Welsby flood map & planning overlays
Welsby has the biggest blocks in Moreton Bay City: a 133 ha median.
Things you won't regret: spending $9 to know the lot before you commit.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Welsby
(Moreton Bay City, QLD) - 67.99 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
67.99 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Welsby'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 Welsby properties?
Counts of properties, not share of land, across 3 analysed Welsby properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 3 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Welsby.
Aircraft noise and flight paths over Welsby
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 1,000 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.
Welsby at a glance
Schools in and near Welsby
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: 1.68 km from the suburb boundary
Secondary: 5.93 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 Welsby is zoned
Selling in Welsby? 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 67.99 km², Welsby is highly constrained by planning overlays. About 43% of the suburb sits within a mapped flood overlay, and 91% is flagged bushfire-prone. The dominant land-use zone is Environmental management and conservation. The terrain is largely flat, and the median lot measures about 1,325,010 m² across 25 parcels.
Recent development applications in Welsby
Applications are counted across the whole gazetted suburb from the public Moreton Bay Regional Council register. No application address or individual property is published here.
Submitted in the past 12 months
No geocoded application submissions were found for this suburb in the period.
Counts depend on applications that the council publishes and that can be assigned to a suburb. Categories can overlap when one application covers several types. Totals below five and their latest dates are suppressed. Register last synchronised 8 November 2026. Check the official council register.
Welsby property market snapshot
Queensland Government publishes this as a SA2 market series for Bribie Island, the wider statistical area containing Welsby. It is not a valuation and is not specific to this suburb or any individual property.
House sales
Median sale price from 397 sales over 12 months to March 2026.
Unit sales
Median sale price from 188 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.
Welsby 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 | Not 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) |
| Development applications | Available as suburb totals | Moreton Bay Regional Council |
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 Welsby 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 Welsby. 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 Welsby. 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 Welsby lot.
Welsby planning - frequently asked
Is Welsby flood-prone?
About 43% of Welsby falls within a mapped flood overlay, against the council-wide suburb average of 39%. Across the suburb, 100% of the 3 properties we analysed carry some level of mapped flood risk, including 2 rated high risk or historically affected. Published flood models are held over parts of Welsby; the free check on the Flood Model Report page says whether one reaches a given address.
Is Welsby bushfire-prone?
Around 91% of Welsby is mapped as bushfire-prone, compared with a Moreton Bay City average of 59%.
Is Welsby under a flight path?
Aircraft were observed below 3,000 ft over about 100% of Welsby, in the period sampled (4 Sep 2026 to 7 Nov 2026). The lowest measured aircraft was at 500 ft, with an average of 2,000 ft. At the busiest point in the suburb about 6 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 Welsby?
The dominant planning zone in Welsby is Environmental management and conservation, though the suburb also includes Rural and General residential.
Does Welsby have heritage-listed places?
No heritage-listed places are on record within Welsby.
Is Welsby hilly or flat?
Welsby is largely flat: the median ground slope is about 3%. Ground level runs from roughly 6 m to 8 m AHD across the suburb.
What is the typical lot size in Welsby?
Across 25 surveyed parcels in Welsby, the median lot size is about 1,325,010 m².
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| White Patch | 5.3 km | 31% | 52% |
| Donnybrook | 5.6 km | 84% | 50% |
| Toorbul | 6.2 km | 77% | 52% |
| Banksia Beach | 6.6 km | 75% | 31% |
| Meldale | 6.9 km | 91% | 37% |
| Bellara | 9.1 km | 66% | 17% |
| Woorim | 9.8 km | 58% | 97% |
| Sandstone Point | 10.4 km | 47% | 41% |
| Godwin Beach | 11.4 km | 94% | 67% |
| Ningi | 11.4 km | 68% | 75% |