Bateau Bay vs Tumbi Umbi, true annual running costs compared 2026
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Bateau Bay and Tumbi Umbi are both Central Coast rates (OLG suburbs, sitting 59.3 km and 59.3 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Bateau Bay runs $300 a year cheaper than Tumbi Umbi, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $3,439.
Over 10 years the gap between these two is about $3,400, about $7 a week, and most of it is the AI-estimated insurance line.
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Tumbi Umbi
Annual cost breakdown
| Category | Bateau Bay | Tumbi Umbi | Difference |
|---|---|---|---|
| Council rates Official, 2026-27 | $1,454 | $1,454 | - |
| Water & sewerage Estimated | $1,300 | $1,300 | - |
| Commute (driving) Modelled, 2026-27 | $5,362 | $5,362 | - |
| Commute (public transport) Modelled, 2026-27 | $2,400 | $2,400 | - |
| Home insurance Estimated | $1,650 | $1,950 | -$300 |
| Body corporate (unit) Estimated | $2,100 | $2,100 | - |
| Total (driving) | $9,766 | $10,066 | -$300 |
| Total (public transport) | $6,804 | $7,104 | -$300 |
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: average residential rate (NSW, IPART-uplifted).
| Dwelling | Bateau Bay | Tumbi Umbi | Difference |
|---|---|---|---|
| House | $2,342 | $2,342 | - |
| Unit | $1,909 | $1,909 | - |
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, Bateau Bay vs Tumbi Umbi (2026-27)
What the numbers show
Bateau Bay and Tumbi Umbi differ by $300 a year by car, but $300 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 $0, so neither suburb is named cheaper here.
The biggest single gap is home insurance at $300 per year. Tumbi Umbi carries medium flood risk, which pushes estimated premiums higher.
On public transport the gap is $300 per year, $6,804 from Bateau Bay versus $7,104 from Tumbi Umbi.
Where the difference actually comes from
- Council rates is identical at $1,454 a year.
- Water and sewerage is identical at $1,300 a year.
- Driving commute is identical at $5,362 a year.
- Building insurance favours Bateau Bay by $300 a year, $1,650 against $1,950.
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 the insurance band.
Fire risk is rated high in Tumbi Umbi against medium in Bateau Bay, which feeds the insurance estimate. The catchment state school scores 6.7 in Bateau Bay against 5.1 in Tumbi Umbi, on ACARA's ICSEA percentile scaled to ten.
10-year cumulative cost projection
| Year | Bateau Bay cumulative | Tumbi Umbi cumulative | Difference |
|---|---|---|---|
| Year 1 | $9,766 | $10,066 | $300 |
| Year 3 | $30,186 | $31,113 | $927 |
| Year 5 | $51,849 | $53,442 | $1,593 |
| Year 10 | $111,956 | $115,395 | $3,439 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Bateau Bay or Tumbi Umbi cheaper to live in?
Neither is named cheaper. Bateau Bay runs $9,766 a year by car and Tumbi Umbi $10,066, but most of the $300 difference is the building insurance estimate rather than a published figure. On council rates, water and the commute, which are sourced, the gap is $0. Source: SuburbCost 2026 data.
What are council rates in Bateau Bay and Tumbi Umbi?
Annual council rates for a house are $1,454 in Bateau Bay (Central Coast rates (OLG) and $1,454 in Tumbi Umbi (Central Coast rates (OLG). Water and sewerage adds $1,300 in Bateau Bay and $1,300 in Tumbi Umbi. 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 Bateau Bay and Tumbi Umbi?
Annual driving commute costs are $5,362 from Bateau Bay and $5,362 from Tumbi Umbi to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Bateau Bay and $2,400 from Tumbi Umbi.
What is the 10-year cost difference between Bateau Bay and Tumbi Umbi?
At 3% annual cost growth, Bateau Bay costs a cumulative $111,956 and Tumbi Umbi costs $115,395 over 10 years by car. The cumulative difference is $3,439 in favour of Bateau Bay. Excludes purchase price, mortgage, and personal expenses.
Which of Bateau Bay and Tumbi Umbi suits you better?
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Sources: Central Coast rates (OLG and Central Coast rates (OLG 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.