Holgate flood map & planning overlays
A planning-constraint profile of Holgate
(Central Coast, NSW) - 9.04 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
9.04 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Holgate'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 Holgate
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.
Holgate at a glance
How Holgate is zoned
Buying in Holgate? 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 9.04 km², Holgate is highly constrained by planning overlays. About 8% of the suburb sits within a mapped flood overlay, and 97% is flagged bushfire-prone. The dominant land-use zone is Environmental Conservation. The median lot measures about 10,847 m² across 349 parcels.
Who lives in Holgate
Census 2021 figures published by the ABS for the Holgate 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 1119, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of Holgate's 1,023 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Erina - Green Point, the wider ABS statistical area containing Holgate. There is no annual population series published at suburb level, so this describes the surrounding area rather than Holgate itself.
13,184 in 2001 to 14,644 in 2025, up 11%.
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.
Holgate 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 Holgate 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 58% of Holgate. 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 Holgate lot.
See what's in the $9 report →Holgate planning - frequently asked
Is Holgate flood-prone?
About 8% of Holgate falls within a mapped flood overlay, against the council-wide suburb average of 30%.
Is Holgate bushfire-prone?
Around 97% of Holgate is mapped as bushfire-prone, compared with a Central Coast average of 69%.
Is Holgate under a flight path?
Aircraft were observed below 3,000 ft over about 58% of Holgate, and over about 84% 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 Holgate?
The dominant planning zone in Holgate is Environmental Conservation, though the suburb also includes Environmental Living and Environmental Management.
Does Holgate have heritage-listed places?
No heritage-listed places are on record within Holgate.
What is the typical lot size in Holgate?
Across 349 surveyed parcels in Holgate, the median lot size is about 10,847 m². There are also 16 registered easements mapped in the suburb.
Does Holgate have a train station?
There is no train station inside Holgate itself. The suburb is served by 25 bus stops.
What is the population of Holgate?
At the 2021 Census Holgate had 1,023 usual residents, with a median age of 43 and an average household size of 3.3 people. The wider Erina - Green Point statistical area, which contains Holgate, went from 13,184 people in 2001 to 14,644 in 2025, up 11%.
Is Holgate an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Holgate scores 1119 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 Holgate?
Median household income in Holgate was $2,951 a week at the 2021 Census, against $1,735 for the typical suburb in Central Coast. Median rent was $335 a week and the median mortgage repayment $3,000 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Mount Elliot | 1.8 km | <1% | 100% |
| Matcham | 2.3 km | 7% | 91% |
| Erina Heights | 2.6 km | 9% | 59% |
| Lisarow | 3.0 km | 13% | 89% |
| Tumbi Umbi | 3.5 km | 24% | 88% |
| Springfield | 3.6 km | 25% | 88% |
| Wyoming | 3.7 km | 11% | 68% |
| Erina | 4.1 km | 24% | 56% |
| Wamberal | 4.3 km | 31% | 63% |
| North Gosford | 4.9 km | 12% | 57% |