Grassdale flood map & planning overlays
A planning-constraint profile of Grassdale
(Toowoomba Regional, QLD) - 73.5 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 19 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
73.5 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Grassdale's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
How common is mapped flood risk across Grassdale properties?
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched in a suburb-wide analysis of 2 Grassdale properties. No individual property result is identified on this page.
Lot-level readout
Flood-risk rating across all 2 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Grassdale.
Grassdale at a glance
Schools in and near Grassdale
Public school-location data shows availability across the suburb. These figures do not rate schools and do not assign a particular address to a catchment.
Inside the suburb boundary
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 8.85 km from the suburb boundary
Secondary: 8.85 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time; use the official catchment finder for a specific address.
How Grassdale is zoned
Selling in Grassdale? The lot-level zone is the zoning Part 3 of Queensland's Form 2 seller disclosure statement asks for - see our Form 2 planning data guide.
Across its 73.5 km², Grassdale is highly constrained by planning overlays. About 69% of the suburb sits within a mapped flood overlay, and 4% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is largely flat, and the median lot measures about 8,261,401 m² across 4 parcels.
Who lives in Grassdale
Census 2021 figures published by the ABS for the Grassdale suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 1072, and decile 10 within Queensland. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Jondaryan, the wider ABS statistical area containing Grassdale. There is no annual population series published at suburb level, so this describes the surrounding area rather than Grassdale itself.
7,104 in 2001 to 7,826 in 2025, up 10%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Grassdale data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Bushfire-prone mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Zoning | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Heritage and environment | Mapped where published | the relevant council planning scheme and Queensland Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the relevant council planning scheme and Queensland Government spatial data, Defence |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
Profile last materially updated 19 September 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Grassdale 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.
Published flood models are held over parts of Grassdale. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
The Terrain Report shows the fall of the block - contours, cross sections and a 3D model of the lot (+$9 with the planning report).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Grassdale lot.
See what's in the $9 report →Grassdale planning - frequently asked
Is Grassdale flood-prone?
About 69% of Grassdale falls within a mapped flood overlay, against the council-wide suburb average of 24%. Across the suburb, 100% of the 2 properties we analysed carry some level of mapped flood risk, including 2 rated high risk or historically affected.
Is Grassdale bushfire-prone?
Around 4% of Grassdale is mapped as bushfire-prone, compared with a Toowoomba Regional average of 20%.
What is the zoning in Grassdale?
The dominant planning zone in Grassdale is Rural.
Does Grassdale have heritage-listed places?
No heritage-listed places are on record within Grassdale.
Is Grassdale hilly or flat?
Grassdale is largely flat: the median ground slope is about 0%. Ground level runs from roughly 347 m to 347 m AHD across the suburb.
What is the typical lot size in Grassdale?
Across 4 surveyed parcels in Grassdale, the median lot size is about 8,261,401 m². There are also 4 registered easements mapped in the suburb.
Is Grassdale an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Grassdale scores 1072 and sits in decile 10 of 10 nationally and decile 10 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Springvale Western Downs Regional |
8.2 km | 98% | 5% |
| Cecil Plains | 10.4 km | 63% | 12% |
| Tipton | 13.8 km | 100% | 6% |
| Nandi Western Downs Regional |
14.6 km | 93% | 14% |
| Halliford Western Downs Regional |
17.7 km | 41% | 97% |
| St Ruth Western Downs Regional |
17.9 km | 99% | 7% |
| Ducklo Western Downs Regional |
18.8 km | 86% | 26% |
| St Ruth | 19.5 km | 97% | <1% |
| Nangwee | 20.7 km | 99% | <1% |
| West Prairie | 26.4 km | 98% | 0% |