Balhannah flood map & planning overlays
A planning-constraint profile of Balhannah
(Adelaide Hills Council, SA) - 30.84 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
30.84 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Balhannah's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Balhannah
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 3 Oct 2026
typical observed square 7 a day
Night movements: observed, lowest 7,000 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Balhannah at a glance
How Balhannah is zoned
Selling in Balhannah? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 30.84 km², Balhannah is highly constrained by planning overlays. About 3% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 15 heritage-listed sites on record, and the dominant land-use zone is Productive Rural Landscape. The median lot measures about 1,095 m² across 837 parcels.
Who lives in Balhannah
Census 2021 figures published by the ABS for the Balhannah suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 1051, and decile 9 within South Australia. The national average is 1000.
Age profile
Share of Balhannah's 1,756 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lobethal - Woodside, the wider ABS statistical area containing Balhannah. There is no annual population series published at suburb level, so this describes the surrounding area rather than Balhannah itself.
8,343 in 2001 to 9,996 in 2025, up 20%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Balhannah data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| 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 |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 3 October 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 Balhannah 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.
Aircraft have been seen below 3,000 ft over about 18% of Balhannah. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Balhannah lot.
See what's in the $9 report →Balhannah planning - frequently asked
Is Balhannah flood-prone?
About 3% of Balhannah falls within a mapped flood overlay, against the council-wide suburb average of 1%.
Is Balhannah bushfire-prone?
Around 100% of Balhannah is mapped as bushfire-prone, compared with a Adelaide Hills Council average of 100%.
Is Balhannah under a flight path?
Aircraft were observed below 3,000 ft over about 18% of Balhannah, and over about 57% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 3 Oct 2026). The lowest measured aircraft was at 1,000 ft, with an average of 7,000 ft. At the busiest point in the suburb about 19 aircraft a day were recorded passing over one 500 m square. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Balhannah?
The dominant planning zone in Balhannah is Productive Rural Landscape, though the suburb also includes Township and Conservation.
Does Balhannah have heritage-listed places?
Balhannah has 15 heritage-listed places on record.
What is the typical lot size in Balhannah?
Across 837 surveyed parcels in Balhannah, the median lot size is about 1,095 m².
Does Balhannah have a train station?
There is no train station inside Balhannah itself. The suburb is served by 10 bus stops.
What is the population of Balhannah?
At the 2021 Census Balhannah had 1,756 usual residents, with a median age of 44 and an average household size of 2.7 people. The wider Lobethal - Woodside statistical area, which contains Balhannah, went from 8,343 people in 2001 to 9,996 in 2025, up 20%.
Is Balhannah an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Balhannah scores 1051 and sits in decile 9 of 10 nationally and decile 9 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Balhannah?
Median household income in Balhannah was $1,851 a week at the 2021 Census, against $2,089 for the typical suburb in Adelaide Hills Council. Median rent was $335 a week and the median mortgage repayment $1,647 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Verdun | 2.6 km | 11% | 100% |
| Oakbank | 4.2 km | 2% | 100% |
| Mount George | 4.4 km | <1% | 100% |
| Hahndorf Mount Barker District Council |
4.4 km | 3% | 100% |
| Bridgewater | 5.0 km | 4% | 100% |
| Carey Gully | 5.1 km | 0% | 100% |
| Mount Barker Junction Mount Barker District Council |
6.2 km | 0% | 100% |
| Totness Mount Barker District Council |
6.3 km | 0% | 100% |
| Paechtown Mount Barker District Council |
6.5 km | 0% | 100% |
| Littlehampton Mount Barker District Council |
6.7 km | 0% | 100% |