Castle Cove vs Castlecrag: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Castle Cove and Castlecrag are both Willoughby rates (OLG suburbs, sitting 9.1 km and 7.8 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Castlecrag runs $808 a year cheaper than Castle Cove, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $9,262.
Over 10 years, Castlecrag costs about $9,300 less to run than Castle Cove — the same as paying $9,300 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 →Castle Cove
Castlecrag
Annual cost breakdown
| Category | Castle Cove | Castlecrag | Difference |
|---|---|---|---|
| Council rates | $1,341 | $1,341 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $2,818 | $2,460 | +$358 |
| Commute (public transport) | $1,920 | $1,920 | - |
| Home insurance | $2,600 | $2,150 | +$450 |
| Body corporate (unit) | $2,600 | $2,600 | - |
| Total (driving) | $8,307 | $7,499 | +$808 |
| Total (public transport) | $7,409 | $6,959 | +$450 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Castle Cove | Castlecrag | 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 — Castle Cove vs Castlecrag (2026-27)
What the numbers show
Castlecrag costs $808 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $9,262 in favour of Castlecrag.
The biggest single gap is home insurance at $450 per year. Castle Cove carries medium flood risk, which pushes estimated premiums higher.
On public transport the gap is $450 per year, $7,409 from Castle Cove versus $6,959 from Castlecrag.
Where the difference actually comes from
- Council rates is identical at $1,341 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Castlecrag by $358 a year, $2,460 against $2,818.
- Building insurance favours Castlecrag by $450 a year, $2,150 against $2,600.
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 medium in Castle Cove against low in Castlecrag, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Castle Cove cumulative | Castlecrag cumulative | Difference |
|---|---|---|---|
| Year 1 | $8,307 | $7,499 | $808 |
| Year 3 | $25,676 | $23,179 | $2,497 |
| Year 5 | $44,103 | $39,813 | $4,290 |
| Year 10 | $95,230 | $85,968 | $9,262 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Castle Cove or Castlecrag cheaper to live in?
Castlecrag is cheaper to run by car at $7,499 per year versus $8,307 for Castle Cove, a difference of $808 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Castle Cove and Castlecrag?
Annual council rates for a house are $1,341 in Castle Cove (Willoughby rates (OLG) and $1,341 in Castlecrag (Willoughby rates (OLG). Water and sewerage adds $1,548 in Castle Cove and $1,548 in Castlecrag. 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 Castle Cove and Castlecrag?
Annual driving commute costs are $2,818 from Castle Cove and $2,460 from Castlecrag to Sydney CBD (ATO 91c/km). Public transport costs $1,920 from Castle Cove and $1,920 from Castlecrag.
What is the 10-year cost difference between Castle Cove and Castlecrag?
At 3% annual cost growth, Castle Cove costs a cumulative $95,230 and Castlecrag costs $85,968 over 10 years by car. The cumulative difference is $9,262 in favour of Castlecrag. Excludes purchase price, mortgage, and personal expenses.
Which of Castle Cove and Castlecrag 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: Willoughby rates (OLG and Willoughby 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.