Gretna flood map & planning overlays
A planning-constraint profile of Gretna (Central Highlands, TAS) - 132.82 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
132.82 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Gretna'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.
Gretna at a glance
How Gretna is zoned
Buying in Gretna? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title - a $9 planning report pulls them at the lot level for any Gretna address.
Across its 132.82 km², Gretna is highly constrained by planning overlays. About 2% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 17 heritage-listed sites on record, and the dominant land-use zone is Agriculture. The median lot measures about 182,412 m² across 187 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.
Gretna 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 Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Bushfire-prone mapping | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Zoning | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Heritage and environment | Mapped where published | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| 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 Gretna 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 →Gretna planning - frequently asked
Where can I see a flood map of Gretna?
The schematic on this page is a Gretna flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 2% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Gretna address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Gretna flood-prone?
About 2% of Gretna falls within a mapped flood overlay, against the council-wide suburb average of 1%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Gretna bushfire-prone?
Yes - around 100% of Gretna is mapped as bushfire-prone, compared with a Central Highlands average of 96%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Gretna?
The dominant planning zone in Gretna is Agriculture, though the suburb also includes Rural and Environmental Management. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Gretna have heritage-listed places?
Gretna has 17 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 Gretna?
Across 187 surveyed parcels in Gretna, the median lot size is about 182,412 m². There are also 131 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 Gretna property?
A Gretna 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 |
|---|---|---|---|
| Pelham | 8.3 km | <1% | 100% |
| Rosegarland Derwent Valley |
8.8 km | 1% | 100% |
| Glenora Derwent Valley |
9.1 km | 9% | 97% |
| Macquarie Plains Derwent Valley |
9.3 km | 18% | 91% |
| Meadowbank | 10.4 km | 1% | 100% |
| Black Hills Derwent Valley |
10.6 km | <1% | 100% |
| Karanja Derwent Valley |
10.7 km | 3% | 100% |
| Bushy Park Derwent Valley |
11.8 km | 9% | 91% |
| Hamilton | 12.1 km | 1% | 100% |
| Hayes Derwent Valley |
12.6 km | 5% | 100% |