Undullah flood map & planning overlays
80.6% landslide-mapped, the most in Logan City, on 37 ha holdings.
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A planning-constraint profile of Undullah
(Logan City, QLD) - 53.05 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
53.05 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Undullah's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Undullah
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 7 Nov 2026
typical observed square 1 a day
Night movements: observed, lowest 7,500 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
How this is measured
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Undullah at a glance
Schools in and near Undullah
Public school-location data shows availability across the suburb; it does not rate schools or assign any individual address to a catchment.
Inside the suburb boundary
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 4.13 km from the suburb boundary
Secondary: 4.13 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time; use the official catchment finder for a specific address.
How Undullah is zoned
Selling in Undullah? 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 53.05 km², Undullah is highly constrained by planning overlays. About 18% of the suburb sits within a mapped flood overlay, and 94% is flagged bushfire-prone. The dominant land-use zone is Emerging Community. The median lot measures about 370,139 m² across 58 parcels.
Who lives in Undullah
Census 2021 figures published by the ABS for the Undullah 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 1002, and decile 8 within Queensland. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Flagstone (West) - New Beith, the wider ABS statistical area containing Undullah. There is no annual population series published at suburb level, so this describes the surrounding area rather than Undullah itself.
1,654 in 2001 to 13,360 in 2025, up 708%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Undullah property market snapshot
Queensland Government publishes this as a SA2 market series for Flagstone (West) - New Beith, the wider statistical area containing Undullah. It is not a valuation and is not specific to this suburb or any individual property.
House sales
Median sale price from 248 sales over 12 months to March 2026.
Source: Queensland Government Statistician's Office (QGSO). View the source profile. The same SA2 figure can appear on several suburb pages within that statistical area.
Undullah data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Bushfire-prone mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Zoning | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Heritage and environment | Mapped where published | the relevant council planning scheme and Queensland Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the relevant council planning scheme and Queensland Government spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
| Market statistics | Available at SA2 level | Queensland Government Statistician's Office (QGSO) |
Profile last materially updated 7 November 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Undullah 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 →Aircraft have been seen below 3,000 ft over about 92% of Undullah. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Undullah. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Undullah lot.
Undullah planning - frequently asked
Is Undullah flood-prone?
About 18% of Undullah falls within a mapped flood overlay, against the council-wide suburb average of 48%. Published flood models are held over parts of Undullah; the free check on the Flood Model Report page says whether one reaches a given address.
Is Undullah bushfire-prone?
Around 94% of Undullah is mapped as bushfire-prone, compared with a Logan City average of 54%.
Is Undullah under a flight path?
Aircraft were observed below 3,000 ft over about 92% of Undullah, and over about 98% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 7 Nov 2026). The lowest measured aircraft was at 500 ft, with an average of 4,500 ft. At the busiest point in the suburb about 14 aircraft a day were recorded passing over one 500 m square. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Undullah?
The dominant planning zone in Undullah is Emerging Community, though the suburb also includes Environmental Management and Conservation and Rural.
Does Undullah have heritage-listed places?
No heritage-listed places are on record within Undullah.
What is the typical lot size in Undullah?
Across 58 surveyed parcels in Undullah, the median lot size is about 370,139 m².
Is Undullah an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Undullah scores 1002 and sits in decile 6 of 10 nationally and decile 8 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Flinders Lakes | 4.3 km | 22% | 91% |
| Undullah Scenic Rim Regional |
5.4 km | 18% | 96% |
| Lyons | 5.8 km | 21% | 97% |
| Kagaru | 6.8 km | 67% | 41% |
| Kagaru Scenic Rim Regional |
7.1 km | 35% | 46% |
| Monarch Glen | 7.2 km | 24% | 100% |
| Washpool Scenic Rim Regional |
7.7 km | 9% | 58% |
| Peak Crossing Ipswich City |
7.8 km | 12% | 77% |
| Silverbark Ridge | 8.9 km | 27% | 96% |
| Woolooman Scenic Rim Regional |
9.0 km | 5% | 80% |