Forest Lake flood map & planning overlays
A planning-constraint profile of Forest Lake (Brisbane City, QLD) - 9.86 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
9.86 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Forest Lake'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.
Forest Lake flood risk at the property level
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched, from our lot-by-lot analysis of 9,476 Forest Lake properties.
Lot-level readout
Flood-risk rating across all 9,476 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Forest Lake.
Forest Lake at a glance
How Forest Lake is zoned
Selling in Forest Lake? The lot-level zone is the zoning Part 3 of Queensland's Form 2 seller disclosure statement asks for - see our Form 2 planning data guide.
Across its 9.86 km², Forest Lake is highly constrained by planning overlays. About 14% of the suburb sits within a mapped flood overlay, and 29% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Low density residential. The terrain is gently undulating, and the median lot measures about 480 m² across 8,470 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 Forest Lake
Census 2021 figures published by the ABS for the Forest Lake 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 997, and decile 7 within Queensland. The national average is 1000.
Age profile
Share of Forest Lake's 22,676 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Forest Lake - Ellen Grove, the wider ABS statistical area containing Forest Lake. There is no annual population series published at suburb level, so this describes the surrounding area rather than Forest Lake itself.
14,091 in 2001 to 24,080 in 2025, up 71%.
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.
Check a specific Forest Lake 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 →Forest Lake planning - frequently asked
Where can I see a flood map of Forest Lake?
The schematic on this page is a Forest Lake flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 14% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Forest Lake address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Forest Lake flood-prone?
About 14% of Forest Lake falls within a mapped flood overlay, against a Brisbane City average of 40%. Looking lot by lot, 1% of the 9,476 properties we analysed in Forest Lake carry some level of mapped flood risk, including 76 rated high risk or historically affected. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Forest Lake bushfire-prone?
Yes - around 29% of Forest Lake is mapped as bushfire-prone, compared with a Brisbane City average of 27%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Forest Lake?
The dominant planning zone in Forest Lake is Low density residential, though the suburb also includes Open space (Local) and Education purposes. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Forest Lake have heritage-listed places?
Forest Lake has 1 heritage-listed place on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
Is Forest Lake hilly or flat?
Forest Lake is gently undulating: the median lot slope is about 5%. Ground level runs from roughly 28 m to 77 m AHD across the suburb. Slope drives site costs - cut and fill, retaining walls and driveway grades - so it is worth knowing before you commit to a sloping block.
What is the typical lot size in Forest Lake?
Across 8,470 surveyed parcels in Forest Lake, the median lot size is about 480 m². There are also 293 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 Forest Lake have a train station?
There is no train station inside Forest Lake itself. The suburb is served by 43 bus stops.
What is the population of Forest Lake?
At the 2021 Census Forest Lake had 22,676 usual residents, with a median age of 37 and an average household size of 2.8 people. The wider Forest Lake - Ellen Grove statistical area, which contains Forest Lake, went from 14,091 people in 2001 to 24,080 in 2025, up 71%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Forest Lake alone.
Is Forest Lake an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Forest Lake scores 997 and sits in decile 6 of 10 nationally and decile 7 within Queensland - 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 Forest Lake?
Median household income in Forest Lake was $1,921 a week at the 2021 Census, against $2,122 for the typical suburb in Brisbane City. Median rent was $390 a week and the median mortgage repayment $1,690 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Forest Lake property?
A Forest Lake planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.