Biggera Waters vs Coombabah, true annual running costs compared 2026
Last updated July 2026 · council rates 2026-27 (QLD), ATO 91c/km, Translink fares, AER electricity benchmarks
Biggera Waters and Coombabah are both City of Gold Coast suburbs, sitting 5.2 km and 7.4 km from Gold Coast CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Biggera Waters runs $2,247 a year cheaper than Coombabah, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $25,759.
Over 10 years the gap between these two is about $25,800, about $50 a week, and most of it is the AI-estimated insurance line.
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Coombabah
Annual cost breakdown
| Category | Biggera Waters | Coombabah | Difference |
|---|---|---|---|
| Council rates Official, 2026-27 | $1,359 | $1,359 | - |
| Water & sewerage Official, 2026-27 | $2,169 | $2,169 | - |
| Commute (driving) Modelled, 2026-27 | $1,699 | $2,346 | -$647 |
| Commute (public transport) Modelled, 2026-27 | $192 | $192 | - |
| Home insurance Estimated | $2,150 | $3,750 | -$1,600 |
| Body corporate (unit) Estimated | $3,200 | $2,800 | +$400 |
| Total (driving) | $7,377 | $9,624 | -$2,247 |
| Total (public transport) | $5,870 | $7,470 | -$1,600 |
Totals exclude electricity, estimated separately below. Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance estimated from ACCC premium rates; actual premiums vary. Council rates: minimum residential general rate (QLD).
| Dwelling | Biggera Waters | Coombabah | Difference |
|---|---|---|---|
| House | $2,135 | $2,135 | - |
| Unit | $1,776 | $1,776 | - |
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, Biggera Waters vs Coombabah (2026-27)
What the numbers show
Biggera Waters and Coombabah differ by $2,247 a year by car, but $1,600 of that is the building insurance estimate rather than a published figure. On the sourced costs, council rates, water and the commute, the gap is $647, so neither suburb is named cheaper here.
The biggest single gap is home insurance at $1,600 per year. Coombabah carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $1,600 per year, $5,870 from Biggera Waters versus $7,470 from Coombabah.
Where the difference actually comes from
- Council rates is identical at $1,359 a year.
- Water and sewerage is identical at $2,169 a year.
- Driving commute favours Biggera Waters by $647 a year, $1,699 against $2,346.
- Building insurance favours Biggera Waters by $1,600 a year, $2,150 against $3,750.
Both suburbs sit in the same council area, so the rates line is identical and none of the difference between them comes from council. What separates them is commute distance and the insurance band.
Flood risk is rated high in Coombabah against medium in Biggera Waters, which feeds the insurance estimate. Fire risk is rated high in Coombabah against low in Biggera Waters, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Biggera Waters cumulative | Coombabah cumulative | Difference |
|---|---|---|---|
| Year 1 | $7,377 | $9,624 | $2,247 |
| Year 3 | $22,802 | $29,747 | $6,945 |
| Year 5 | $39,165 | $51,095 | $11,930 |
| Year 10 | $84,569 | $110,328 | $25,759 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Biggera Waters or Coombabah cheaper to live in?
Neither is named cheaper. Biggera Waters runs $7,377 a year by car and Coombabah $9,624, but most of the $2,247 difference is the building insurance estimate rather than a published figure. On council rates, water and the commute, which are sourced, the gap is $647. Source: SuburbCost 2026 data.
What are council rates in Biggera Waters and Coombabah?
Annual council rates for a house are $1,359 in Biggera Waters (City of Gold Coast) and $1,359 in Coombabah (City of Gold Coast). Water and sewerage adds $2,169 in Biggera Waters and $2,169 in Coombabah. Both figures are the minimum residential general rate; properties on higher land value pay more.
How does the commute cost compare between Biggera Waters and Coombabah?
Annual driving commute costs are $1,699 from Biggera Waters and $2,346 from Coombabah to Gold Coast CBD (ATO 91c/km). Public transport costs $192 from Biggera Waters and $192 from Coombabah.
What is the 10-year cost difference between Biggera Waters and Coombabah?
At 3% annual cost growth, Biggera Waters costs a cumulative $84,569 and Coombabah costs $110,328 over 10 years by car. The cumulative difference is $25,759 in favour of Biggera Waters. Excludes purchase price, mortgage, and personal expenses.
Which of Biggera Waters and Coombabah suits you better?
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Sources: City of Gold Coast and City of Gold Coast rate data, water utility pricing (QLD: Queensland Urban Utilities / Unitywater; NSW: Sydney Water / Hunter Water), ATO 91c/km, and SuburbCost insurance estimates from ACCC premium rates. Data updated July 2026.