Cranbourne South flood map & planning overlays

The schematic on this page is a Cranbourne South flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 3% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Cranbourne South address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.

About 3% of Cranbourne South falls within a mapped flood overlay, against the council-wide suburb average of 18%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Around 95% of Cranbourne South is mapped as bushfire-prone, compared with a Casey average of 59%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

The dominant planning zone in Cranbourne South is Green Wedge Zone (GWZ2), though the suburb also includes Green Wedge Zone (GWZ5) and Green Wedge A Zone (GWAZ2). Zoning sets what you can build and do on a site, and can differ lot by lot.

Cranbourne South has 1 heritage-listed place on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.

Across 2,133 surveyed parcels in Cranbourne South, the median lot size is about 401 m². There are also 697 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.

There is no train station inside Cranbourne South itself. The suburb is served by 8 bus stops.

At the 2021 Census Cranbourne South had 3,241 usual residents, with a median age of 35 and an average household size of 2.9 people. The wider Cranbourne South statistical area, which contains Cranbourne South, went from 4,798 people in 2001 to 27,368 in 2025, up 470%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Cranbourne South alone.

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Cranbourne South scores 1036 and sits in decile 8 of 10 nationally and decile 8 within Victoria - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.

Median household income in Cranbourne South was $2,278 a week at the 2021 Census, against $1,912 for the typical suburb in Casey. Median rent was $470 a week and the median mortgage repayment $2,167 a month. These are 2021 Census figures and have not been indexed to today.

A Cranbourne South planning report pulls every overlay - zoning, flood, bushfire, heritage, environmental and noise - that touches a single lot, on live council and state data. The interactive map preview is free; the full PDF report is $9.