Lynbrook flood map & planning overlays
A planning-constraint profile of Lynbrook
(Casey, VIC) - 4.11 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 6 September 2026.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
4.11 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Lynbrook's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Nearby suburbs, nearest first
Lynbrook at a glance
How Lynbrook is zoned
Selling in Lynbrook? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses - a $9 planning report pulls them at the lot level for any Lynbrook address.
Across its 4.11 km², Lynbrook is moderately constrained by planning overlays. About 10% of the suburb sits within a mapped flood overlay, and 24% is flagged bushfire-prone. There are 2 heritage-listed sites on record, and the dominant land-use zone is General Residential Zone (GRZ1). The median lot measures about 593 m² across 3,227 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Who lives in Lynbrook
Census 2021 figures published by the ABS for the Lynbrook 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 993, and decile 5 within Victoria. The national average is 1000.
Age profile
Share of Lynbrook's 9,121 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lynbrook - Lyndhurst, the wider ABS statistical area containing Lynbrook. There is no annual population series published at suburb level, so this describes the surrounding area rather than Lynbrook itself.
1,507 in 2001 to 19,545 in 2025, up 1197%.
Source: Australian Bureau of Statistics. Census of Population and Housing 2021 (General Community Profile) and SEIFA 2021, both published at the Suburbs and Localities level; Regional Population (estimated resident population) at Statistical Area Level 2. Used under CC BY 4.0. Census counts of small populations are randomly adjusted by the ABS to protect confidentiality, so figures for small suburbs are indicative.
Lynbrook data sources and coverage
Every figure below is an aggregate for the suburb boundary. “Not mapped” means LayeredGeo does not hold a source layer covering this suburb; it is never an all-clear for a particular property.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, Defence |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 6 September 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
What a $9 report adds for a Lynbrook address
This page is the suburb; the report is your lot. For any Lynbrook address it resolves, on the lot boundary:
- The zone and every planning overlay that touches the lot, in the scheme's own labels
- Which flood overlay categories reach the lot
- Whether the lot is in bushfire-prone mapping, and what that triggers for a build
- Whether the lot, or a neighbour, is one of the 2 heritage-listed places on record
- Walking distance to the nearest station
- A coverage disclosure: exactly which layers were, and were not, assessed
The interactive map is free - check an address below.
Geotechnical desktop report for a Lynbrook lot
The planning report tells you what you may build. The geotechnical desktop report tells you what the ground under a Lynbrook address is likely to do - before you pay for a site investigation.
- Mapped geology and soil landscape on the lot
- Indicative AS 2870 site class, with the evidence behind it
- Nearby bore logs and groundwater records
- Acid sulfate soil and reactive clay screening
- Contours, slope and site elevation
- What the desktop evidence cannot tell you, stated plainly
Check a specific Lynbrook 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.
See what's in the $9 report →Lynbrook planning - frequently asked
Where can I see a flood map of Lynbrook?
The schematic on this page is a Lynbrook flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 10% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Lynbrook address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Lynbrook flood-prone?
About 10% of Lynbrook falls within a mapped flood overlay, against the council-wide suburb average of 18%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Lynbrook bushfire-prone?
Around 24% of Lynbrook is mapped as bushfire-prone, compared with a Casey average of 59%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Lynbrook?
The dominant planning zone in Lynbrook is General Residential Zone (GRZ1), though the suburb also includes General Residential Zone (GRZ2) and Commercial 2 Zone (C2Z). Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Lynbrook have heritage-listed places?
Lynbrook has 2 heritage-listed places on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
What is the typical lot size in Lynbrook?
Across 3,227 surveyed parcels in Lynbrook, the median lot size is about 593 m². There are also 1,512 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.
Does Lynbrook have a train station?
Yes - Lynbrook has 1 train station: Lynbrook Station. It is also served by 24 bus stops.
What is the population of Lynbrook?
At the 2021 Census Lynbrook had 9,121 usual residents, with a median age of 33 and an average household size of 3.5 people. The wider Lynbrook - Lyndhurst statistical area, which contains Lynbrook, went from 1,507 people in 2001 to 19,545 in 2025, up 1197%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Lynbrook alone.
Is Lynbrook an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Lynbrook scores 993 and sits in decile 6 of 10 nationally and decile 5 within Victoria - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.
What is the median household income in Lynbrook?
Median household income in Lynbrook was $2,212 a week at the 2021 Census, against $1,912 for the typical suburb in Casey. Median rent was $401 a week and the median mortgage repayment $1,962 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Lynbrook property?
A Lynbrook planning report pulls every overlay - zoning, flood, bushfire, heritage, environmental and noise - that touches a single lot, on live council and state data. The interactive map preview is free; the full PDF report is $9.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Hampton Park | 1.7 km | 22% | 49% |
| Lyndhurst Greater Dandenong |
2.7 km | 4% | 50% |
| Narre Warren South | 4.0 km | 10% | 8% |
| Dandenong South Greater Dandenong |
4.4 km | 18% | 6% |
| Cranbourne North | 4.6 km | 7% | 6% |
| Sandhurst Frankston |
4.9 km | 0% | 10% |
| Narre Warren | 5.4 km | 18% | 16% |
| Cranbourne West | 5.5 km | 2% | 29% |
| Hallam | 5.7 km | 11% | 22% |
| Eumemmerring | 6.3 km | 5% | 2% |