Hawthorndene flood map & planning overlays
A planning-constraint profile of Hawthorndene
(City of Mitcham, SA) - 5.05 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
5.05 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Hawthorndene'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 Hawthorndene
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 0 a day
Night movements: observed, lowest 6,500 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.
Hawthorndene at a glance
How Hawthorndene is zoned
Selling in Hawthorndene? 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 5.05 km², Hawthorndene 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 10 heritage-listed sites on record, and the dominant land-use zone is Hills Face. The median lot measures about 1,109 m² across 1,379 parcels.
Who lives in Hawthorndene
Census 2021 figures published by the ABS for the Hawthorndene 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 1080, and decile 10 within South Australia. The national average is 1000.
Age profile
Share of Hawthorndene's 3,389 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Blackwood, the wider ABS statistical area containing Hawthorndene. There is no annual population series published at suburb level, so this describes the surrounding area rather than Hawthorndene itself.
10,314 in 2001 to 13,858 in 2025, up 34%.
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.
Hawthorndene 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 Hawthorndene 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 32% of Hawthorndene. 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 Hawthorndene lot.
See what's in the $9 report →Hawthorndene planning - frequently asked
Is Hawthorndene flood-prone?
About 3% of Hawthorndene falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Hawthorndene bushfire-prone?
Around 100% of Hawthorndene is mapped as bushfire-prone, compared with a City of Mitcham average of 53%.
Is Hawthorndene under a flight path?
Aircraft were observed below 3,000 ft over about 32% of Hawthorndene, and over about 62% 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 4,000 ft. At the busiest point in the suburb about 0 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 Hawthorndene?
The dominant planning zone in Hawthorndene is Hills Face, though the suburb also includes Hills Neighbourhood and Conservation.
Does Hawthorndene have heritage-listed places?
Hawthorndene has 10 heritage-listed places on record.
What is the typical lot size in Hawthorndene?
Across 1,379 surveyed parcels in Hawthorndene, the median lot size is about 1,109 m².
Does Hawthorndene have a train station?
There is no train station inside Hawthorndene itself. The suburb is served by 24 bus stops.
What is the population of Hawthorndene?
At the 2021 Census Hawthorndene had 3,389 usual residents, with a median age of 41 and an average household size of 2.8 people. The wider Blackwood statistical area, which contains Hawthorndene, went from 10,314 people in 2001 to 13,858 in 2025, up 34%.
Is Hawthorndene an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Hawthorndene scores 1080 and sits in decile 10 of 10 nationally and decile 10 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Hawthorndene?
Median household income in Hawthorndene was $2,139 a week at the 2021 Census, against $2,139 for the typical suburb in City of Mitcham. Median rent was $400 a week and the median mortgage repayment $1,842 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Glenalta | 1.8 km | 8% | 100% |
| Blackwood | 2.2 km | 6% | 100% |
| Coromandel Valley City of Onkaparinga |
2.5 km | 4% | 100% |
| Coromandel East City of Onkaparinga |
2.6 km | <1% | 100% |
| Belair | 2.7 km | 1% | 100% |
| Craigburn Farm | 3.5 km | 3% | 100% |
| Eden Hills | 3.9 km | 6% | 100% |
| Lynton | 4.2 km | 17% | 100% |
| Panorama | 4.6 km | 16% | 60% |
| Brown Hill Creek | 4.7 km | 0% | 100% |