Isabella Plains flood map & planning overlays
A planning-constraint profile of Isabella Plains
(Tuggeranong, ACT) - 2.5 km², mapped from live district 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
2.5 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Isabella Plains'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 Isabella Plains
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
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Isabella Plains at a glance
How Isabella Plains is zoned
Buying in Isabella Plains? The Territory Plan zone on this page sits alongside the Crown lease, which sets what a block may actually be used for.
Across its 2.5 km², Isabella Plains is moderately constrained by planning overlays. About 9% of the suburb sits within a mapped flood overlay, and 11% is flagged bushfire-prone. The dominant land-use zone is Suburban. The median lot measures about 773 m² across 1,217 parcels.
Who lives in Isabella Plains
Census 2021 figures published by the ABS for the Isabella Plains 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 1033, and decile 1 within the Australian Capital Territory. The national average is 1000.
Age profile
Share of Isabella Plains's 4,329 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Isabella Plains, the wider ABS statistical area containing Isabella Plains. There is no annual population series published at suburb level, so this describes the surrounding area rather than Isabella Plains itself.
4,590 in 2001 to 4,324 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.
Isabella Plains 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 ACT Territory Plan and ACT Government spatial data |
| Bushfire-prone mapping | Mapped | the ACT Territory Plan and ACT Government spatial data |
| Zoning | Mapped | the ACT Territory Plan and ACT Government spatial data |
| Heritage and environment | Mapped where published | the ACT Territory Plan and ACT Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the ACT Territory Plan and ACT Government 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 Isabella Plains 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.
The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Isabella Plains. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
See what's in the $9 report →Isabella Plains planning - frequently asked
Is Isabella Plains flood-prone?
About 9% of Isabella Plains falls within a mapped flood overlay, against the district-wide suburb average of 3%. Published flood models are held over parts of Isabella Plains; the free check on the Flood Model Report page says whether one reaches a given address.
Is Isabella Plains bushfire-prone?
Around 11% of Isabella Plains is mapped as bushfire-prone, compared with a Tuggeranong average of 35%.
Is Isabella Plains under a flight path?
Aircraft were observed over about 21% of Isabella Plains in the period sampled, but only above 3,000 ft - the lowest measured was 3,000 ft. 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 Isabella Plains?
The dominant planning zone in Isabella Plains is Suburban, though the suburb also includes Urban Open Space and Transport.
Does Isabella Plains have heritage-listed places?
No heritage-listed places are on record within Isabella Plains.
What is the typical lot size in Isabella Plains?
Across 1,217 surveyed parcels in Isabella Plains, the median lot size is about 773 m². There are also 1,912 registered easements mapped in the suburb.
Does Isabella Plains have a train station?
There is no train station inside Isabella Plains itself. The suburb is served by 23 bus stops.
What is the population of Isabella Plains?
At the 2021 Census Isabella Plains had 4,329 usual residents, with a median age of 36 and an average household size of 2.6 people. The wider Isabella Plains statistical area, which contains Isabella Plains, went from 4,590 people in 2001 to 4,324 in 2025, down 6%.
Is Isabella Plains an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Isabella Plains scores 1033 and sits in decile 8 of 10 nationally and decile 1 within the Australian Capital Territory (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Isabella Plains?
Median household income in Isabella Plains was $2,131 a week at the 2021 Census, against $2,357 for the typical suburb in Tuggeranong. Median rent was $450 a week and the median mortgage repayment $1,880 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Richardson | 1.3 km | 3% | 29% |
| Bonython | 1.5 km | 0% | 59% |
| Monash | 1.7 km | 8% | 15% |
| Calwell | 1.8 km | 1% | 27% |
| Gowrie | 2.4 km | 2% | 10% |
| Chisholm | 2.6 km | <1% | 17% |
| Oxley | 2.7 km | <1% | 26% |
| Greenway | 3.1 km | 15% | 46% |
| Theodore | 3.2 km | <1% | 59% |
| Conder | 3.2 km | 0% | 56% |