Modbury Heights flood map & planning overlays
A planning-constraint profile of Modbury Heights
(City of Tea Tree Gully, SA) - 3.25 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
3.25 km² - this suburb is relatively unconstrained by planning overlays.
Elevation hillshade with street names, clipped to Modbury Heights'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 Modbury Heights
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 26 Sep 2026
typical observed square 4 a day
Night movements: observed, lowest 3,000 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.
Modbury Heights at a glance
How Modbury Heights is zoned
Selling in Modbury Heights? 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 3.25 km², Modbury Heights is relatively unconstrained by planning overlays. About 10% of the suburb sits within a mapped flood overlay. The dominant land-use zone is General Neighbourhood. The median lot measures about 646 m² across 2,984 parcels.
Who lives in Modbury Heights
Census 2021 figures published by the ABS for the Modbury Heights 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 978, and decile 5 within South Australia. The national average is 1000.
Age profile
Share of Modbury Heights's 6,995 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Modbury Heights, the wider ABS statistical area containing Modbury Heights. There is no annual population series published at suburb level, so this describes the surrounding area rather than Modbury Heights itself.
21,013 in 2001 to 19,813 in 2025, down 6%.
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.
Modbury Heights 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 26 September 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 Modbury Heights 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 14% of Modbury Heights. 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 Modbury Heights lot.
See what's in the $9 report →Modbury Heights planning - frequently asked
Is Modbury Heights flood-prone?
About 10% of Modbury Heights falls within a mapped flood overlay, against the council-wide suburb average of 16%.
Is Modbury Heights bushfire-prone?
Bushfire mapping covers Modbury Heights and little to none of it is mapped as bushfire-prone (the City of Tea Tree Gully average is 36%).
Is Modbury Heights under a flight path?
Aircraft were observed below 3,000 ft over about 14% of Modbury Heights, and over about 76% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 26 Sep 2026). The lowest measured aircraft was at 500 ft, with an average of 5,000 ft. At the busiest point in the suburb about 5 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 Modbury Heights?
The dominant planning zone in Modbury Heights is General Neighbourhood, though the suburb also includes Open Space and Suburban Activity Centre.
Does Modbury Heights have heritage-listed places?
No heritage-listed places are on record within Modbury Heights.
What is the typical lot size in Modbury Heights?
Across 2,984 surveyed parcels in Modbury Heights, the median lot size is about 646 m². There are also 18 registered easements mapped in the suburb.
Does Modbury Heights have a train station?
There is no train station inside Modbury Heights itself. The suburb is served by 38 bus stops.
What is the population of Modbury Heights?
At the 2021 Census Modbury Heights had 6,995 usual residents, with a median age of 40 and an average household size of 2.6 people. The wider Modbury Heights statistical area, which contains Modbury Heights, went from 21,013 people in 2001 to 19,813 in 2025, down 6%.
Is Modbury Heights an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Modbury Heights scores 978 and sits in decile 5 of 10 nationally and decile 5 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Modbury Heights?
Median household income in Modbury Heights was $1,573 a week at the 2021 Census, against $1,703 for the typical suburb in City of Tea Tree Gully. Median rent was $340 a week and the median mortgage repayment $1,495 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Wynn Vale | 1.3 km | 17% | 23% |
| Modbury North | 1.4 km | 13% | 0% |
| Redwood Park | 1.9 km | 13% | 0% |
| Ridgehaven | 2.0 km | 14% | 0% |
| Gulfview Heights City of Salisbury |
2.5 km | 10% | 43% |
| Para Vista City of Salisbury |
2.6 km | 3% | 0% |
| Para Hills City of Salisbury |
2.7 km | 17% | 0% |
| Modbury | 2.8 km | 25% | 0% |
| Surrey Downs | 2.9 km | 12% | 0% |
| St Agnes | 3.0 km | 25% | <1% |