Logan · Granny flat guide
Building a granny flat in Logan: rules, approval and what the data shows
Logan Planning Scheme 2015 (V9.2) sets the rules for a granny flat or secondary dwelling in Logan. The figures on this page come from 1,032 decided secondary dwelling (granny flat) applications recorded against Logan council, current to 9 Sept 2026.
According to Casa Intelligence analysis of 1,032 decided secondary dwelling (granny flat) applications in Logan, 99.9% were approved, with a median decision time of 28 days.
99.9%
Approval rate
1,031 of 1,032 decided Logan applications
28 days
Median decision time
Lodgement to decision across 1,022 dated Logan cases
1,032
Decided applications
Logan secondary dwelling (granny flat) applications
$20,000
Median infra. charge
Across 37 charged Logan decision notices
Do you need council approval for a granny flat or secondary dwelling in Logan?
Whether a granny flat or secondary dwelling in Logan needs a development application is decided by Logan Planning Scheme 2015 (V9.2), which places each proposal in one of the three Planning Act 2016 categories: accepted development, code assessable or impact assessable. For a Logan lot the answer turns on the zone, any precinct mapped over it and the overlays that apply, so Logan council does not publish one blanket answer for granny flat and secondary dwelling proposals.
Casa's rules register for Logan Planning Scheme 2015 (V9.2) records a secondary dwelling as contemplated in 5 of the 9 Logan zones it tracks, including Emerging Community, Low Density Residential, Low-Medium Density Residential, Medium Density Residential and 1 other zone, and not in 4 others. A Logan granny flat that meets the scheme's size and siting requirements for its zone can often proceed on building approval alone, while one that falls outside them or picks up an overlay trigger needs a development application.
Logan's own wording on secondary dwellings is quoted further down this page from the Dual occupancy and Dwelling house code, which is the passage a Logan assessing officer reads first.
The Logan record gives a feel for what assessment involves: a quarter of the 1,022 dated granny flat and secondary dwelling decisions were made within 17 days of lodgement, and a quarter took longer than 56 days.
The zone, precinct and overlay position of one Logan address is what settles the pathway for a granny flat or secondary dwelling, and a free Casa block check reads all three for any Logan lot in seconds.
What Logan’s scheme says about granny flat and secondary dwelling development
The passage below is quoted word for word from Logan Planning Scheme 2015 (V9.2), the instrument Logan council assesses granny flat and secondary dwelling proposals against, from the Dual occupancy and Dwelling house code, as Casa held the Logan scheme text on 9 Sept 2026.
“The subordinate dwelling in a Dual occupancy (auxiliary unit), or secondary dwelling for a Dwelling house, has a maximum gross floor area of: 70m2 if in the residential zone category and on a lot that is less than 1,000m2 in size; or 100m2 otherwise”
Source for these Logan granny flat and secondary dwelling passages: Logan Planning Scheme 2015 (V9.2) (Logan council)
Granny flat position by zone in Logan
Casa's register holds 9 Logan zone rows relevant to a granny flat or secondary dwelling, each citing Logan Planning Scheme 2015 (V9.2), and precinct mapping and overlays tighten these granny flat and secondary dwelling positions for individual Logan lots.
| Zone | Secondary dwelling |
|---|---|
| Emerging Community | Yes |
| Low Density Residential | Yes |
| Low-Medium Density Residential | Yes |
| Medium Density Residential | Yes |
| Rural Residential | Yes |
| Centre | No |
| High Density Residential | No |
| Mixed Use | No |
| Priority Development Area | No |
"not held" means Logan's register has no value for that granny flat and secondary dwelling cell, not that the scheme is silent. Height, setback and site-cover figures for Logan zones are held in the register but have not been checked against the scheme text, so they are not printed on this granny flat and secondary dwelling page.
How granny flat and secondary dwelling applications have fared in Logan
Logan council has decided 1,032 secondary dwelling (granny flat) applications in our dataset, approving 1,031 (99.9%) and refusing 1. That is level with the pooled South East Queensland figure of 99.6% across 1,804 decided granny flat and secondary dwelling applications in the 5 councils Casa tracks, ranking Logan 4th of 5 for approval rate.
Granny flat work is 3.8% of everything Logan council has decided in our records (26,960 applications of all kinds), which makes Logan the largest granny flat and secondary dwelling cohort of the 5 councils.
The median Logan decision took 28 days from lodgement, measured across the 1,022 granny flat and secondary dwelling applications with both dates recorded, 18 days faster than the 46-day middle council for this cohort. Logan decisions made since the start of 2024 ran at a median of 57 days (160 cases), 29 days longer than the long-run Logan figure.
