Singletons Mill flood map & planning overlays
A planning-constraint profile of Singletons Mill
(Hornsby, NSW) - 6.11 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
6.11 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Singletons Mill'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 Singletons Mill
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 26 Sep 2026
typical observed square 6 a day
Night movements: observed, lowest 4,500 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.
Singletons Mill at a glance
How Singletons Mill is zoned
Buying in Singletons Mill? 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 6.11 km², Singletons Mill is highly constrained by planning overlays. About 32% of the suburb sits within a mapped flood overlay, and 89% is flagged bushfire-prone. There are 9 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 169,852 m² across 17 parcels.
Who lives in Singletons Mill
Census 2021 figures published by the ABS for the Singletons Mill suburb boundary itself, not a wider region.
Population trend, 2001 to 2025
Estimated resident population of Galston - Laughtondale, the wider ABS statistical area containing Singletons Mill. There is no annual population series published at suburb level, so this describes the surrounding area rather than Singletons Mill itself.
5,182 in 2001 to 5,472 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.
Singletons Mill 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 26 September 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 Singletons Mill 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 27% of Singletons Mill. 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 Singletons Mill. 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 Singletons Mill lot.
See what's in the $9 report →Singletons Mill planning - frequently asked
Is Singletons Mill flood-prone?
About 32% of Singletons Mill falls within a mapped flood overlay, against the council-wide suburb average of 10%. Published flood models are held over parts of Singletons Mill; the free check on the Flood Model Report page says whether one reaches a given address.
Is Singletons Mill bushfire-prone?
Around 89% of Singletons Mill is mapped as bushfire-prone, compared with a Hornsby average of 70%.
Is Singletons Mill under a flight path?
Aircraft were observed below 3,000 ft over about 27% of Singletons Mill, and over about 100% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 26 Sep 2026). The lowest measured aircraft was at 1,000 ft, with an average of 7,500 ft. At the busiest point in the suburb about 40 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 Singletons Mill?
The dominant planning zone in Singletons Mill is National Parks and Nature Reserves, though the suburb also includes Environmental Management and Natural Waterways.
Does Singletons Mill have heritage-listed places?
Singletons Mill has 9 heritage-listed places on record.
What is the typical lot size in Singletons Mill?
Across 17 surveyed parcels in Singletons Mill, the median lot size is about 169,852 m².
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Canoelands | 4.0 km | 12% | 93% |
| Spencer Central Coast |
5.2 km | 19% | 87% |
| Laughtondale | 5.5 km | 19% | 91% |
| Wendoree Park Central Coast |
7.6 km | 28% | 80% |
| Gunderman Central Coast |
7.9 km | 9% | 96% |
| Marlow Central Coast |
8.1 km | 46% | 83% |
| Lower Mangrove Central Coast |
8.7 km | 16% | 93% |
| Bar Point Central Coast |
9.6 km | 33% | 74% |
| Maroota The Hills Shire |
10.2 km | <1% | 93% |
| Forest Glen | 10.3 km | 0% | 97% |