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Material Change of Use (MCU) in Queensland

Also known as: MCU · Material Change of Use · MCU Queensland · MCU DA

A Material Change of Use (MCU) is one of the four development types defined by the Queensland Planning Act. You need an MCU approval whenever you start a new use of premises, materially change the intensity of an existing use, or re-establish a use that has lapsed. For SEQ developers and investors, MCU is the gate between buying a house and approving townhouses, dual occupancy, secondary dwelling, or rooming accommodation on the same lot.

When you need an MCU

If your intended use is anything other than the lot's existing or last lawful use — and the planning scheme doesn't classify it as Accepted Development for that zone — you need an MCU. The most common SEQ MCU triggers are: dual occupancy on a lot currently used as a single dwelling, multiple dwelling (townhouses or units), secondary dwelling above what the scheme permits as Accepted, rooming accommodation, short-term accommodation in a residential zone, and home-based business above the prescribed thresholds.

Code vs Impact Assessment

Every MCU is one of two flavours. Code Assessable means the application is assessed against the relevant codes only — no public notification, no third-party appeal rights, faster timeline (typically 35-65 business days). Impact Assessable means public notification (15 business days minimum), broader assessment against the whole planning scheme, and slower decisions (often 80-150 business days). The distinction is set by the planning scheme's Categories of Development tables for each zone. Casa Daily flags this for every listing in your morning brief.

What gets submitted

An MCU application typically includes: a planning report, an architectural concept package (siting, floor plans, elevations), a site analysis plan, a stormwater management plan, an engineering services plan, traffic and parking analysis, landscape concept, and acoustic, ecological, or heritage reports if relevant overlays apply. Casa AI can run a gap analysis on your draft submission against the council's checklist before you lodge.

Worked example — Coorparoo townhouses

A 1,012m² LMR lot in Coorparoo with a single dwelling. The owner intends to demolish and build four townhouses. Brisbane City Plan classifies four townhouses on an LMR lot of >800m² and frontage >20m as Code Assessable Multiple Dwelling. Casa Daily would surface this in the morning brief with a Casa Score >75, flag the LMR2 sub-precinct rules, and link to comparable approved townhouse DAs within 500m so you can benchmark conditions and timeline before offering.

FAQ

Common questions.

Do I need an MCU to subdivide a block?
No — pure subdivision is a Reconfiguration of a Lot (RoL), a separate development type. You only need both when the subdivision is paired with a new use (e.g. RoL + MCU for a 4-pack townhouse on a freshly subdivided community-title lot).
How long does an MCU take in Brisbane?
Code Assessable MCUs typically decide in 35-65 business days (5-13 weeks); Impact Assessable applications take 80-150 business days (16-30 weeks) once you account for the 15-business-day public notification period and any Information Request cycles. Casa Daily's DA Pathway tool shows the historical median timeline for your specific lot's zone and overlay profile.
Can I lodge an MCU myself?
Legally yes — there's no requirement to engage a town planner. Practically, Code Assessable MCUs in well-precedented zones (LMR townhouses, secondary dwellings) are within reach of an organised owner-developer using Casa Daily's intelligence. Impact Assessable applications, anything in heritage or character precincts, and anything with significant overlay constraints almost always benefit from a registered planner.

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