Bilinga vs Cobaki Lakes: true annual running costs compared (2026)
Last updated July 2026 · council rates 2026-27 (QLD), ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Bilinga (City of Gold Coast) and Cobaki Lakes (Tweed rates (OLG) attract comparison from buyers considering suburbs across different council areas.
Bilinga runs $12,428 a year cheaper than Cobaki Lakes, driven mostly by the commute. Over 10 years at 3% growth that gap compounds to about $142,473.
Over 10 years, Bilinga costs about $142,500 less to run than Cobaki Lakes — the same as paying $142,500 less for the home. It's the cost no listing shows you.
Get the free report: 10-year costs, flood & fire risk, crime, schools and overall verdict →Bilinga
Cobaki Lakes
Annual cost breakdown
| Category | Bilinga | Cobaki Lakes | Difference |
|---|---|---|---|
| Council rates | $1,359 | $1,799 | -$440 |
| Water & sewerage | $2,169 | $1,300 | +$869 |
| Commute (driving) | $5,843 | $18,200 | -$12,357 |
| Commute (public transport) | $192 | $2,400 | -$2,208 |
| Home insurance | $3,000 | $3,500 | -$500 |
| Body corporate (unit) | $2,200 | $1,500 | +$700 |
| Total (driving) | $12,371 | $24,799 | -$12,428 |
| Total (public transport) | $6,720 | $8,999 | -$2,279 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: Cobaki Lakes is the average residential rate (NSW, IPART-uplifted), Bilinga is the minimum residential general rate (QLD).
| Dwelling | Bilinga | Cobaki Lakes | Difference |
|---|---|---|---|
| House | $2,135 | $2,774 | -$639 |
| Unit | $1,776 | $2,329 | -$553 |
Estimated from AER residential benchmarks for each suburb's climate zone at 2026-27 regulated prices for each suburb's electricity network, including supply charge (AER Default Market Offer caps, or the QCA price in regional Queensland; unit ≈ 75% of a house). Get the free report for a breakdown by your exact number of occupants.
Cost breakdown chart
Annual cost breakdown — Bilinga vs Cobaki Lakes (2026-27)
What the numbers show
Bilinga costs $12,428 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $142,473 in favour of Bilinga.
The biggest single gap is commute costs at $12,357 per year. Cobaki Lakes is more than 100 km from Sydney CBD, so its driving figure is a flat regional allowance of about 20,000 km of household driving a year rather than a commute.
On public transport the gap is $2,279 per year, $6,720 from Bilinga versus $8,999 from Cobaki Lakes.
Where the difference actually comes from
- Council rates favours Bilinga by $440 a year, $1,359 against $1,799.
- Water and sewerage favours Cobaki Lakes by $869 a year, $1,300 against $2,169.
- Driving commute favours Bilinga by $12,357 a year, $5,843 against $18,200.
- Building insurance favours Bilinga by $500 a year, $3,000 against $3,500.
They sit in different council areas, so the rates line is set by two different councils. For QLD that figure is the minimum residential general rate for an owner-occupied principal place of residence, a floor rather than a typical bill.
Fire risk is rated high in Cobaki Lakes against medium in Bilinga, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Bilinga cumulative | Cobaki Lakes cumulative | Difference |
|---|---|---|---|
| Year 1 | $12,371 | $24,799 | $12,428 |
| Year 3 | $38,238 | $76,651 | $38,413 |
| Year 5 | $65,679 | $131,661 | $65,982 |
| Year 10 | $141,820 | $284,293 | $142,473 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Bilinga or Cobaki Lakes cheaper to live in?
Bilinga is cheaper to run by car at $12,371 per year versus $24,799 for Cobaki Lakes, a difference of $12,428 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Bilinga and Cobaki Lakes?
Annual council rates for a house are $1,359 in Bilinga (City of Gold Coast) and $1,799 in Cobaki Lakes (Tweed rates (OLG). Water and sewerage adds $2,169 in Bilinga and $1,300 in Cobaki Lakes. Cobaki Lakes's figure is the average residential rate reported to the NSW Office of Local Government (IPART-uplifted); Bilinga's is the minimum residential general rate for Queensland.
How does the commute cost compare between Bilinga and Cobaki Lakes?
Bilinga is $5,843 a year to drive to Gold Coast CBD (ATO 91c/km). Cobaki Lakes carries a flat regional driving allowance of $18,200, about 20,000 km of household driving a year, because it is more than 100 km from Sydney CBD. Public transport costs $192 from Bilinga and $2,400 from Cobaki Lakes.
What is the 10-year cost difference between Bilinga and Cobaki Lakes?
At 3% annual cost growth, Bilinga costs a cumulative $141,820 and Cobaki Lakes costs $284,293 over 10 years by car. The cumulative difference is $142,473 in favour of Bilinga. Excludes purchase price, mortgage, and personal expenses.
Which of Bilinga and Cobaki Lakes 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.
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Sources: City of Gold Coast and Tweed rates (OLG rate data, water utility pricing (QLD: Queensland Urban Utilities / Unitywater; NSW: Sydney Water / Hunter Water), ATO 91c/km, and SuburbCost AI insurance estimates. Data updated July 2026.