St Helens flood map & planning overlays
A planning-constraint profile of St Helens (Break O'Day, TAS) - 224.17 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
224.17 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to St Helens'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 Helens at a glance
How St Helens is zoned
Buying in St Helens? 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 St Helens address.
Across its 224.17 km², St Helens is highly constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 98% is flagged bushfire-prone. There are 6 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 1,006 m² across 2,096 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 Helens 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 St Helens 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 Helens planning - frequently asked
Where can I see a flood map of St Helens?
The schematic on this page is a St Helens flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 7% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any St Helens address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is St Helens flood-prone?
About 7% of St Helens falls within a mapped flood overlay, against the council-wide suburb average of 9%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is St Helens bushfire-prone?
Yes - around 98% of St Helens is mapped as bushfire-prone, compared with a Break O'Day average of 99%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in St Helens?
The dominant planning zone in St Helens is Rural, though the suburb also includes Environmental Management and Landscape Conservation. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does St Helens have heritage-listed places?
St Helens has 6 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 Helens?
Across 2,096 surveyed parcels in St Helens, the median lot size is about 1,006 m². There are also 345 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 St Helens property?
A St Helens 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 |
|---|---|---|---|
| Stieglitz | 8.4 km | 10% | 96% |
| Goshen | 8.7 km | 4% | 100% |
| Binalong Bay | 9.3 km | 6% | 97% |
| Akaroa | 11.1 km | 24% | 99% |
| Beaumaris | 12.5 km | 5% | 99% |
| Upper Scamander | 15.1 km | 6% | 100% |
| The Gardens | 17.4 km | 10% | 99% |
| Scamander | 17.6 km | 18% | 97% |
| Goulds Country | 17.7 km | 4% | 100% |
| Lottah | 19.1 km | 4% | 100% |