Dunwich flood map & planning overlays
A planning-constraint profile of Dunwich (Redland City, QLD) - 2.27 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
2.27 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Dunwich'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.
Dunwich 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 524 Dunwich properties.
Lot-level readout
Flood-risk rating across all 524 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Dunwich.
Dunwich at a glance
How Dunwich is zoned
Selling in Dunwich? 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 2.27 km², Dunwich is highly constrained by planning overlays. About 10% of the suburb sits within a mapped flood overlay, and 41% is flagged bushfire-prone. There are 18 heritage-listed sites on record, and the dominant land-use zone is Community Facilities. The terrain is gently undulating, and the median lot measures about 648 m² across 526 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 Dunwich
Census 2021 figures published by the ABS for the Dunwich 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 924, and decile 3 within Queensland. The national average is 1000.
Age profile
Share of Dunwich's 737 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of North Stradbroke Island, the wider ABS statistical area containing Dunwich. There is no annual population series published at suburb level, so this describes the surrounding area rather than Dunwich itself.
2,171 in 2001 to 2,276 in 2025, up 5%.
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 Dunwich 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 →Dunwich planning - frequently asked
Where can I see a flood map of Dunwich?
The schematic on this page is a Dunwich 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 Dunwich address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Dunwich flood-prone?
About 10% of Dunwich falls within a mapped flood overlay, against a Redland City average of 22%. Looking lot by lot, 13% of the 524 properties we analysed in Dunwich carry some level of mapped flood risk, including 14 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 Dunwich bushfire-prone?
Yes - around 41% of Dunwich is mapped as bushfire-prone, compared with a Redland City average of 41%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Dunwich?
The dominant planning zone in Dunwich is Community Facilities, though the suburb also includes Low Density Residential and Conservation. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Dunwich have heritage-listed places?
Dunwich has 18 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 Dunwich hilly or flat?
Dunwich is gently undulating: the median lot slope is about 5%, and 13% of properties sit on slopes of 15% or steeper. Ground level runs from roughly -2 m to 101 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 Dunwich?
Across 526 surveyed parcels in Dunwich, the median lot size is about 648 m². There are also 10 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.
What is the population of Dunwich?
At the 2021 Census Dunwich had 737 usual residents, with a median age of 47 and an average household size of 2.3 people. The wider North Stradbroke Island statistical area, which contains Dunwich, went from 2,171 people in 2001 to 2,276 in 2025, up 5%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Dunwich alone.
Is Dunwich an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Dunwich scores 924 and sits in decile 2 of 10 nationally and decile 3 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 Dunwich?
Median household income in Dunwich was $1,111 a week at the 2021 Census, against $1,488 for the typical suburb in Redland City. Median rent was $294 a week and the median mortgage repayment $1,539 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Dunwich property?
A Dunwich 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.