Holden Hill flood map & planning overlays
A planning-constraint profile of Holden Hill
(City of Tea Tree Gully, SA) - 1.89 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
1.89 km² - this suburb is relatively unconstrained by planning overlays.
Elevation hillshade with street names, clipped to Holden Hill'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 Holden Hill
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 12 a day
Night movements: observed, lowest 2,500 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.
Holden Hill at a glance
How Holden Hill is zoned
Selling in Holden Hill? 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 1.89 km², Holden Hill is relatively unconstrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay. There is 1 heritage-listed site on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 420 m² across 2,106 parcels.
Who lives in Holden Hill
Census 2021 figures published by the ABS for the Holden Hill 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 947, and decile 4 within South Australia. The national average is 1000.
Age profile
Share of Holden Hill's 3,716 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Hope Valley - Modbury, the wider ABS statistical area containing Holden Hill. There is no annual population series published at suburb level, so this describes the surrounding area rather than Holden Hill itself.
16,097 in 2001 to 18,423 in 2025, up 14%.
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.
Holden Hill 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 Holden Hill 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 89% of Holden Hill. 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 Holden Hill lot.
See what's in the $9 report →Holden Hill planning - frequently asked
Is Holden Hill flood-prone?
Flood mapping covers Holden Hill and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 16%).
Is Holden Hill bushfire-prone?
Bushfire mapping covers Holden Hill and little to none of it is mapped as bushfire-prone (the City of Tea Tree Gully average is 36%).
Is Holden Hill under a flight path?
Aircraft were observed below 3,000 ft over about 89% of Holden Hill, and over about 99% 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 3,000 ft. At the busiest point in the suburb about 94 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 Holden Hill?
The dominant planning zone in Holden Hill is General Neighbourhood, though the suburb also includes Employment and Suburban Activity Centre.
Does Holden Hill have heritage-listed places?
Holden Hill has 1 heritage-listed place on record.
What is the typical lot size in Holden Hill?
Across 2,106 surveyed parcels in Holden Hill, the median lot size is about 420 m². There are also 9 registered easements mapped in the suburb.
Does Holden Hill have a train station?
There is no train station inside Holden Hill itself. The suburb is served by 29 bus stops.
What is the population of Holden Hill?
At the 2021 Census Holden Hill had 3,716 usual residents, with a median age of 37 and an average household size of 2.4 people. The wider Hope Valley - Modbury statistical area, which contains Holden Hill, went from 16,097 people in 2001 to 18,423 in 2025, up 14%.
Is Holden Hill an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Holden Hill scores 947 and sits in decile 3 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 Holden Hill?
Median household income in Holden Hill was $1,363 a week at the 2021 Census, against $1,703 for the typical suburb in City of Tea Tree Gully. Median rent was $300 a week and the median mortgage repayment $1,500 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Dernancourt | 1.3 km | 12% | 0% |
| Gilles Plains City of Port Adelaide Enfield |
1.3 km | 4% | 0% |
| Valley View City of Port Adelaide Enfield |
1.6 km | 7% | 0% |
| Paradise Campbelltown City Council |
2.0 km | 5% | <1% |
| Modbury | 2.2 km | 25% | 0% |
| Hope Valley | 2.4 km | 11% | 4% |
| Oakden City of Port Adelaide Enfield |
2.7 km | 0% | 0% |
| Para Vista City of Salisbury |
2.8 km | 3% | 0% |
| Windsor Gardens City of Port Adelaide Enfield |
2.8 km | 4% | 0% |
| Hillcrest City of Port Adelaide Enfield |
3.1 km | 0% | 0% |