One Tree zoning & planning overlays
A planning-constraint profile of One Tree
(Hay, NSW) - 1628.54 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
1628.54 km² - this suburb is relatively unconstrained 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 One Tree's boundary, with the bushfire and environmental overlays drawn on top. No flood layer is drawn because we hold no flood mapping for this area.
Nearby suburbs, nearest first
One Tree at a glance
How One Tree is zoned
Buying in One Tree? 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 1628.54 km², One Tree is relatively unconstrained 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, 2% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Primary Production. The median lot measures about 1,321,559 m² across 518 parcels.
Who lives in One Tree
Census 2021 figures published by the ABS for the One Tree 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 1068, and decile 9 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Hay, the wider ABS statistical area containing One Tree. There is no annual population series published at suburb level, so this describes the surrounding area rather than One Tree itself.
3,620 in 2001 to 2,926 in 2025, down 19%.
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.
One Tree 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 | Not watched | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 26 September 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 One Tree 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a One Tree lot.
See what's in the $9 report →One Tree planning - frequently asked
Is One Tree flood-prone?
We don't yet hold flood mapping covering One Tree, 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. Hay is the authority to check for flood mapping in this area.
Is One Tree bushfire-prone?
Around 2% of One Tree is mapped as bushfire-prone, compared with a Hay average of 8%.
What is the zoning in One Tree?
The dominant planning zone in One Tree is Primary Production, though the suburb also includes National Parks and Nature Reserves and Infrastructure.
Does One Tree have heritage-listed places?
One Tree has 1 heritage-listed place on record.
What is the typical lot size in One Tree?
Across 518 surveyed parcels in One Tree, the median lot size is about 1,321,559 m².
Is One Tree an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), One Tree scores 1068 and sits in decile 9 of 10 nationally and decile 9 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 |
|---|---|---|---|
| Hay | 24.2 km | Not mapped | 3% |
| Corrong Balranald |
44.5 km | Not mapped | 98% |
| Gunbar Carrathool |
46.6 km | Not mapped | 2% |
| Booligal | 52.6 km | Not mapped | 27% |
| Carrathool Murrumbidgee |
53.7 km | Not mapped | 2% |
| Hay South | 55.7 km | Not mapped | 3% |
| Maude | 74.6 km | Not mapped | 8% |
| Booroorban Edward River |
78.1 km | Not mapped | 61% |
| Warrawidgee Carrathool |
79.1 km | Not mapped | 35% |
| Merriwagga Carrathool |
79.5 km | Not mapped | 4% |