAR/47/2026 | Approved | 20 Feb 2026 | 21 days |
| MCUR/100/2025 | Approved | 9 Feb 2026 | 147 days |
| CAR/613/2025 | Approved | 2 Feb 2026 | 107 days |
| MCUR/127/2025 | Withdrawn | 30 Jan 2026 | 86 days |
| CAR/636/2025 | Approved | 28 Jan 2026 | 56 days |
Granny flat in Logan: common questions
Do I need council approval for a granny flat or secondary dwelling in Logan?
It depends on your lot's zone, precinct and overlays under Logan Planning Scheme 2015. 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 granny flat and secondary dwelling development in Logan?
Under Logan Planning Scheme 2015, granny flat and secondary dwelling development is contemplated in Emerging Community, Low Density Residential, Low-Medium Density Residential, Medium Density Residential and Rural 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 granny flat or secondary dwelling applications in Logan?
90% of the 1,339 decided secondary dwelling (granny flat) applications recorded against Logan council were approved (median 28 days to decision). Figures are indicative, derived from decided council records; past decisions do not guarantee future outcomes.
How long does granny flat or secondary dwelling approval take in Logan?
The median time from lodgement to decision across the 1,324 dated applications in this cohort was 28 days. Individual applications vary with information requests, referrals and the assessment pathway that applies to the site.
How much are infrastructure charges for granny flat or secondary dwelling projects in Logan?
Across 37 charged decision notices in this cohort, the median total infrastructure charge was $20,000. Charges scale with the lots or dwellings created and existing-use credits can reduce them. Queensland caps adopted charges at $36,670.70 per three-or-more-bedroom dwelling or lot (2025–26 indexed).
About this guide
Zone rules on this page are drawn from Logan Planning Scheme 2015 as recorded in our dataset, and application statistics from decided development applications recorded against Logan 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.
Would your block qualify? Check your exact address — free.
Council-level rules tell you the framework. A free block check reads the zone, precinct and overlays for your address: Casa Score, zone and overlay position, in seconds.
Find out what these rules mean for your site
This guide covers Logan at council level. A Preliminary Planning Report covers your address: approval likelihood, code vs impact pathway, constraints, costs and comparable approved DAs — prepared by a qualified development professional (Master of Architecture) and delivered in minutes.