Buchanan flood map & planning overlays
A planning-constraint profile of Buchanan (The Regional Council of Goyder, SA) - 52.04 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
52.04 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Buchanan'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.
Buchanan at a glance
How Buchanan is zoned
Selling in Buchanan? 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 Buchanan address.
Across its 52.04 km², Buchanan is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Rural. The median lot measures about 429,933 m² across 108 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.
Buchanan 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 Buchanan 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 →Buchanan planning - frequently asked
Where can I see a flood map of Buchanan?
The schematic on this page is a Buchanan 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 Buchanan address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Buchanan flood-prone?
About 100% of Buchanan falls within a mapped flood overlay, against the council-wide suburb average of 100%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Buchanan bushfire-prone?
Yes - around 100% of Buchanan is mapped as bushfire-prone, compared with a The Regional Council of Goyder average of 100%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Buchanan?
The dominant planning zone in Buchanan is Rural. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Buchanan have heritage-listed places?
Buchanan has 1 heritage-listed place 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 Buchanan?
Across 108 surveyed parcels in Buchanan, the median lot size is about 429,933 m².
Do I need a planning report for a Buchanan property?
A Buchanan 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 |
|---|---|---|---|
| Hampden | 5.6 km | 100% | 100% |
| Hansborough | 6.5 km | 100% | 100% |
| Tarnma Clare and Gilbert Valleys Council |
8.2 km | 100% | 100% |
| Eudunda | 9.2 km | 100% | 99% |
| Bagot Well Light Regional Council |
9.8 km | 100% | 100% |
| Hamilton Light Regional Council |
10.0 km | 100% | 100% |
| Julia | 10.3 km | 100% | 100% |
| Allendale North Light Regional Council |
11.8 km | 100% | 100% |
| Marrabel Clare and Gilbert Valleys Council |
14.3 km | 100% | 100% |
| Point Pass | 14.7 km | 100% | 100% |