Trenayr flood map & planning overlays
A planning-constraint profile of Trenayr
(Clarence Valley, NSW) - 10.93 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
10.93 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Trenayr's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Trenayr
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 to
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Trenayr at a glance
How Trenayr is zoned
Buying in Trenayr? 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 10.93 km², Trenayr is highly constrained by planning overlays. About 39% of the suburb sits within a mapped flood overlay, and 92% is flagged bushfire-prone. There are 19 heritage-listed sites on record, and the dominant land-use zone is Rural Landscape. The median lot measures about 9,820 m² across 72 parcels.
Who lives in Trenayr
Census 2021 figures published by the ABS for the Trenayr 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 921, and decile 2 within New South Wales. The national average is 1000.
Age profile
Share of Trenayr's 71 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Grafton, the wider ABS statistical area containing Trenayr. There is no annual population series published at suburb level, so this describes the surrounding area rather than Trenayr itself.
18,513 in 2001 to 19,905 in 2025, up 8%.
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.
Trenayr 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 | 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 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 Trenayr 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 Trenayr lot.
See what's in the $9 report →Trenayr planning - frequently asked
Is Trenayr flood-prone?
About 39% of Trenayr falls within a mapped flood overlay, against the council-wide suburb average of 24%.
Is Trenayr bushfire-prone?
Around 92% of Trenayr is mapped as bushfire-prone, compared with a Clarence Valley average of 94%.
Is Trenayr under a flight path?
No aircraft were observed over Trenayr in the period sampled (recent weeks to now). Sampling is intermittent, so that is a floor rather than proof that none fly over. 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 Trenayr?
The dominant planning zone in Trenayr is Rural Landscape, though the suburb also includes Primary Production and General Industrial.
Does Trenayr have heritage-listed places?
Trenayr has 19 heritage-listed places on record.
What is the typical lot size in Trenayr?
Across 72 surveyed parcels in Trenayr, the median lot size is about 9,820 m². There are also 2 registered easements mapped in the suburb.
Does Trenayr have a train station?
There is no train station inside Trenayr itself. The suburb is served by 4 bus stops.
What is the population of Trenayr?
At the 2021 Census Trenayr had 71 usual residents, with a median age of 53 and an average household size of 2.5 people. The wider Grafton statistical area, which contains Trenayr, went from 18,513 people in 2001 to 19,905 in 2025, up 8%.
Is Trenayr an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Trenayr scores 921 and sits in decile 2 of 10 nationally and decile 2 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Trenayr?
Median household income in Trenayr was $1,062 a week at the 2021 Census, against $1,187 for the typical suburb in Clarence Valley. Median rent was $134 a week and the median mortgage repayment $882 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Koolkhan | 2.7 km | 18% | 73% |
| Alumy Creek | 3.1 km | 99% | 100% |
| Kyarran | 3.7 km | 7% | 100% |
| Mountain View | 3.8 km | 3% | 99% |
| Crowther Island | 3.9 km | 100% | 52% |
| Junction Hill | 3.9 km | 57% | 67% |
| Seelands | 4.4 km | 16% | 96% |
| Great Marlow | 4.5 km | 99% | 84% |
| Southgate | 5.1 km | 60% | 95% |
| Warragai Creek | 5.4 km | 0% | 100% |