Ku-Ring-Gai Chase flood map & planning overlays
A planning-constraint profile of Ku-Ring-Gai Chase
(Northern Beaches, NSW) - 91.22 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
91.22 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Ku-Ring-Gai Chase'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 Ku-Ring-Gai Chase
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 1,000 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.
Ku-Ring-Gai Chase at a glance
How Ku-Ring-Gai Chase is zoned
Buying in Ku-Ring-Gai Chase? 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 91.22 km², Ku-Ring-Gai Chase is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 99% is flagged bushfire-prone. There are 18 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 13,131 m² across 44 parcels.
Who lives in Ku-Ring-Gai Chase
Census 2021 figures published by the ABS for the Ku-Ring-Gai Chase suburb boundary itself, not a wider region.
Population trend, 2001 to 2025
Estimated resident population of Bayview - Elanora Heights, the wider ABS statistical area containing Ku-Ring-Gai Chase. There is no annual population series published at suburb level, so this describes the surrounding area rather than Ku-Ring-Gai Chase itself.
10,768 in 2001 to 11,426 in 2025, up 6%.
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.
Ku-Ring-Gai Chase 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 Ku-Ring-Gai Chase 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 79% of Ku-Ring-Gai Chase. 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 Ku-Ring-Gai Chase. 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 Ku-Ring-Gai Chase lot.
See what's in the $9 report →Ku-Ring-Gai Chase planning - frequently asked
Is Ku-Ring-Gai Chase flood-prone?
Flood mapping covers Ku-Ring-Gai Chase and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 12%). Published flood models are held over parts of Ku-Ring-Gai Chase; the free check on the Flood Model Report page says whether one reaches a given address.
Is Ku-Ring-Gai Chase bushfire-prone?
Around 99% of Ku-Ring-Gai Chase is mapped as bushfire-prone, compared with a Northern Beaches average of 47%.
Is Ku-Ring-Gai Chase under a flight path?
Aircraft were observed below 3,000 ft over about 79% of Ku-Ring-Gai Chase, and over about 88% 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 3,500 ft. At the busiest point in the suburb about 24 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 Ku-Ring-Gai Chase?
The dominant planning zone in Ku-Ring-Gai Chase is National Parks and Nature Reserves, though the suburb also includes Infrastructure and Environmental Conservation.
Does Ku-Ring-Gai Chase have heritage-listed places?
Ku-Ring-Gai Chase has 18 heritage-listed places on record.
What is the typical lot size in Ku-Ring-Gai Chase?
Across 44 surveyed parcels in Ku-Ring-Gai Chase, the median lot size is about 13,131 m². There are also 2 registered easements mapped in the suburb.
Does Ku-Ring-Gai Chase have a train station?
There is no train station inside Ku-Ring-Gai Chase itself. The suburb is served by 1 bus stop.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Cottage Point | 3.0 km | 0% | 99% |
| Duffys Forest | 4.7 km | Not mapped | 73% |
| Elvina Bay | 4.8 km | <1% | 100% |
| Mccarrs Creek | 4.9 km | 0% | 100% |
| Lovett Bay | 5.3 km | 0% | 100% |
| Morning Bay | 5.6 km | Not mapped | 100% |
| Terrey Hills | 5.7 km | 0% | 69% |
| Church Point | 6.0 km | 3% | 54% |
| Scotland Island | 6.2 km | <1% | 100% |
| Ingleside | 6.3 km | 7% | 96% |