Bilgola Plateau flood map & planning overlays
A planning-constraint profile of Bilgola Plateau
(Northern Beaches, NSW) - 1.3 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
1.3 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Bilgola Plateau'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 Bilgola Plateau
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: 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.
Bilgola Plateau at a glance
How Bilgola Plateau is zoned
Buying in Bilgola Plateau? 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 1.3 km², Bilgola Plateau is moderately constrained by planning overlays. About 2% of the suburb sits within a mapped flood overlay, and 21% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Environmental Living. The median lot measures about 706 m² across 1,270 parcels.
Who lives in Bilgola Plateau
Census 2021 figures published by the ABS for the Bilgola Plateau 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 1148, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of Bilgola Plateau's 3,650 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Newport - Bilgola, the wider ABS statistical area containing Bilgola Plateau. There is no annual population series published at suburb level, so this describes the surrounding area rather than Bilgola Plateau itself.
12,881 in 2001 to 13,928 in 2025, up 8%.
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.
Bilgola Plateau 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 Bilgola Plateau 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 76% of Bilgola Plateau. 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 Bilgola Plateau lot.
See what's in the $9 report →Bilgola Plateau planning - frequently asked
Is Bilgola Plateau flood-prone?
About 2% of Bilgola Plateau falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Bilgola Plateau bushfire-prone?
Around 21% of Bilgola Plateau is mapped as bushfire-prone, compared with a Northern Beaches average of 47%.
Is Bilgola Plateau under a flight path?
Aircraft were observed below 3,000 ft over about 76% of Bilgola Plateau, and over about 100% 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 4,500 ft. At the busiest point in the suburb about 2 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 Bilgola Plateau?
The dominant planning zone in Bilgola Plateau is Environmental Living, though the suburb also includes Low Density Residential and Public Recreation.
Does Bilgola Plateau have heritage-listed places?
Bilgola Plateau has 3 heritage-listed places on record.
What is the typical lot size in Bilgola Plateau?
Across 1,270 surveyed parcels in Bilgola Plateau, the median lot size is about 706 m².
Does Bilgola Plateau have a train station?
There is no train station inside Bilgola Plateau itself. The suburb is served by 36 bus stops.
What is the population of Bilgola Plateau?
At the 2021 Census Bilgola Plateau had 3,650 usual residents, with a median age of 46 and an average household size of 2.9 people. The wider Newport - Bilgola statistical area, which contains Bilgola Plateau, went from 12,881 people in 2001 to 13,928 in 2025, up 8%.
Is Bilgola Plateau an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Bilgola Plateau scores 1148 and sits in decile 10 of 10 nationally and decile 10 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Bilgola Plateau?
Median household income in Bilgola Plateau was $2,856 a week at the 2021 Census, against $2,778 for the typical suburb in Northern Beaches. Median rent was $895 a week and the median mortgage repayment $3,315 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Clareville | 1.1 km | 4% | 5% |
| Bilgola Beach | 1.2 km | 9% | 65% |
| Newport | 1.3 km | 11% | 12% |
| Scotland Island | 2.0 km | <1% | 100% |
| Avalon Beach | 2.3 km | 12% | 23% |
| Church Point | 2.5 km | 3% | 54% |
| Pittwater | 2.7 km | <1% | 12% |
| Bayview | 2.7 km | 13% | 44% |
| Mccarrs Creek | 3.3 km | 0% | 100% |
| Lovett Bay | 3.4 km | 0% | 100% |