The busiest year for granny flat and secondary dwelling decisions in Logan was 2018, with 170 decided. In 2025 Logan council decided 84 and approved 100%, against 63 decided in 2024.
By suburb, Logan's granny flat and secondary dwelling decisions cluster in Logan Reserve (83 decided, 100% approved), Loganlea (56 decided, 100% approved) and Park Ridge (52 decided, 100% approved).
Across the 37 Logan decision notices in this cohort that levied infrastructure charges, the median total charge was $20,000. Logan's charges scale with the lots or dwellings created, and credits for existing use reduce what a granny flat or secondary dwelling actually pays.
Logan granny flat and secondary dwelling decisions by year
| Year | Decided | Approved | Refused | Approval rate |
|---|---|---|---|---|
| 2021 | 65 | 65 | 0 | 100% |
| 2022 | 73 | 73 | 0 | 100% |
| 2023 | 51 | 50 | 1 | 98% |
| 2024 | 63 | 63 | 0 | 100% |
| 2025 | 84 | 84 | 0 | 100% |
| 2026 | 13 | 13 | 0 | 100% |
Recent granny flat and secondary dwelling decisions in Logan
The 4 most recently decided secondary dwelling (granny flat) applications recorded against Logan council, each cited by Logan's own application number so it can be looked up on the council's register.
| 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 |
| 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?
Only your lot's zone, precinct and overlays under Logan Planning Scheme 2015 (V9.2) can answer that for a granny flat or secondary dwelling at a Logan address. Some compliant Logan proposals of this type proceed on building approval alone, while others need a full development application. Logan council has decided 1,032 secondary dwelling (granny flat) applications in our records, so the pathway question comes up constantly in Logan.
Which zones allow granny flat and secondary dwelling development in Logan?
Casa's register for Logan Planning Scheme 2015 (V9.2) records granny flat and secondary dwelling development as contemplated in Emerging Community, Low Density Residential, Low-Medium Density Residential, Medium Density Residential and Rural Residential, 5 of the 9 Logan zones tracked. Precinct mapping and overlays can still restrict a Logan lot inside one of those zones.
What is the approval rate for granny flat or secondary dwelling applications in Logan?
99.9% of the 1,032 decided secondary dwelling (granny flat) applications recorded against Logan council were approved and 1 was refused. Logan sits against a pooled granny flat and secondary dwelling figure of 99.6% across the 5 South East Queensland councils Casa tracks. These are past Logan decisions and they do not guarantee any future granny flat and secondary dwelling outcome.
How long does granny flat or secondary dwelling approval take in Logan?
The median time from lodgement to decision across the 1,022 dated granny flat and secondary dwelling applications in Logan was 28 days. A quarter of Logan decisions came within 17 days and a quarter took longer than 56 days. Since the start of 2024 the Logan median has been 57 days across 160 decisions.
How much are infrastructure charges for granny flat or secondary dwelling projects in Logan?
Across the 37 Logan decision notices in this cohort that levied charges, the median total infrastructure charge was $20,000. Logan's charges scale with the lots or dwellings a granny flat or secondary dwelling creates and existing-use credits reduce them.
What does Logan Planning Scheme 2015 (V9.2) say about granny flat and secondary dwelling development in Logan?
The Dual occupancy and Dwelling house code (section 9.3.2.2) states: "The subordinate dwelling in a Dual occupancy (auxiliary unit), or secondary dwelling for a Dwelling house, has a maximum gross floor area of: 70m2 if in the residential zone category and on a lot that is less than 1,000m2 in size; or 100m2 otherwise"
About this guide
The zone rows on this page come from Casa's rules register for Logan Planning Scheme 2015 (V9.2), and the statistics from 1,032 decided secondary dwelling (granny flat) applications recorded against Logan council between 12 Feb 2010 and 20 Feb 2026, computed on 9 Sept 2026.
Logan amends its scheme over time, and precincts, local plans and overlays can vary these granny flat and secondary dwelling rules for a single Logan lot. Past Logan decisions describe how comparable granny flat and secondary dwelling proposals fared and do not predict any future application.
This page is general information, not planning or legal advice.
Would a Logan block support a granny flat or secondary dwelling? Check the address free.
Logan-wide granny flat and secondary dwelling rules give the frame, and a free block check reads the zone, precinct and overlays for one Logan address and returns a Casa Score for a granny flat or secondary dwelling in seconds.
What the Logan granny flat rules mean for your site
This guide covers Logan at council level across 1,032 decided secondary dwelling (granny flat) applications. A Preliminary Planning Report covers one address: the likely pathway for a granny flat or secondary dwelling, the constraints on that Logan lot, and the comparable Logan approvals, prepared by our planning team and delivered within three business days.