Lagoon Grass flood map & planning overlays
A planning-constraint profile of Lagoon Grass
(Lismore, NSW) - 5.38 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
5.38 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lagoon Grass's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Lagoon Grass
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 to
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Lagoon Grass at a glance
How Lagoon Grass is zoned
Buying in Lagoon Grass? 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 5.38 km², Lagoon Grass is highly constrained by planning overlays. About 66% of the suburb sits within a mapped flood overlay, and 5% is flagged bushfire-prone. The dominant land-use zone is Primary Production. The median lot measures about 162,298 m² across 33 parcels.
Who lives in Lagoon Grass
Census 2021 figures published by the ABS for the Lagoon Grass 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 1028, and decile 7 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Lismore, the wider ABS statistical area containing Lagoon Grass. There is no annual population series published at suburb level, so this describes the surrounding area rather than Lagoon Grass itself.
16,516 in 2001 to 13,679 in 2025, down 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.
Lagoon Grass 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 Lagoon Grass 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Lagoon Grass lot.
See what's in the $9 report →Lagoon Grass planning - frequently asked
Is Lagoon Grass flood-prone?
About 66% of Lagoon Grass falls within a mapped flood overlay, against the council-wide suburb average of 46%.
Is Lagoon Grass bushfire-prone?
Around 5% of Lagoon Grass is mapped as bushfire-prone, compared with a Lismore average of 33%.
Is Lagoon Grass under a flight path?
No aircraft were observed over Lagoon Grass in the period sampled (recent weeks to now). Sampling is intermittent, so that is a floor rather than proof that none fly over. 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 Lagoon Grass?
The dominant planning zone in Lagoon Grass is Primary Production, though the suburb also includes Natural Waterways and General Residential.
Does Lagoon Grass have heritage-listed places?
No heritage-listed places are on record within Lagoon Grass.
What is the typical lot size in Lagoon Grass?
Across 33 surveyed parcels in Lagoon Grass, the median lot size is about 162,298 m².
Is Lagoon Grass an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Lagoon Grass scores 1028 and sits in decile 8 of 10 nationally and decile 7 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 |
|---|---|---|---|
| Howards Grass | 1.9 km | 84% | 10% |
| Lismore Heights | 2.3 km | 8% | 22% |
| Richmond Hill | 2.3 km | 30% | 28% |
| Woodlawn | 3.2 km | 43% | 16% |
| Lismore | 3.7 km | 53% | 22% |
| Goonellabah | 3.9 km | <1% | 34% |
| North Lismore | 4.3 km | 45% | 17% |
| East Lismore | 4.7 km | 21% | 33% |
| Girards Hill | 4.9 km | 27% | 22% |
| Chilcotts Grass | 4.9 km | Not mapped | 79% |