Hassall Grove flood map & planning overlays
A planning-constraint profile of Hassall Grove
(Blacktown, NSW) - 1.21 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
1.21 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Hassall Grove'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 Hassall Grove
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 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.
Hassall Grove at a glance
How Hassall Grove is zoned
Buying in Hassall Grove? 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 1.21 km², Hassall Grove is moderately constrained by planning overlays. About 12% of the suburb sits within a mapped flood overlay, and 10% is flagged bushfire-prone. There are 2 heritage-listed sites on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 556 m² across 1,289 parcels.
Who lives in Hassall Grove
Census 2021 figures published by the ABS for the Hassall Grove 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 958, and decile 3 within New South Wales. The national average is 1000.
Age profile
Share of Hassall Grove's 4,401 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Hassall Grove - Plumpton, the wider ABS statistical area containing Hassall Grove. There is no annual population series published at suburb level, so this describes the surrounding area rather than Hassall Grove itself.
18,107 in 2001 to 21,657 in 2025, up 20%.
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.
Hassall Grove 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 Hassall Grove 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 48% of Hassall Grove. 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 Hassall Grove. 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 Hassall Grove lot.
See what's in the $9 report →Hassall Grove planning - frequently asked
Is Hassall Grove flood-prone?
About 12% of Hassall Grove falls within a mapped flood overlay, against the council-wide suburb average of 16%. Published flood models are held over parts of Hassall Grove; the free check on the Flood Model Report page says whether one reaches a given address.
Is Hassall Grove bushfire-prone?
Around 10% of Hassall Grove is mapped as bushfire-prone, compared with a Blacktown average of 21%.
Is Hassall Grove under a flight path?
Aircraft were observed below 3,000 ft over about 48% of Hassall Grove, and over about 99% 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 3,000 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 Hassall Grove?
The dominant planning zone in Hassall Grove is Low Density Residential, though the suburb also includes Public Recreation and Infrastructure.
Does Hassall Grove have heritage-listed places?
Hassall Grove has 2 heritage-listed places on record.
What is the typical lot size in Hassall Grove?
Across 1,289 surveyed parcels in Hassall Grove, the median lot size is about 556 m².
Does Hassall Grove have a train station?
There is no train station inside Hassall Grove itself. The suburb is served by 43 bus stops.
What is the population of Hassall Grove?
At the 2021 Census Hassall Grove had 4,401 usual residents, with a median age of 32 and an average household size of 3.3 people. The wider Hassall Grove - Plumpton statistical area, which contains Hassall Grove, went from 18,107 people in 2001 to 21,657 in 2025, up 20%.
Is Hassall Grove an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Hassall Grove scores 958 and sits in decile 4 of 10 nationally and decile 3 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Hassall Grove?
Median household income in Hassall Grove was $2,018 a week at the 2021 Census, against $2,117 for the typical suburb in Blacktown. Median rent was $410 a week and the median mortgage repayment $2,000 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Oakhurst | 0.7 km | 12% | 2% |
| Bidwill | 1.6 km | 6% | 6% |
| Colebee | 1.8 km | 26% | 53% |
| Dean Park | 2.0 km | 26% | 29% |
| Hebersham | 2.1 km | 3% | 0% |
| Plumpton | 2.3 km | 11% | 10% |
| Blackett | 2.3 km | 6% | 0% |
| Glendenning | 2.3 km | 22% | 18% |
| Dharruk | 2.9 km | 9% | 0% |
| Shalvey | 3.0 km | 9% | 8% |