Diamond Valley flood map & planning overlays
A planning-constraint profile of Diamond Valley (Sunshine Coast Regional, QLD) - 9.82 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
9.82 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Diamond Valley'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.
Diamond Valley 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 206 Diamond Valley properties.
Lot-level readout
Flood-risk rating across all 206 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Diamond Valley.
Diamond Valley at a glance
How Diamond Valley is zoned
Selling in Diamond Valley? 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 9.82 km², Diamond Valley is highly constrained by planning overlays. About 5% of the suburb sits within a mapped flood overlay, and 67% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is steep, and the median lot measures about 7,349 m² across 232 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 Diamond Valley
Census 2021 figures published by the ABS for the Diamond Valley 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 975, and decile 6 within Queensland. The national average is 1000.
Age profile
Share of Diamond Valley's 489 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Landsborough, the wider ABS statistical area containing Diamond Valley. There is no annual population series published at suburb level, so this describes the surrounding area rather than Diamond Valley itself.
7,248 in 2001 to 21,628 in 2025, up 198%.
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 Diamond Valley 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 →Diamond Valley planning - frequently asked
Where can I see a flood map of Diamond Valley?
The schematic on this page is a Diamond Valley flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 5% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Diamond Valley address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Diamond Valley flood-prone?
About 5% of Diamond Valley falls within a mapped flood overlay, against a Sunshine Coast Regional average of 32%. Looking lot by lot, 23% of the 206 properties we analysed in Diamond Valley carry some level of mapped flood risk, including 31 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 Diamond Valley bushfire-prone?
Yes - around 67% of Diamond Valley is mapped as bushfire-prone, compared with a Sunshine Coast Regional average of 38%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Diamond Valley?
The dominant planning zone in Diamond Valley is Rural, though the suburb also includes Rural Residential and Environmental Management and Conservation. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Diamond Valley have heritage-listed places?
No heritage-listed places are on record within Diamond Valley. Even so, it is worth confirming for an individual property before any works.
Is Diamond Valley hilly or flat?
Diamond Valley is steep: the median lot slope is about 20%, and 68% of properties sit on slopes of 15% or steeper. Ground level runs from roughly 35 m to 174 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 Diamond Valley?
Across 232 surveyed parcels in Diamond Valley, the median lot size is about 7,349 m². There are also 58 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 Diamond Valley?
At the 2021 Census Diamond Valley had 489 usual residents, with a median age of 50 and an average household size of 2.7 people. The wider Landsborough statistical area, which contains Diamond Valley, went from 7,248 people in 2001 to 21,628 in 2025, up 198%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Diamond Valley alone.
Is Diamond Valley an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Diamond Valley scores 975 and sits in decile 5 of 10 nationally and decile 6 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 Diamond Valley?
Median household income in Diamond Valley was $1,760 a week at the 2021 Census, against $1,674 for the typical suburb in Sunshine Coast Regional. Median rent was $396 a week and the median mortgage repayment $1,950 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Diamond Valley property?
A Diamond Valley 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.