Wondabyne flood map & planning overlays
A planning-constraint profile of Wondabyne
(Central Coast, NSW) - 29.09 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
29.09 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Wondabyne'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 Wondabyne
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.
Wondabyne at a glance
How Wondabyne is zoned
Buying in Wondabyne? 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 29.09 km², Wondabyne is highly constrained by planning overlays. About 16% of the suburb sits within a mapped flood overlay, and 90% is flagged bushfire-prone. There are 6 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 873 m² across 61 parcels.
Who lives in Wondabyne
Census 2021 figures published by the ABS for the Wondabyne 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 1023, and decile 7 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Calga - Kulnura, the wider ABS statistical area containing Wondabyne. There is no annual population series published at suburb level, so this describes the surrounding area rather than Wondabyne itself.
4,793 in 2001 to 4,678 in 2025, down 2%.
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.
Wondabyne 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 Wondabyne 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 95% of Wondabyne. 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 Wondabyne. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Wondabyne lot.
See what's in the $9 report →Wondabyne planning - frequently asked
Is Wondabyne flood-prone?
About 16% of Wondabyne falls within a mapped flood overlay, against the council-wide suburb average of 30%. Published flood models are held over parts of Wondabyne; the free check on the Flood Model Report page says whether one reaches a given address.
Is Wondabyne bushfire-prone?
Around 90% of Wondabyne is mapped as bushfire-prone, compared with a Central Coast average of 69%.
Is Wondabyne under a flight path?
Aircraft were observed below 3,000 ft over about 95% of Wondabyne, and over about 97% 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 500 ft, with an average of 4,000 ft. At the busiest point in the suburb about 41 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 Wondabyne?
The dominant planning zone in Wondabyne is National Parks and Nature Reserves, though the suburb also includes Recreational Waterways and Environmental Conservation.
Does Wondabyne have heritage-listed places?
Wondabyne has 6 heritage-listed places on record.
What is the typical lot size in Wondabyne?
Across 61 surveyed parcels in Wondabyne, the median lot size is about 873 m². There are also 1 registered easements mapped in the suburb.
Does Wondabyne have a train station?
Yes - Wondabyne has 1 train station: Wondabyne Station. It is also served by 3 bus stops.
Is Wondabyne an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Wondabyne scores 1023 and sits in decile 8 of 10 nationally and decile 7 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Cogra Bay | 2.3 km | 9% | 100% |
| Mooney Mooney | 3.0 km | 80% | 31% |
| Dangar Island Hornsby |
3.9 km | 6% | 56% |
| Cheero Point | 4.1 km | 6% | 94% |
| Woy Woy | 4.2 km | 34% | 62% |
| Mooney Mooney Creek | 4.4 km | 20% | 93% |
| Little Wobby | 4.8 km | 58% | 52% |
| Milsons Passage Hornsby |
5.2 km | 77% | 44% |
| Bar Point | 5.7 km | 33% | 74% |
| Patonga | 5.8 km | 15% | 62% |