St Marys flood map & planning overlays
A planning-constraint profile of St Marys (City of Mitcham, SA) - 1.83 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
1.83 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to St Marys'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.
St Marys at a glance
How St Marys is zoned
Selling in St Marys? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose - a $9 planning report pulls them at the lot level for any St Marys address.
Across its 1.83 km², St Marys is highly constrained by planning overlays. About 29% of the suburb sits within a mapped flood overlay, and 41% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Suburban Neighbourhood. The median lot measures about 489 m² across 1,822 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.
St Marys data sources and coverage
Every figure below is an aggregate for the suburb boundary. “Not mapped” means LayeredGeo does not hold a source layer covering this suburb; it is never an all-clear for a particular property.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Demographics | Not available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 20 August 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 St Marys 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 →St Marys planning - frequently asked
Where can I see a flood map of St Marys?
The schematic on this page is a St Marys flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 29% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any St Marys address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is St Marys flood-prone?
About 29% of St Marys falls within a mapped flood overlay, against the council-wide suburb average of 34%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is St Marys bushfire-prone?
Yes - around 41% of St Marys is mapped as bushfire-prone, compared with a City of Mitcham average of 53%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in St Marys?
The dominant planning zone in St Marys is Suburban Neighbourhood, though the suburb also includes Employment and Conservation. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does St Marys have heritage-listed places?
St Marys has 3 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.
What is the typical lot size in St Marys?
Across 1,822 surveyed parcels in St Marys, the median lot size is about 489 m².
Does St Marys have a train station?
There is no train station inside St Marys itself. The suburb is served by 17 bus stops.
Do I need a planning report for a St Marys property?
A St Marys 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.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Pasadena | 0.8 km | 14% | 39% |
| Clovelly Park City of Marion |
1.0 km | 99% | 0% |
| Tonsley City of Marion |
1.0 km | 100% | 56% |
| Panorama | 1.6 km | 16% | 60% |
| Mitchell Park City of Marion |
1.6 km | 95% | 4% |
| Melrose Park | 2.1 km | 30% | 0% |
| Bedford Park | 2.3 km | 79% | 98% |
| Eden Hills | 2.4 km | 10% | 100% |
| Ascot Park City of Marion |
2.4 km | 100% | 0% |
| Marion City of Marion |
2.4 km | 63% | 0% |