Ridgehaven flood map & planning overlays
A planning-constraint profile of Ridgehaven
(City of Tea Tree Gully, SA) - 2.11 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
2.11 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Ridgehaven'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 Ridgehaven
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 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.
Ridgehaven at a glance
How Ridgehaven is zoned
Selling in Ridgehaven? 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 2.11 km², Ridgehaven is moderately constrained by planning overlays. About 14% of the suburb sits within a mapped flood overlay. There are 3 heritage-listed sites on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 587 m² across 2,194 parcels.
Who lives in Ridgehaven
Census 2021 figures published by the ABS for the Ridgehaven 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 956, and decile 4 within South Australia. The national average is 1000.
Age profile
Share of Ridgehaven's 4,304 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of St Agnes - Ridgehaven, the wider ABS statistical area containing Ridgehaven. There is no annual population series published at suburb level, so this describes the surrounding area rather than Ridgehaven itself.
12,678 in 2001 to 13,531 in 2025, up 7%.
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.
Ridgehaven 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 Ridgehaven 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 39% of Ridgehaven. 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 Ridgehaven lot.
See what's in the $9 report →Ridgehaven planning - frequently asked
Is Ridgehaven flood-prone?
About 14% of Ridgehaven falls within a mapped flood overlay, against the council-wide suburb average of 16%.
Is Ridgehaven bushfire-prone?
Bushfire mapping covers Ridgehaven and little to none of it is mapped as bushfire-prone (the City of Tea Tree Gully average is 36%).
Is Ridgehaven under a flight path?
Aircraft were observed below 3,000 ft over about 39% of Ridgehaven, and over about 92% 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 3,500 ft. At the busiest point in the suburb about 77 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 Ridgehaven?
The dominant planning zone in Ridgehaven is General Neighbourhood, though the suburb also includes Recreation and Housing Diversity Neighbourhood.
Does Ridgehaven have heritage-listed places?
Ridgehaven has 3 heritage-listed places on record.
What is the typical lot size in Ridgehaven?
Across 2,194 surveyed parcels in Ridgehaven, the median lot size is about 587 m².
Does Ridgehaven have a train station?
There is no train station inside Ridgehaven itself. The suburb is served by 24 bus stops.
What is the population of Ridgehaven?
At the 2021 Census Ridgehaven had 4,304 usual residents, with a median age of 43 and an average household size of 2.3 people. The wider St Agnes - Ridgehaven statistical area, which contains Ridgehaven, went from 12,678 people in 2001 to 13,531 in 2025, up 7%.
Is Ridgehaven an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Ridgehaven scores 956 and sits in decile 4 of 10 nationally and decile 4 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Ridgehaven?
Median household income in Ridgehaven was $1,307 a week at the 2021 Census, against $1,703 for the typical suburb in City of Tea Tree Gully. Median rent was $320 a week and the median mortgage repayment $1,436 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| St Agnes | 1.1 km | 25% | <1% |
| Redwood Park | 1.1 km | 13% | 0% |
| Modbury Heights | 2.0 km | 10% | 0% |
| Modbury North | 2.1 km | 13% | 0% |
| Modbury | 2.2 km | 25% | 0% |
| Banksia Park | 2.6 km | 15% | 57% |
| Wynn Vale | 2.7 km | 17% | 23% |
| Surrey Downs | 2.8 km | 12% | 0% |
| Hope Valley | 2.9 km | 11% | 4% |
| Tea Tree Gully | 2.9 km | 11% | 82% |