Coomba Park vs Wallis Lake, true annual running costs compared 2026
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Coomba Park and Wallis Lake are both Mid-Coast rates (OLG suburbs, and are commonly compared by buyers weighing up running costs within the same council area.
The two sit within $250 a year of each other to run, so running cost is a minor factor here. The decision comes down to schools, risk and lifestyle, all in the free report.
Over 10 years the gap between these two is about $2,900, about $6 a week, and most of it is the AI-estimated insurance line.
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Wallis Lake
Annual cost breakdown
| Category | Coomba Park | Wallis Lake | Difference |
|---|---|---|---|
| Council rates Official, 2026-27 | $1,609 | $1,609 | - |
| Water & sewerage Estimated | $1,300 | $1,300 | - |
| Commute (driving) Modelled, 2026-27 | $18,200 | $18,200 | - |
| Commute (public transport) Modelled, 2026-27 | $18,200 | $18,200 | - |
| Home insurance Estimated | $2,350 | $2,100 | +$250 |
| Body corporate (unit) Estimated | $1,500 | $1,500 | - |
| Total (driving) | $23,459 | $23,209 | +$250 |
| Total (public transport) | $23,459 | $23,209 | +$250 |
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 | Coomba Park | Wallis Lake | Difference |
|---|---|---|---|
| House | $2,827 | $2,827 | - |
| Unit | $2,369 | $2,369 | - |
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, Coomba Park vs Wallis Lake (2026-27)
What the numbers show
Coomba Park and Wallis Lake differ by $250 a year by car, but $250 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 $250 per year. Coomba Park carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $250 per year, $23,459 from Coomba Park versus $23,209 from Wallis Lake.
Where the difference actually comes from
- Council rates is identical at $1,609 a year.
- Water and sewerage is identical at $1,300 a year.
- Driving commute is identical at $18,200 a year.
- Building insurance favours Wallis Lake by $250 a year, $2,100 against $2,350.
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 medium in Coomba Park against low in Wallis Lake, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Coomba Park cumulative | Wallis Lake cumulative | Difference |
|---|---|---|---|
| Year 1 | $23,459 | $23,209 | $250 |
| Year 3 | $72,509 | $71,737 | $772 |
| Year 5 | $124,547 | $123,220 | $1,327 |
| Year 10 | $268,931 | $266,065 | $2,866 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Coomba Park or Wallis Lake cheaper to live in?
Neither is named cheaper. Coomba Park runs $23,459 a year by car and Wallis Lake $23,209, but most of the $250 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 Coomba Park and Wallis Lake?
Annual council rates for a house are $1,609 in Coomba Park (Mid-Coast rates (OLG) and $1,609 in Wallis Lake (Mid-Coast rates (OLG). Water and sewerage adds $1,300 in Coomba Park and $1,300 in Wallis Lake. 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 Coomba Park and Wallis Lake?
Coomba Park 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. Wallis Lake 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. No daily public transport commute is assumed from either suburb, so both are costed by car.
What is the 10-year cost difference between Coomba Park and Wallis Lake?
At 3% annual cost growth, Coomba Park costs a cumulative $268,931 and Wallis Lake costs $266,065 over 10 years by car. The cumulative difference is $2,866 in favour of Wallis Lake. Excludes purchase price, mortgage, and personal expenses.
Which of Coomba Park and Wallis Lake suits you better?
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Sources: Mid-Coast rates (OLG and Mid-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.