Netherby flood map & planning overlays
A planning-constraint profile of Netherby
(City of Mitcham, SA) - 1.21 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
1.21 km² - this suburb is relatively unconstrained by planning overlays.
Elevation hillshade with street names, clipped to Netherby'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 Netherby
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 1 a day
Night movements: observed, lowest 5,500 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.
Netherby at a glance
How Netherby is zoned
Selling in Netherby? 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 1.21 km², Netherby is relatively unconstrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 5% is flagged bushfire-prone. There are 6 heritage-listed sites on record, and the dominant land-use zone is Suburban Neighbourhood. The median lot measures about 813 m² across 648 parcels.
Who lives in Netherby
Census 2021 figures published by the ABS for the Netherby 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 1132, and decile 10 within South Australia. The national average is 1000.
Age profile
Share of Netherby's 1,510 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mitcham (SA), the wider ABS statistical area containing Netherby. There is no annual population series published at suburb level, so this describes the surrounding area rather than Netherby itself.
15,685 in 2001 to 17,169 in 2025, up 9%.
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.
Netherby 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 Netherby 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 19% of Netherby. 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 Netherby lot.
See what's in the $9 report →Netherby planning - frequently asked
Is Netherby flood-prone?
Flood mapping covers Netherby and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 12%).
Is Netherby bushfire-prone?
Around 5% of Netherby is mapped as bushfire-prone, compared with a City of Mitcham average of 53%.
Is Netherby under a flight path?
Aircraft were observed below 3,000 ft over about 19% of Netherby, and over about 78% 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 1,500 ft, with an average of 3,500 ft. At the busiest point in the suburb about 1 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 Netherby?
The dominant planning zone in Netherby is Suburban Neighbourhood, though the suburb also includes Community Facilities and Established Neighbourhood.
Does Netherby have heritage-listed places?
Netherby has 6 heritage-listed places on record.
What is the typical lot size in Netherby?
Across 648 surveyed parcels in Netherby, the median lot size is about 813 m².
Does Netherby have a train station?
There is no train station inside Netherby itself. The suburb is served by 10 bus stops.
What is the population of Netherby?
At the 2021 Census Netherby had 1,510 usual residents, with a median age of 43 and an average household size of 2.7 people. The wider Mitcham (SA) statistical area, which contains Netherby, went from 15,685 people in 2001 to 17,169 in 2025, up 9%.
Is Netherby an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Netherby scores 1132 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 Netherby?
Median household income in Netherby was $2,537 a week at the 2021 Census, against $2,139 for the typical suburb in City of Mitcham. Median rent was $380 a week and the median mortgage repayment $2,383 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Kingswood | 0.8 km | <1% | 0% |
| Highgate City of Unley |
0.9 km | 0% | 0% |
| Springfield | 1.3 km | 13% | 80% |
| Urrbrae | 1.5 km | 0% | 56% |
| Myrtle Bank City of Unley |
1.5 km | 10% | 0% |
| Mitcham | 1.5 km | 3% | 79% |
| Malvern City of Unley |
1.5 km | 20% | 0% |
| Hawthorn | 1.7 km | 24% | 0% |
| Torrens Park | 1.9 km | 13% | 60% |
| Fullarton City of Unley |
2.0 km | 10% | 0% |