The Gap flood map & planning overlays
A planning-constraint profile of The Gap (Brisbane City, QLD) - 12.6 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
12.6 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to The Gap'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.
The Gap 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 7,194 The Gap properties.
Lot-level readout
Flood-risk rating across all 7,194 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in The Gap.
The Gap at a glance
How The Gap is zoned
Selling in The Gap? 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 12.6 km², The Gap is highly constrained by planning overlays. About 20% of the suburb sits within a mapped flood overlay, and 60% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is Low density residential. The terrain is hilly, and the median lot measures about 641 m² across 6,950 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 The Gap
Census 2021 figures published by the ABS for the The Gap 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 1109, and decile 10 within Queensland. The national average is 1000.
Age profile
Share of The Gap's 17,318 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of The Gap, the wider ABS statistical area containing The Gap. There is no annual population series published at suburb level, so this describes the surrounding area rather than The Gap itself.
15,677 in 2001 to 18,230 in 2025, up 16%.
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 The Gap 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 →The Gap planning - frequently asked
Where can I see a flood map of The Gap?
The schematic on this page is a The Gap flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 20% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any The Gap address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is The Gap flood-prone?
About 20% of The Gap falls within a mapped flood overlay, against a Brisbane City average of 40%. Looking lot by lot, 10% of the 7,194 properties we analysed in The Gap carry some level of mapped flood risk, including 262 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 The Gap bushfire-prone?
Yes - around 60% of The Gap 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 The Gap?
The dominant planning zone in The Gap is Low density residential, though the suburb also includes Environmental management and Conservation (Metropolitan). Zoning sets what you can build and do on a site, and can differ lot by lot.
Does The Gap have heritage-listed places?
The Gap has 5 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.
Is The Gap hilly or flat?
The Gap is hilly: the median lot slope is about 11%, and 27% of properties sit on slopes of 15% or steeper. Ground level runs from roughly 37 m to 103 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 The Gap?
Across 6,950 surveyed parcels in The Gap, the median lot size is about 641 m². There are also 992 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 The Gap have a train station?
There is no train station inside The Gap itself. The suburb is served by 77 bus stops.
What is the population of The Gap?
At the 2021 Census The Gap had 17,318 usual residents, with a median age of 42 and an average household size of 2.9 people. The wider The Gap statistical area, which contains The Gap, went from 15,677 people in 2001 to 18,230 in 2025, up 16%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than The Gap alone.
Is The Gap an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), The Gap scores 1109 and sits in decile 10 of 10 nationally and decile 10 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 The Gap?
Median household income in The Gap was $2,573 a week at the 2021 Census, against $2,122 for the typical suburb in Brisbane City. Median rent was $490 a week and the median mortgage repayment $2,253 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a The Gap property?
A The Gap 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.