Westby flood map & planning overlays
A planning-constraint profile of Westby (Gannawarra, VIC) - 20.54 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
20.54 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Westby's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Westby at a glance
How Westby is zoned
Selling in Westby? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses - a $9 planning report pulls them at the lot level for any Westby address.
Across its 20.54 km², Westby is highly constrained by planning overlays. About 73% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Farming Zone (FZ). The median lot measures about 89,044 m² across 61 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Check a specific Westby address
See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.
See what's in the $9 report →Westby planning - frequently asked
Where can I see a flood map of Westby?
The schematic on this page is a Westby flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 73% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Westby address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Westby flood-prone?
About 73% of Westby falls within a mapped flood overlay, against a Gannawarra average of 46%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Westby bushfire-prone?
Yes - around 100% of Westby is mapped as bushfire-prone, compared with a Gannawarra average of 99%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Westby?
The dominant planning zone in Westby is Farming Zone (FZ), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Transport Zone (TRZ2). Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Westby have heritage-listed places?
No heritage-listed places are on record within Westby. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Westby?
Across 61 surveyed parcels in Westby, the median lot size is about 89,044 m².
Do I need a planning report for a Westby property?
A Westby planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.