Grass Flat flood map & planning overlays
A planning-constraint profile of Grass Flat (Horsham, VIC) - 69.72 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
69.72 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Grass Flat'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.
Grass Flat at a glance
How Grass Flat is zoned
Selling in Grass Flat? 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 Grass Flat address.
Across its 69.72 km², Grass Flat is highly constrained by planning overlays. About 3% 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 804,641 m² across 76 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 Grass Flat 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 →Grass Flat planning - frequently asked
Where can I see a flood map of Grass Flat?
The schematic on this page is a Grass Flat 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 Grass Flat address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Grass Flat flood-prone?
About 3% of Grass Flat falls within a mapped flood overlay, against a Horsham average of 15%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Grass Flat bushfire-prone?
Yes - around 100% of Grass Flat is mapped as bushfire-prone, compared with a Horsham average of 98%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Grass Flat?
The dominant planning zone in Grass Flat is Farming Zone (FZ), though the suburb also includes Public Conservation and Resource Zone (PCRZ). Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Grass Flat have heritage-listed places?
No heritage-listed places are on record within Grass Flat. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Grass Flat?
Across 76 surveyed parcels in Grass Flat, the median lot size is about 804,641 m². There are also 29 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.
Do I need a planning report for a Grass Flat property?
A Grass Flat 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.