Bilgola Beach flood map & planning overlays
A planning-constraint profile of Bilgola Beach
(Northern Beaches, NSW) - 0.43 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
0.43 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Bilgola Beach'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 Beach
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 2 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 Beach at a glance
How Bilgola Beach is zoned
Buying in Bilgola Beach? 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 0.43 km², Bilgola Beach is highly constrained by planning overlays. About 9% of the suburb sits within a mapped flood overlay, and 65% is flagged bushfire-prone. There are 28 heritage-listed sites on record, and the dominant land-use zone is Environmental Conservation. The median lot measures about 699 m² across 176 parcels.
Who lives in Bilgola Beach
Census 2021 figures published by the ABS for the Bilgola Beach 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 1169, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of Bilgola Beach's 251 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Newport - Bilgola, the wider ABS statistical area containing Bilgola Beach. There is no annual population series published at suburb level, so this describes the surrounding area rather than Bilgola Beach 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 Beach 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 Beach 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 100% of Bilgola Beach. 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 Beach lot.
See what's in the $9 report →Bilgola Beach planning - frequently asked
Is Bilgola Beach flood-prone?
About 9% of Bilgola Beach falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Bilgola Beach bushfire-prone?
Around 65% of Bilgola Beach is mapped as bushfire-prone, compared with a Northern Beaches average of 47%.
Is Bilgola Beach under a flight path?
Aircraft were observed below 3,000 ft over about 100% of Bilgola Beach, 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 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 Beach?
The dominant planning zone in Bilgola Beach is Environmental Conservation, though the suburb also includes Environmental Living and Infrastructure.
Does Bilgola Beach have heritage-listed places?
Bilgola Beach has 28 heritage-listed places on record.
What is the typical lot size in Bilgola Beach?
Across 176 surveyed parcels in Bilgola Beach, the median lot size is about 699 m².
Does Bilgola Beach have a train station?
There is no train station inside Bilgola Beach itself. The suburb is served by 3 bus stops.
What is the population of Bilgola Beach?
At the 2021 Census Bilgola Beach had 251 usual residents, with a median age of 54 and an average household size of 2.5 people. The wider Newport - Bilgola statistical area, which contains Bilgola Beach, went from 12,881 people in 2001 to 13,928 in 2025, up 8%.
Is Bilgola Beach an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Bilgola Beach scores 1169 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 Beach?
Median household income in Bilgola Beach was $4,299 a week at the 2021 Census, against $2,778 for the typical suburb in Northern Beaches. Median rent was $1,075 a week and the median mortgage repayment $3,467 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bilgola Plateau | 1.2 km | 2% | 21% |
| Newport | 1.5 km | 11% | 12% |
| Avalon Beach | 1.8 km | 12% | 23% |
| Clareville | 1.8 km | 4% | 5% |
| Scotland Island | 3.2 km | <1% | 100% |
| Pittwater | 3.4 km | <1% | 12% |
| Whale Beach | 3.6 km | 3% | 21% |
| Church Point | 3.6 km | 3% | 54% |
| Bayview | 3.7 km | 13% | 44% |
| Mona Vale | 4.1 km | 15% | 4% |