Lilyvale flood map & planning overlays
A planning-constraint profile of Lilyvale
(Wollongong, NSW) - 22.1 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
22.1 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lilyvale'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 Lilyvale
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 1 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.
Lilyvale at a glance
How Lilyvale is zoned
Buying in Lilyvale? 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 22.1 km², Lilyvale is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 1,630 m² across 74 parcels.
Who lives in Lilyvale
Census 2021 figures published by the ABS for the Lilyvale 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 1061, and decile 9 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Helensburgh, the wider ABS statistical area containing Lilyvale. There is no annual population series published at suburb level, so this describes the surrounding area rather than Lilyvale itself.
8,118 in 2001 to 9,174 in 2025, up 13%.
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.
Lilyvale 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 Lilyvale 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 65% of Lilyvale. 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 Lilyvale lot.
See what's in the $9 report →Lilyvale planning - frequently asked
Is Lilyvale flood-prone?
Flood mapping covers Lilyvale and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 12%).
Is Lilyvale bushfire-prone?
Around 100% of Lilyvale is mapped as bushfire-prone, compared with a Wollongong average of 56%.
Is Lilyvale under a flight path?
Aircraft were observed below 3,000 ft over about 65% of Lilyvale, and over about 90% 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 500 ft, with an average of 4,000 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 Lilyvale?
The dominant planning zone in Lilyvale is National Parks and Nature Reserves, though the suburb also includes Environmental Conservation and Infrastructure.
Does Lilyvale have heritage-listed places?
Lilyvale has 5 heritage-listed places on record.
What is the typical lot size in Lilyvale?
Across 74 surveyed parcels in Lilyvale, the median lot size is about 1,630 m².
Is Lilyvale an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Lilyvale scores 1061 and sits in decile 9 of 10 nationally and decile 9 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Helensburgh | 3.9 km | 0% | 92% |
| Garie Sutherland Shire |
4.4 km | 0% | 100% |
| Otford | 4.6 km | 0% | 99% |
| Palona Sutherland Shire |
5.7 km | 0% | 100% |
| Uloola Sutherland Shire |
5.9 km | 0% | 100% |
| Waterfall Sutherland Shire |
6.5 km | 0% | 98% |
| Stanwell Tops | 7.2 km | 0% | 100% |
| Stanwell Park | 7.9 km | 0% | 87% |
| Woronora Dam | 8.1 km | 0% | 99% |
| Wattamolla Sutherland Shire |
8.1 km | Not mapped | 100% |