Heddon Greta flood map & planning overlays
A planning-constraint profile of Heddon Greta
(Cessnock, NSW) - 4.8 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
4.8 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Heddon Greta'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 Heddon Greta
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 2 Oct 2026
typical observed square 1 a day
Night movements: observed, lowest 2,000 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.
Heddon Greta at a glance
How Heddon Greta is zoned
Buying in Heddon Greta? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 4.8 km², Heddon Greta is highly constrained by planning overlays. About 18% of the suburb sits within a mapped flood overlay, and 60% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 724 m² across 1,591 parcels.
Who lives in Heddon Greta
Census 2021 figures published by the ABS for the Heddon Greta 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 960, and decile 4 within New South Wales. The national average is 1000.
Age profile
Share of Heddon Greta's 2,838 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Kurri Kurri - Abermain, the wider ABS statistical area containing Heddon Greta. There is no annual population series published at suburb level, so this describes the surrounding area rather than Heddon Greta itself.
15,222 in 2001 to 23,407 in 2025, up 54%.
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.
Heddon Greta 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 | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, 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 Heddon Greta 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 55% of Heddon Greta. 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 Heddon Greta lot.
See what's in the $9 report →Heddon Greta planning - frequently asked
Is Heddon Greta flood-prone?
About 18% of Heddon Greta falls within a mapped flood overlay, against the council-wide suburb average of 17%.
Is Heddon Greta bushfire-prone?
Around 60% of Heddon Greta is mapped as bushfire-prone, compared with a Cessnock average of 91%.
Is Heddon Greta under a flight path?
Aircraft were observed below 3,000 ft over about 55% of Heddon Greta, and over about 60% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 1,000 ft, with an average of 3,000 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 Heddon Greta?
The dominant planning zone in Heddon Greta is Low Density Residential, though the suburb also includes Rural Landscape and Environmental Conservation.
Does Heddon Greta have heritage-listed places?
Heddon Greta has 3 heritage-listed places on record.
What is the typical lot size in Heddon Greta?
Across 1,591 surveyed parcels in Heddon Greta, the median lot size is about 724 m². There are also 8 registered easements mapped in the suburb.
Does Heddon Greta have a train station?
There is no train station inside Heddon Greta itself. The suburb is served by 38 bus stops.
What is the population of Heddon Greta?
At the 2021 Census Heddon Greta had 2,838 usual residents, with a median age of 33 and an average household size of 2.9 people. The wider Kurri Kurri - Abermain statistical area, which contains Heddon Greta, went from 15,222 people in 2001 to 23,407 in 2025, up 54%.
Is Heddon Greta an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Heddon Greta scores 960 and sits in decile 4 of 10 nationally and decile 4 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Heddon Greta?
Median household income in Heddon Greta was $2,130 a week at the 2021 Census, against $1,929 for the typical suburb in Cessnock. Median rent was $420 a week and the median mortgage repayment $1,950 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Buchanan | 2.4 km | 30% | 96% |
| Cliftleigh | 2.4 km | 58% | 76% |
| Stanford Merthyr | 2.4 km | 11% | 80% |
| Loxford | 2.4 km | 30% | 93% |
| Kurri Kurri | 2.6 km | 20% | 31% |
| Pelaw Main | 4.3 km | 13% | 95% |
| Weston | 4.8 km | 23% | 75% |
| Louth Park Maitland |
5.1 km | 69% | 90% |
| Gillieston Heights Maitland |
5.3 km | 56% | 62% |
| Buttai | 5.8 km | 11% | 100% |