Derrimut flood map & planning overlays

The schematic on this page is a Derrimut 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 Derrimut address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.

Flood mapping covers Derrimut and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 6%). Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Around 17% of Derrimut is mapped as bushfire-prone, compared with a Brimbank average of 15%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

The dominant planning zone in Derrimut is Industrial 2 Zone (IN2Z), though the suburb also includes Industrial 1 Zone (IN1Z) and Public Conservation and Resource Zone (PCRZ). Zoning sets what you can build and do on a site, and can differ lot by lot.

Derrimut has 5 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 3,529 surveyed parcels in Derrimut, the median lot size is about 544 m². There are also 2,236 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 Derrimut itself. The suburb is served by 23 bus stops.

At the 2021 Census Derrimut had 8,651 usual residents, with a median age of 32 and an average household size of 3.6 people. The wider Derrimut statistical area, which contains Derrimut, went from 76 people in 2001 to 8,958 in 2025, up 11687%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Derrimut alone.

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Derrimut scores 995 and sits in decile 6 of 10 nationally and decile 5 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 Derrimut was $2,272 a week at the 2021 Census, against $1,486 for the typical suburb in Brimbank. Median rent was $400 a week and the median mortgage repayment $1,976 a month. These are 2021 Census figures and have not been indexed to today.

A Derrimut 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.