North Turramurra flood map & planning overlays

A planning-constraint profile of North Turramurra (Ku-Ring-Gai, NSW) - 11.67 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.

Planning schematicNorth Turramurra

Constraint readout

11.67 km² - this suburb is highly constrained by planning overlays.

Flood overlay <1%

below council avg (3%) · #14 of 16 mapped council suburbs

Modelled flood depth held over parts of North Turramurra

Bushfire-prone 86%

1.9× council avg (46%) · #2 of 17 mapped council suburbs

Environmental76%

2.5× council avg (31%) · #1 of 17 in council

Heritage sites 7 Aircraft seen below 3,000 ft 96% Mostly National Parks and Nature Reserves Bushfire 2nd most affected of 17 →

Elevation hillshade with street names, clipped to North Turramurra'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 North Turramurra

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

Under observed aircraft

100%

of the suburb, at or below 10,000 ft

Below 3,000 ft

96%

of the suburb's area

Lowest measured

500 ft

averaging 4,500 ft

Busiest square

~46 a day

8 a day below 3,000 ft · ±15%
typical observed square 2 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.

North Turramurra at a glance

Parcels 1,477 Median lot 940 m² Mapped easements 8 Bus stops 68

How North Turramurra is zoned

National Parks and Nature Reserves 68%

Environmental Living 14%

Environmental Conservation 8%

Public Recreation 4%

Large Lot Residential 2%

Infrastructure 2%

Buying in North Turramurra? 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 11.67 km², North Turramurra is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 86% is flagged bushfire-prone. There are 7 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 940 m² across 1,477 parcels.

Who lives in North Turramurra

Census 2021 figures published by the ABS for the North Turramurra suburb boundary itself, not a wider region.

Population

4,194

usual residents, 2021

Median age

years

Median household income

$2,064

per week, Ku-Ring-Gai suburb typical $3,189

Median rent

$760

per week, Ku-Ring-Gai suburb typical $688

Median mortgage

$3,629

per month

Household size

2.4

people, average

Socio-economic standing

ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.

Advantage and disadvantage (IRSAD) Decile 10

most disadvantagedleast disadvantaged

Score 1147, and decile 10 within New South Wales. The national average is 1000.

Relative disadvantage (IRSD) Decile 10

most disadvantagedleast disadvantaged

Age profile

Share of North Turramurra's 4,194 residents in each ABS age band.

0-4 3.3%

5-14 10.8%

15-19 5.9%

20-24 4.1%

25-34 3.8%

35-44 7.9%

45-54 12.1%

55-64 11.1%

65-74 10.2%

75-84 16.5%

85+ 14.2%

Population trend, 2001 to 2025

Estimated resident population of Turramurra, the wider ABS statistical area containing North Turramurra. There is no annual population series published at suburb level, so this describes the surrounding area rather than North Turramurra itself.

17,826 in 2001 to 20,593 in 2025, up 16%.

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.

North Turramurra 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 North Turramurra 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 96% of North Turramurra. 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 North Turramurra. 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 North Turramurra lot.

See what's in the $9 report →

North Turramurra planning - frequently asked

Is North Turramurra flood-prone?

Flood mapping covers North Turramurra and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 3%). Published flood models are held over parts of North Turramurra; the free check on the Flood Model Report page says whether one reaches a given address.

Is North Turramurra bushfire-prone?

Around 86% of North Turramurra is mapped as bushfire-prone, compared with a Ku-Ring-Gai average of 46%.

Is North Turramurra under a flight path?

Aircraft were observed below 3,000 ft over about 96% of North Turramurra, 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 500 ft, with an average of 4,500 ft. At the busiest point in the suburb about 46 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 North Turramurra?

The dominant planning zone in North Turramurra is National Parks and Nature Reserves, though the suburb also includes Environmental Living and Environmental Conservation.

Does North Turramurra have heritage-listed places?

North Turramurra has 7 heritage-listed places on record.

What is the typical lot size in North Turramurra?

Across 1,477 surveyed parcels in North Turramurra, the median lot size is about 940 m². There are also 8 registered easements mapped in the suburb.

Does North Turramurra have a train station?

There is no train station inside North Turramurra itself. The suburb is served by 68 bus stops.

What is the population of North Turramurra?

At the 2021 Census North Turramurra had 4,194 usual residents, with a median age of 56 and an average household size of 2.4 people. The wider Turramurra statistical area, which contains North Turramurra, went from 17,826 people in 2001 to 20,593 in 2025, up 16%.

Is North Turramurra an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), North Turramurra scores 1147 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 North Turramurra?

Median household income in North Turramurra was $2,064 a week at the 2021 Census, against $3,189 for the typical suburb in Ku-Ring-Gai. Median rent was $760 a week and the median mortgage repayment $3,629 a month.

Compare nearby suburbs

Nearby suburb	Distance	Flood mapped	Bushfire-prone
St Ives Chase	1.8 km	Not mapped	75%
North Wahroonga	2.0 km	2%	87%
Asquith Hornsby	3.2 km	0%	52%
St Ives	4.1 km	3%	58%
Duffys Forest Northern Beaches	4.3 km	Not mapped	73%
Mount Colah Hornsby	4.4 km	0%	86%
Waitara Hornsby	4.7 km	0%	0%
Warrawee	5.0 km	3%	2%
Wahroonga	5.0 km	<1%	30%
Hornsby Hornsby	5.2 km	0%	50%

See all Ku-Ring-Gai suburb profiles →