Lock flood map & planning overlays
A planning-constraint profile of Lock (District Council of Elliston, SA) - 637.3 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
637.3 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lock'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.
Lock at a glance
How Lock is zoned
Selling in Lock? 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 Lock address.
Across its 637.3 km², Lock is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 32,560 m² across 351 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.
Lock 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 Lock 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 →Lock planning - frequently asked
Where can I see a flood map of Lock?
The schematic on this page is a Lock flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 100% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Lock address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Lock flood-prone?
About 100% of Lock falls within a mapped flood overlay, against the council-wide suburb average of 99%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Lock bushfire-prone?
Yes - around 100% of Lock is mapped as bushfire-prone, compared with a District Council of Elliston average of 99%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Lock?
The dominant planning zone in Lock is Rural, though the suburb also includes Employment (Bulk Handling) and Neighbourhood. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Lock have heritage-listed places?
No heritage-listed places are on record within Lock. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Lock?
Across 351 surveyed parcels in Lock, the median lot size is about 32,560 m².
Do I need a planning report for a Lock property?
A Lock 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 |
|---|---|---|---|
| Murdinga | 16.1 km | 100% | 100% |
| Ulyerra | 20.0 km | 100% | 100% |
| Boonerdo The District Council of Cleve |
22.8 km | 100% | 100% |
| Polda | 24.8 km | 100% | 100% |
| Murlong The District Council of Cleve |
26.2 km | 100% | 100% |
| Hambidge The District Council of Cleve |
26.3 km | 100% | 100% |
| Tooligie | 29.5 km | 100% | 100% |
| Palkagee | 34.2 km | 100% | 100% |
| Hincks The District Council of Cleve |
36.5 km | 100% | 100% |
| Kappawanta | 38.5 km | 100% | 100% |