Underbank zoning & planning overlays
A planning-constraint profile of Underbank
(Dungog, NSW) - 50.94 km², mapped from live council and
state overlay data. This suburb is highly constrained on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
50.94 km² - this suburb is highly constrained on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Elevation hillshade with street names, clipped to Underbank's boundary, with the bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft. No flood layer is drawn because we hold no flood mapping for this area.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Underbank
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 2 Oct 2026
Night movements: observed, lowest 9,000 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.
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.
Underbank at a glance
How Underbank is zoned
Buying in Underbank? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 50.94 km², Underbank is highly constrained by the planning overlays we hold. We hold no flood mapping covering this suburb, so no flood figure is shown - that is a gap in our data, not an all-clear. Of what is mapped, 100% is flagged bushfire-prone. There are 2 heritage-listed sites on record, and the dominant land-use zone is Primary Production. The median lot measures about 242,833 m² across 124 parcels.
Who lives in Underbank
Census 2021 figures published by the ABS for the Underbank 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 1032, and decile 7 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Dungog, the wider ABS statistical area containing Underbank. There is no annual population series published at suburb level, so this describes the surrounding area rather than Underbank itself.
8,338 in 2001 to 10,102 in 2025, up 21%.
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.
Underbank data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Not mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 3 October 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 Underbank 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.
Aircraft have been seen below 3,000 ft over about 2% of Underbank. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Underbank lot.
See what's in the $9 report →Underbank planning - frequently asked
Is Underbank flood-prone?
We don't yet hold flood mapping covering Underbank, so this page can't say how much of the suburb is flood-affected - that is a gap in our data, not an indication that the suburb is free of flood risk. Dungog is the authority to check for flood mapping in this area.
Is Underbank bushfire-prone?
Around 100% of Underbank is mapped as bushfire-prone, compared with a Dungog average of 98%.
Is Underbank under a flight path?
Aircraft were observed below 3,000 ft over about 2% of Underbank, and over about 19% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 2,000 ft, with an average of 6,000 ft. 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 Underbank?
The dominant planning zone in Underbank is Primary Production, though the suburb also includes Natural Waterways and Public Recreation.
Does Underbank have heritage-listed places?
Underbank has 2 heritage-listed places on record.
What is the typical lot size in Underbank?
Across 124 surveyed parcels in Underbank, the median lot size is about 242,833 m². There are also 2 registered easements mapped in the suburb.
Does Underbank have a train station?
There is no train station inside Underbank itself. The suburb is served by 8 bus stops.
Is Underbank an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Underbank scores 1032 and sits in decile 8 of 10 nationally and decile 7 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Munni | 5.8 km | Not mapped | 100% |
| Halton | 5.9 km | Not mapped | 100% |
| Allynbrook | 9.6 km | Not mapped | 100% |
| Bandon Grove | 9.9 km | Not mapped | 100% |
| Bingleburra | 10.1 km | Not mapped | 100% |
| Eccleston | 12.0 km | Not mapped | 100% |
| Sugarloaf | 12.9 km | 0% | 100% |
| Bendolba | 13.2 km | 3% | 100% |
| Chichester | 13.4 km | Not mapped | 100% |
| East Gresford | 15.2 km | Not mapped | 98% |