O'Sullivan Beach flood map & planning overlays

A planning-constraint profile of O'Sullivan Beach (City of Onkaparinga, SA) - 1.88 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.

Planning schematicO'Sullivan Beach

Constraint readout

1.88 km² - this suburb is highly constrained by planning overlays.

Flood overlay 56%

1.4× council avg (40%) · #17 of 47 mapped council suburbs

Bushfire-prone 78%

≈ council avg (69%) · #27 of 47 mapped council suburbs

Environmental17%

1.5× council avg (12%) · #15 of 47 in council

Heritage sites 1 Mostly General Neighbourhood

Elevation hillshade with street names, clipped to O'Sullivan Beach'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.

O'Sullivan Beach at a glance

Parcels 1,103 Median lot 663 m² Bus stops 15

How O'Sullivan Beach is zoned

General Neighbourhood 59%

Conservation 16%

Infrastructure 15%

Strategic Employment 9%

Local Activity Centre 0%

Coastal Waters and Offshore Islands 0%

Selling in O'Sullivan Beach? 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 O'Sullivan Beach address.

Across its 1.88 km², O'Sullivan Beach is highly constrained by planning overlays. About 56% of the suburb sits within a mapped flood overlay, and 78% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 663 m² across 1,103 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.

O'Sullivan Beach 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 O'Sullivan Beach 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 →

O'Sullivan Beach planning - frequently asked

Where can I see a flood map of O'Sullivan Beach?

The schematic on this page is a O'Sullivan Beach flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 56% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any O'Sullivan Beach address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.

Is O'Sullivan Beach flood-prone?

About 56% of O'Sullivan Beach falls within a mapped flood overlay, against the council-wide suburb average of 40%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Is O'Sullivan Beach bushfire-prone?

Yes - around 78% of O'Sullivan Beach is mapped as bushfire-prone, compared with a City of Onkaparinga average of 69%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

What is the zoning in O'Sullivan Beach?

The dominant planning zone in O'Sullivan Beach is General Neighbourhood, though the suburb also includes Conservation and Infrastructure. Zoning sets what you can build and do on a site, and can differ lot by lot.

Does O'Sullivan Beach have heritage-listed places?

O'Sullivan Beach 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 O'Sullivan Beach?

Across 1,103 surveyed parcels in O'Sullivan Beach, the median lot size is about 663 m².

Does O'Sullivan Beach have a train station?

There is no train station inside O'Sullivan Beach itself. The suburb is served by 15 bus stops.

Do I need a planning report for a O'Sullivan Beach property?

An O'Sullivan Beach 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
Christies Beach	1.3 km	93%	37%
Christie Downs	1.9 km	99%	0%
Lonsdale	2.2 km	3%	47%
Noarlunga Centre	2.8 km	100%	0%
Port Noarlunga	3.5 km	61%	46%
Hackham West	4.2 km	32%	0%
Noarlunga Downs	4.7 km	69%	18%
Morphett Vale	4.7 km	66%	25%
Port Noarlunga South	4.8 km	71%	45%
Reynella	5.0 km	61%	0%

See all City of Onkaparinga suburb profiles →