Somerville flood map & planning overlays

The schematic on this page is a Somerville flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 7% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Somerville address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.

About 7% of Somerville falls within a mapped flood overlay, against the council-wide suburb average of 3%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Around 100% of Somerville is mapped as bushfire-prone, compared with a Mornington Peninsula average of 89%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

The dominant planning zone in Somerville is Green Wedge Zone (GWZ2), though the suburb also includes Special Use Zone (SUZ1) and Low Density Residential Zone (LDRZ). Zoning sets what you can build and do on a site, and can differ lot by lot.

Somerville has 20 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 5,742 surveyed parcels in Somerville, the median lot size is about 692 m². There are also 1,927 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.

Yes - Somerville has 1 train station: Somerville Station. It is also served by 24 bus stops.

At the 2021 Census Somerville had 11,767 usual residents, with a median age of 40 and an average household size of 2.6 people. The wider Somerville statistical area, which contains Somerville, went from 16,532 people in 2001 to 19,098 in 2025, up 16%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Somerville alone.

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Somerville scores 1000 and sits in decile 6 of 10 nationally and decile 6 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 Somerville was $1,781 a week at the 2021 Census, against $1,906 for the typical suburb in Mornington Peninsula. Median rent was $380 a week and the median mortgage repayment $1,800 a month. These are 2021 Census figures and have not been indexed to today.

A Somerville 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.