Logan · Duplex guide
Building a duplex in Logan: rules, approval and what the data shows
Logan Planning Scheme 2015 (V9.2) sets the rules for a duplex or dual-occupancy project in Logan. The figures on this page come from 710 decided dual-occupancy and duplex applications recorded against Logan council, current to 9 Sept 2026.
According to Casa Intelligence analysis of 710 decided dual-occupancy and duplex applications in Logan, 99.9% were approved, with a median decision time of 28 days.
99.9%
Approval rate
709 of 710 decided Logan applications
28 days
Median decision time
Lodgement to decision across 705 dated Logan cases
710
Decided applications
Logan dual-occupancy and duplex applications
$42,500
Median infra. charge
Across 23 charged Logan decision notices
Do you need council approval for a duplex or dual-occupancy project in Logan?
Whether a duplex or dual-occupancy project 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 duplex and dual-occupancy proposals.
Casa's rules register for Logan Planning Scheme 2015 (V9.2) records dual occupancy as a contemplated use in 8 of the 9 Logan zones it tracks, code assessable in Centre, Emerging Community, High Density Residential, Low Density Residential, Low-Medium Density Residential and 3 other zones. In the 1 remaining Logan zone a dual occupancy is not an anticipated use, which in practice means impact assessment or an unlikely approval.
Minimum lot sizes and frontages for a Logan dual occupancy are set per zone and often per precinct, and the register figures for those minimums have not yet been checked against the scheme text, so this page quotes Logan's own wording below rather than printing an unchecked number.
The Logan record gives a feel for what assessment involves: a quarter of the 705 dated duplex and dual-occupancy decisions were made within 11 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 duplex or dual-occupancy project, and a free Casa block check reads all three for any Logan lot in seconds.
What Logan’s scheme says about duplex and dual-occupancy development
The passages below are quoted word for word from Logan Planning Scheme 2015 (V9.2), the instrument Logan council assesses duplex and dual-occupancy proposals against, from the Dual occupancy and Dwelling house code, as Casa held the Logan scheme text on 9 Sept 2026.
“The purpose of the code is to ensure that a Dual occupancy or Dwelling house is compatible with the surrounding area and to ensure a Dwelling house protects the environment, and the safety of people and property.”
“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 duplex and dual-occupancy passages: Logan Planning Scheme 2015 (V9.2) (Logan council)
Duplex position by zone in Logan
Casa's register holds 9 Logan zone rows relevant to a duplex or dual-occupancy project, each citing Logan Planning Scheme 2015 (V9.2), and precinct mapping and overlays tighten these duplex and dual-occupancy positions for individual Logan lots.
| Zone | Dual occupancy | Assessment |
|---|---|---|
| Centre | Yes | Code assessable |
| Emerging Community | Yes | Code assessable |
| High Density Residential | Yes | Code assessable |
| Low Density Residential | Yes | Code assessable |
| Low-Medium Density Residential | Yes | Code assessable |
| Medium Density Residential | Yes | Code assessable |
| Mixed Use | Yes | Code assessable |
| Priority Development Area | Yes | Code assessable |
| Rural Residential | No | not held |
"not held" means Logan's register has no value for that duplex and dual-occupancy 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 duplex and dual-occupancy page.
How duplex and dual-occupancy applications have fared in Logan
Logan council has decided 710 dual-occupancy and duplex applications in our dataset, approving 709 (99.9%) and refusing 1. That is 1 point above the pooled South East Queensland figure of 99% across 3,382 decided duplex and dual-occupancy applications in the 7 councils Casa tracks, ranking Logan 4th of 6 for approval rate.
Duplex work is 2.6% of everything Logan council has decided in our records (26,960 applications of all kinds), which makes Logan the 2nd largest duplex and dual-occupancy cohort of the 7 councils.
The median Logan decision took 28 days from lodgement, measured across the 705 duplex and dual-occupancy applications with both dates recorded, 38 days faster than the 66-day middle council for this cohort. Logan decisions made since the start of 2024 ran at a median of 72 days (59 cases), 44 days longer than the long-run Logan figure.
The busiest year for duplex and dual-occupancy decisions in Logan was 2017, with 143 decided. In 2025 Logan council decided 28 and approved 100%, against 22 decided in 2024.
