Langwarrin South flood map & planning overlays

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

Flood mapping covers Langwarrin South and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 7%). Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Around 100% of Langwarrin South is mapped as bushfire-prone, compared with a Frankston average of 60%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

The dominant planning zone in Langwarrin South is Low Density Residential Zone (LDRZ), though the suburb also includes Rural Conservation Zone (RCZ1) and Rural Conservation Zone (RCZ3). Zoning sets what you can build and do on a site, and can differ lot by lot.

Langwarrin South has 6 heritage-listed places 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 534 surveyed parcels in Langwarrin South, the median lot size is about 10,088 m². There are also 563 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 Langwarrin South itself. The suburb is served by 10 bus stops.

At the 2021 Census Langwarrin South had 1,346 usual residents, with a median age of 42 and an average household size of 3.3 people. The wider Langwarrin statistical area, which contains Langwarrin South, went from 18,750 people in 2001 to 25,788 in 2025, up 38%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Langwarrin South alone.

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Langwarrin South scores 1075 and sits in decile 10 of 10 nationally and decile 10 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 Langwarrin South was $2,773 a week at the 2021 Census, against $1,919 for the typical suburb in Frankston. Median rent was $346 a week and the median mortgage repayment $2,600 a month. These are 2021 Census figures and have not been indexed to today.

A Langwarrin 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.