Tanah Merah flood map & planning overlays
Tanah Merah: 4,754 residents on 806 m² lots, and 50.4% flood-mapped.
Most lots here are flood-mapped. The free check shows how much of one lot the overlay covers.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Tanah Merah
(Logan City, QLD) - 4.04 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
4.04 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Tanah Merah'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
How common is mapped flood risk across Tanah Merah properties?
Counts of properties, not share of land, across 2,129 analysed Tanah Merah properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 2,129 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Tanah Merah.
Has Tanah Merah flooded? Flood history and overland flow
Yes. Recorded flood mapping reaches into Tanah Merah: 57 of the 2,129 properties we analysed (2.7%) sit at least partly inside a mapped historical flood extent (Historic Flood 1974: 57, Historic Flood 2022: 43, Historic Flood 2017: 39). The free address check says whether a given lot is inside one.
Suburb-wide totals across 2,129 analysed properties; they do not identify or describe any individual property.
Recorded historical flood mapping
57 analysed properties intersect at least one mapped historical event extent.
- Historic Flood 1974: 57
- Historic Flood 2022: 43
- Historic Flood 2017: 39
Mapped overland flow
1,140 analysed properties carry a mapped overland-flow category.
- Low: 1,140
Source: Logan City Council flood mapping, aggregated by LayeredGeo. Categories are only shown where at least five analysed properties share them. An address-level check is still required to determine whether a particular lot is mapped.
Aircraft noise and flight paths over Tanah Merah
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 2 a day
Night movements: observed, lowest 7,000 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.
Tanah Merah at a glance
Schools in and near Tanah Merah
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: 0.14 km from the suburb boundary
Secondary: 0.50 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 Tanah Merah is zoned
Selling in Tanah Merah? 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 4.04 km², Tanah Merah is highly constrained by planning overlays. About 50% of the suburb sits within a mapped flood overlay, and 32% is flagged bushfire-prone. The dominant land-use zone is Low Density Residential. The terrain is gently undulating, and the median lot measures about 806 m² across 1,988 parcels.
Who lives in Tanah Merah
Census 2021 figures published by the ABS for the Tanah Merah 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 986, and decile 7 within Queensland. The national average is 1000.
Age profile
Share of Tanah Merah's 4,754 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Loganholme - Tanah Merah, the wider ABS statistical area containing Tanah Merah. There is no annual population series published at suburb level, so this describes the surrounding area rather than Tanah Merah itself.
9,651 in 2001 to 12,700 in 2025, up 32%.
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.
Tanah Merah property market snapshot
Queensland Government publishes this as a SA2 market series for Loganholme - Tanah Merah, the wider statistical area containing Tanah Merah. It is not a valuation and is not specific to this suburb or any individual property.
House sales
Median sale price from 186 sales over 12 months to March 2026.
Unit sales
Median sale price from 30 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.
Tanah Merah 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 Tanah Merah 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 100% of Tanah Merah. 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 Tanah Merah. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
The Terrain Report shows the fall of the block - contours, cross sections and a 3D model of the lot to spin round in your browser (+$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 Tanah Merah lot.
Tanah Merah planning - frequently asked
Is Tanah Merah flood-prone?
About 50% of Tanah Merah falls within a mapped flood overlay, against the council-wide suburb average of 48%. Across the suburb, 40% of the 2,129 properties we analysed carry some level of mapped flood risk, including 75 rated high risk or historically affected. Published flood models are held over parts of Tanah Merah; the free check on the Flood Model Report page says whether one reaches a given address.
Has Tanah Merah flooded?
Yes. Recorded flood mapping reaches into Tanah Merah: 57 of the 2,129 properties we analysed (2.7%) sit at least partly inside a mapped historical flood extent (Historic Flood 1974: 57, Historic Flood 2022: 43, Historic Flood 2017: 39). The free address check says whether a given lot is inside one.
Is Tanah Merah bushfire-prone?
Around 32% of Tanah Merah is mapped as bushfire-prone, compared with a Logan City average of 54%.
Is Tanah Merah under a flight path?
Aircraft were observed below 3,000 ft over about 100% of Tanah Merah, in the period sampled (4 Sep 2026 to 7 Nov 2026). The lowest measured aircraft was at 500 ft, with an average of 2,500 ft. At the busiest point in the suburb about 9 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 Tanah Merah?
The dominant planning zone in Tanah Merah is Low Density Residential, though the suburb also includes Rural and Recreation and Open Space.
Does Tanah Merah have heritage-listed places?
No heritage-listed places are on record within Tanah Merah.
Is Tanah Merah hilly or flat?
Tanah Merah is gently undulating: the median ground slope is about 7%, and 18% of measured points sit on grades of 15% or steeper. Ground level runs from roughly 11 m to 73 m AHD across the suburb.
What is the typical lot size in Tanah Merah?
Across 1,988 surveyed parcels in Tanah Merah, the median lot size is about 806 m². There are also 284 registered easements mapped in the suburb.
Does Tanah Merah have a train station?
There is no train station inside Tanah Merah itself. The suburb is served by 10 bus stops.
What is the population of Tanah Merah?
At the 2021 Census Tanah Merah had 4,754 usual residents, with a median age of 37 and an average household size of 2.8 people. The wider Loganholme - Tanah Merah statistical area, which contains Tanah Merah, went from 9,651 people in 2001 to 12,700 in 2025, up 32%.
Is Tanah Merah an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Tanah Merah scores 986 and sits in decile 5 of 10 nationally and decile 7 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Tanah Merah?
Median household income in Tanah Merah was $1,899 a week at the 2021 Census, against $1,924 for the typical suburb in Logan City. Median rent was $380 a week and the median mortgage repayment $1,733 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bethania | 2.2 km | 88% | 13% |
| Shailer Park | 2.3 km | 27% | 27% |
| Loganholme | 2.6 km | 87% | 34% |
| Meadowbrook | 2.6 km | 97% | 29% |
| Loganlea | 3.5 km | 80% | 13% |
| Edens Landing | 3.6 km | 39% | 21% |
| Cornubia | 4.3 km | 39% | 77% |
| Holmview | 4.6 km | 32% | 70% |
| Waterford West | 4.7 km | 87% | 30% |
| Daisy Hill | 4.8 km | 29% | 59% |