Crowther Island vs Trenayr: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 88c/km, Opal & Translink fares, AER electricity benchmarks
Crowther Island and Trenayr are both Clarence Valley rates (OLG suburbs, sitting 498.9 km and 500.7 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Crowther Island runs $300 a year cheaper than Trenayr, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $3,439.
Over 10 years these two cost about the same to run. The difference here isn't money — it's location, schools and lifestyle.
Get the free report: 10-year costs, flood & fire risk, crime, schools and overall verdict →Crowther Island
Trenayr
Annual cost breakdown
| Category | Crowther Island | Trenayr | Difference |
|---|---|---|---|
| Council rates | $1,439 | $1,439 | - |
| Water & sewerage | $1,300 | $1,300 | - |
| Commute (driving) | $17,600 | $17,600 | - |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $2,800 | $3,100 | -$300 |
| Body corporate (unit) | $1,500 | $1,500 | - |
| Total (driving) | $23,139 | $23,439 | -$300 |
| Total (public transport) | $7,939 | $8,239 | -$300 |
Green = cheaper. Commute: ATO 88c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Crowther Island | Trenayr | Difference |
|---|---|---|---|
| House | $2,098 | $2,098 | - |
| Unit | $1,679 | $1,679 | - |
Estimated from AER residential benchmarks for each suburb's climate zone at 2025 rates (QLD 30c/kWh, NSW 33c/kWh incl. supply charge; unit ≈ 75% of a house). Get the free report for a breakdown by your exact number of occupants.
Cost breakdown chart
Annual cost breakdown — Crowther Island vs Trenayr (2026-27)
What the numbers show
Crowther Island costs $300 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $3,439 in favour of Crowther Island.
The biggest single gap is home insurance at $300 per year. Trenayr carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $300 per year, $7,939 from Crowther Island versus $8,239 from Trenayr.
10-year cumulative cost projection
| Year | Crowther Island cumulative | Trenayr cumulative | Difference |
|---|---|---|---|
| Year 1 | $23,139 | $23,439 | $300 |
| Year 3 | $71,520 | $72,448 | $928 |
| Year 5 | $122,848 | $124,441 | $1,593 |
| Year 10 | $265,263 | $268,702 | $3,439 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Crowther Island or Trenayr cheaper to live in?
Crowther Island is cheaper to run by car at $23,139 per year versus $23,439 for Trenayr, a difference of $300 annually. Figures cover council rates, water, commute (ATO 88c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Crowther Island and Trenayr?
Annual council rates for a house are $1,439 in Crowther Island (Clarence Valley rates (OLG) and $1,439 in Trenayr (Clarence Valley rates (OLG). Water and sewerage adds $1,300 in Crowther Island and $1,300 in Trenayr. Both figures are the average residential rate reported to the Office of Local Government, uplifted by each council's IPART rate peg.
How does the commute cost compare between Crowther Island and Trenayr?
Annual driving commute costs are $17,600 from Crowther Island and $17,600 from Trenayr to Sydney CBD (ATO 88c/km). Public transport costs $2,400 from Crowther Island and $2,400 from Trenayr.
What is the 10-year cost difference between Crowther Island and Trenayr?
At 3% annual cost growth, Crowther Island costs a cumulative $265,263 and Trenayr costs $268,702 over 10 years by car. The cumulative difference is $3,439 in favour of Crowther Island. Excludes purchase price, mortgage, and personal expenses.
Which of Crowther Island and Trenayr is best to actually live in?
You've got the costs. Get the free personalised report for the rest: a clear verdict on which suburb wins, the full flood, fire and crime risk profile, nearest schools, estimated electricity cost by number of occupants, and your own loan or rent stress-tested over 10 years. No spam.
Related comparisons
Sources: Clarence Valley rates (OLG and Clarence Valley rates (OLG rate data, water utility pricing (QLD: Queensland Urban Utilities / Unitywater; NSW: Sydney Water / Hunter Water), ATO 88c/km, and SuburbCost AI insurance estimates. Data updated July 2026.