Collaroy Plateau vs Cromer, true annual running costs compared 2026
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Collaroy Plateau and Cromer are both Northern Beaches rates (OLG suburbs, sitting 17 km and 16.5 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Collaroy Plateau runs $899 a year cheaper than Cromer, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $10,306.
Over 10 years the gap between these two is about $10,300, about $20 a week, and most of it is the AI-estimated insurance line.
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Cromer
Annual cost breakdown
| Category | Collaroy Plateau | Cromer | Difference |
|---|---|---|---|
| Council rates Official, 2026-27 | $1,766 | $1,766 | - |
| Water & sewerage Official, 2026-27 | $1,548 | $1,548 | - |
| Commute (driving) Modelled, 2026-27 | $4,678 | $4,577 | +$101 |
| Commute (public transport) Modelled, 2026-27 | $2,386 | $2,386 | - |
| Home insurance Estimated | $1,350 | $2,350 | -$1,000 |
| Body corporate (unit) Estimated | $2,300 | $2,300 | - |
| Total (driving) | $9,342 | $10,241 | -$899 |
| Total (public transport) | $7,050 | $8,050 | -$1,000 |
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 | Collaroy Plateau | Cromer | 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, Collaroy Plateau vs Cromer (2026-27)
What the numbers show
Collaroy Plateau and Cromer differ by $899 a year by car, but $1,000 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 $101, so neither suburb is named cheaper here.
The biggest single gap is home insurance at $1,000 per year. Cromer carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $1,000 per year, $7,050 from Collaroy Plateau versus $8,050 from Cromer.
Where the difference actually comes from
- Council rates is identical at $1,766 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Cromer by $101 a year, $4,577 against $4,678.
- Building insurance favours Collaroy Plateau by $1,000 a year, $1,350 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 commute distance and the insurance band.
Flood risk is rated high in Cromer against low in Collaroy Plateau, which feeds the insurance estimate. Fire risk is rated medium in Cromer against low in Collaroy Plateau, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Collaroy Plateau cumulative | Cromer cumulative | Difference |
|---|---|---|---|
| Year 1 | $9,342 | $10,241 | $899 |
| Year 3 | $28,875 | $31,654 | $2,779 |
| Year 5 | $49,598 | $54,371 | $4,773 |
| Year 10 | $107,096 | $117,402 | $10,306 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Collaroy Plateau or Cromer cheaper to live in?
Neither is named cheaper. Collaroy Plateau runs $9,342 a year by car and Cromer $10,241, but most of the $899 difference is the building insurance estimate rather than a published figure. On council rates, water and the commute, which are sourced, the gap is $101. Source: SuburbCost 2026 data.
What are council rates in Collaroy Plateau and Cromer?
Annual council rates for a house are $1,766 in Collaroy Plateau (Northern Beaches rates (OLG) and $1,766 in Cromer (Northern Beaches rates (OLG). Water and sewerage adds $1,548 in Collaroy Plateau and $1,548 in Cromer. 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 Collaroy Plateau and Cromer?
Annual driving commute costs are $4,678 from Collaroy Plateau and $4,577 from Cromer to Sydney CBD (ATO 91c/km). Public transport costs $2,386 from Collaroy Plateau and $2,386 from Cromer.
What is the 10-year cost difference between Collaroy Plateau and Cromer?
At 3% annual cost growth, Collaroy Plateau costs a cumulative $107,096 and Cromer costs $117,402 over 10 years by car. The cumulative difference is $10,306 in favour of Collaroy Plateau. Excludes purchase price, mortgage, and personal expenses.
Which of Collaroy Plateau and Cromer suits you better?
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Sources: Northern Beaches rates (OLG and Northern Beaches 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.