Sans Souci flood map & planning overlays
A planning-constraint profile of Sans Souci
(Georges River, NSW) - 4.56 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
4.56 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Sans Souci'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 Sans Souci
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 1,500 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.
Sans Souci at a glance
How Sans Souci is zoned
Buying in Sans Souci? 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 4.56 km², Sans Souci is moderately constrained by planning overlays. About 16% of the suburb sits within a mapped flood overlay. There are 32 heritage-listed sites on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 562 m² across 3,037 parcels.
Who lives in Sans Souci
Census 2021 figures published by the ABS for the Sans Souci 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 1052, and decile 8 within New South Wales. The national average is 1000.
Age profile
Share of Sans Souci's 10,864 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Sans Souci - Ramsgate, the wider ABS statistical area containing Sans Souci. There is no annual population series published at suburb level, so this describes the surrounding area rather than Sans Souci itself.
14,651 in 2001 to 17,080 in 2025, up 17%.
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.
Sans Souci 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 Sans Souci 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 93% of Sans Souci. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Sans Souci lot.
See what's in the $9 report →Sans Souci planning - frequently asked
Is Sans Souci flood-prone?
About 16% of Sans Souci falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Sans Souci bushfire-prone?
Bushfire mapping covers Sans Souci and little to none of it is mapped as bushfire-prone (the Georges River average is 7%).
Is Sans Souci under a flight path?
Aircraft were observed below 3,000 ft over about 93% of Sans Souci, 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 3,500 ft. At the busiest point in the suburb about 11 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 Sans Souci?
The dominant planning zone in Sans Souci is Low Density Residential, though the suburb also includes Recreational Waterways and Medium Density Residential.
Does Sans Souci have heritage-listed places?
Sans Souci has 32 heritage-listed places on record.
What is the typical lot size in Sans Souci?
Across 3,037 surveyed parcels in Sans Souci, the median lot size is about 562 m². There are also 10 registered easements mapped in the suburb.
Does Sans Souci have a train station?
There is no train station inside Sans Souci itself. The suburb is served by 94 bus stops.
What is the population of Sans Souci?
At the 2021 Census Sans Souci had 10,864 usual residents, with a median age of 44 and an average household size of 2.5 people. The wider Sans Souci - Ramsgate statistical area, which contains Sans Souci, went from 14,651 people in 2001 to 17,080 in 2025, up 17%.
Is Sans Souci an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Sans Souci scores 1052 and sits in decile 9 of 10 nationally and decile 8 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Sans Souci?
Median household income in Sans Souci was $1,863 a week at the 2021 Census, against $2,050 for the typical suburb in Georges River. Median rent was $500 a week and the median mortgage repayment $2,700 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Sandringham Bayside |
1.0 km | 26% | 0% |
| Carss Park | 1.3 km | 6% | 0% |
| Kogarah Bay | 1.4 km | 10% | 0% |
| Dolls Point Bayside |
1.5 km | 37% | 0% |
| Blakehurst | 1.9 km | 2% | 5% |
| Ramsgate Bayside |
1.9 km | 16% | 0% |
| Beverley Park | 2.1 km | 41% | 0% |
| Taren Point Sutherland Shire |
2.2 km | 75% | 0% |
| Ramsgate Beach Bayside |
2.2 km | 0% | 0% |
| Kyle Bay | 2.7 km | 0% | 1% |