Mount Lewis flood map & planning overlays
A planning-constraint profile of Mount Lewis
(Canterbury-Bankstown, NSW) - 0.31 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
0.31 km² - this suburb is relatively unconstrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Lewis'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 Mount Lewis
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 2 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.
Mount Lewis at a glance
How Mount Lewis is zoned
Buying in Mount Lewis? 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 0.31 km², Mount Lewis is relatively unconstrained by planning overlays. About 11% of the suburb sits within a mapped flood overlay. The dominant land-use zone is Low Density Residential. The median lot measures about 557 m² across 390 parcels.
Who lives in Mount Lewis
Census 2021 figures published by the ABS for the Mount Lewis 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 965, and decile 4 within New South Wales. The national average is 1000.
Age profile
Share of Mount Lewis's 1,234 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Greenacre - South, the wider ABS statistical area containing Mount Lewis. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Lewis itself.
11,094 in 2001 to 13,794 in 2025, up 24%.
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.
Mount Lewis 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 Mount Lewis 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.
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 Mount Lewis. 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 Mount Lewis lot.
See what's in the $9 report →Mount Lewis planning - frequently asked
Is Mount Lewis flood-prone?
About 11% of Mount Lewis falls within a mapped flood overlay, against the council-wide suburb average of 18%. Published flood models are held over parts of Mount Lewis; the free check on the Flood Model Report page says whether one reaches a given address.
Is Mount Lewis bushfire-prone?
Bushfire mapping covers Mount Lewis and little to none of it is mapped as bushfire-prone (the Canterbury-Bankstown average is 10%).
Is Mount Lewis under a flight path?
Aircraft were observed over about 100% of Mount Lewis in the period sampled, but only above 3,000 ft - the lowest measured was 3,000 ft. 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 Mount Lewis?
The dominant planning zone in Mount Lewis is Low Density Residential, though the suburb also includes Public Recreation and Infrastructure.
Does Mount Lewis have heritage-listed places?
No heritage-listed places are on record within Mount Lewis.
What is the typical lot size in Mount Lewis?
Across 390 surveyed parcels in Mount Lewis, the median lot size is about 557 m². There are also 3 registered easements mapped in the suburb.
Does Mount Lewis have a train station?
There is no train station inside Mount Lewis itself. The suburb is served by 10 bus stops.
What is the population of Mount Lewis?
At the 2021 Census Mount Lewis had 1,234 usual residents, with a median age of 37 and an average household size of 3.3 people. The wider Greenacre - South statistical area, which contains Mount Lewis, went from 11,094 people in 2001 to 13,794 in 2025, up 24%.
Is Mount Lewis an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Lewis scores 965 and sits in decile 4 of 10 nationally and decile 4 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mount Lewis?
Median household income in Mount Lewis was $1,539 a week at the 2021 Census, against $1,706 for the typical suburb in Canterbury-Bankstown. Median rent was $400 a week and the median mortgage repayment $2,571 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bankstown | 1.3 km | 30% | 0% |
| Punchbowl | 1.5 km | 8% | 0% |
| Wiley Park | 1.8 km | 0% | 0% |
| Greenacre | 2.0 km | 12% | <1% |
| Lakemba | 2.4 km | 0% | 0% |
| Chullora | 2.6 km | 27% | 0% |
| Yagoona | 2.8 km | 14% | 0% |
| Potts Hill | 3.0 km | 14% | 0% |
| Roselands | 3.0 km | Not mapped | 0% |
| Strathfield South Strathfield |
3.5 km | Not mapped | 0% |