By suburb, Logan's duplex and dual-occupancy decisions cluster in Loganlea (75 decided, 100% approved), Logan Reserve (62 decided, 100% approved) and Marsden (55 decided, 100% approved).
Across the 23 Logan decision notices in this cohort that levied infrastructure charges, the median total charge was $42,500. Logan's charges scale with the lots or dwellings created, and credits for existing use reduce what a duplex or dual-occupancy project actually pays.
Logan duplex and dual-occupancy decisions by year
| Year | Decided | Approved | Refused | Approval rate |
|---|---|---|---|---|
| 2021 | 46 | 46 | 0 | 100% |
| 2022 | 40 | 40 | 0 | 100% |
| 2023 | 29 | 28 | 1 | 97% |
| 2024 | 22 | 22 | 0 | 100% |
| 2025 | 28 | 28 | 0 | 100% |
| 2026 | 9 | 9 | 0 | 100% |
Recent duplex and dual-occupancy decisions in Logan
The 5 most recently decided dual-occupancy and duplex 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 |
|---|---|---|---|
| BWAP/205/2025 | Approved | 19 Feb 2026 | 94 days |
| MCUR/67/2025 | Approved | 14 Feb 2026 | 227 days |
| MCUR/100/2025 | Approved | 9 Feb 2026 | 147 days |
| MCUC/110/2018 | Approved | 21 Jan 2026 | 83 days |
| MCUR/96/2025 | Approved | 16 Jan 2026 | 141 days |
Duplex in Logan: common questions
Do I need council approval for a duplex or dual-occupancy project in Logan?
Only your lot's zone, precinct and overlays under Logan Planning Scheme 2015 (V9.2) can answer that for a duplex or dual-occupancy project 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 710 dual-occupancy and duplex applications in our records, so the pathway question comes up constantly in Logan.
Which zones allow duplex and dual-occupancy development in Logan?
Casa's register for Logan Planning Scheme 2015 (V9.2) records duplex and dual-occupancy development as contemplated in Centre, Emerging Community, High Density Residential, Low Density Residential, Low-Medium Density Residential, Medium Density Residential and 2 other zones, 8 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 duplex or dual-occupancy project applications in Logan?
99.9% of the 710 decided dual-occupancy and duplex applications recorded against Logan council were approved and 1 was refused. Logan sits against a pooled duplex and dual-occupancy figure of 99% across the 7 South East Queensland councils Casa tracks. These are past Logan decisions and they do not guarantee any future duplex and dual-occupancy outcome.
How long does duplex or dual-occupancy project approval take in Logan?
The median time from lodgement to decision across the 705 dated duplex and dual-occupancy applications in Logan was 28 days. A quarter of Logan decisions came within 11 days and a quarter took longer than 56 days. Since the start of 2024 the Logan median has been 72 days across 59 decisions.
How much are infrastructure charges for duplex or dual-occupancy project projects in Logan?
Across the 23 Logan decision notices in this cohort that levied charges, the median total infrastructure charge was $42,500. Logan's charges scale with the lots or dwellings a duplex or dual-occupancy project creates and existing-use credits reduce them.
What does Logan Planning Scheme 2015 (V9.2) say about duplex and dual-occupancy development in Logan?
The Dual occupancy and Dwelling house code (section 9.3.2.2) states: "The purpose of the code is to ensure that a Dual occupancy or Dwelling house is compatible with the surrounding area and to ensure a Dwelling house protects the environment, and the safety of people and property."
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 710 decided dual-occupancy and duplex applications recorded against Logan council between 4 Mar 2010 and 19 Feb 2026, computed on 9 Sept 2026.
Logan amends its scheme over time, and precincts, local plans and overlays can vary these duplex and dual-occupancy rules for a single Logan lot. Past Logan decisions describe how comparable duplex and dual-occupancy 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 duplex or dual-occupancy project? Check the address free.
Logan-wide duplex and dual-occupancy 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 duplex or dual-occupancy project in seconds.
What the Logan duplex rules mean for your site
This guide covers Logan at council level across 710 decided dual-occupancy and duplex applications. A Preliminary Planning Report covers one address: the likely pathway for a duplex or dual-occupancy project, the constraints on that Logan lot, and the comparable Logan approvals, prepared by our planning team and delivered within three business days.