Castlecrag vs Middle Cove: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 88c/km, Opal & Translink fares, AER electricity benchmarks
Castlecrag and Middle Cove are both Willoughby rates (OLG suburbs, sitting 7.8 km and 8.6 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Castlecrag runs $665 a year cheaper than Middle Cove, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $7,624.
Over 10 years these two cost about the same to run. The difference here isn't money — it's location, schools and lifestyle.
Get the free report: 10-year costs, flood & fire risk, crime, schools and overall verdict →Castlecrag
Middle Cove
Annual cost breakdown
| Category | Castlecrag | Middle Cove | Difference |
|---|---|---|---|
| Council rates | $1,341 | $1,341 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $2,379 | $2,594 | -$215 |
| Commute (public transport) | $1,920 | $1,920 | - |
| Home insurance | $2,150 | $2,600 | -$450 |
| Body corporate (unit) | $2,600 | $2,600 | - |
| Total (driving) | $7,418 | $8,083 | -$665 |
| Total (public transport) | $6,959 | $7,409 | -$450 |
Green = cheaper. Commute: ATO 88c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Castlecrag | Middle Cove | Difference |
|---|---|---|---|
| House | $2,148 | $2,148 | - |
| Unit | $1,716 | $1,716 | - |
Estimated from AER residential benchmarks for each suburb's climate zone at 2025 rates (QLD 30c/kWh, NSW 33c/kWh incl. supply charge; unit ≈ 75% of a house). Get the free report for a breakdown by your exact number of occupants.
Cost breakdown chart
Annual cost breakdown — Castlecrag vs Middle Cove (2026-27)
What the numbers show
Castlecrag costs $665 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $7,624 in favour of Castlecrag.
The biggest single gap is home insurance at $450 per year. Middle Cove carries medium flood risk, which pushes estimated premiums higher.
On public transport the gap is $450 per year, $6,959 from Castlecrag versus $7,409 from Middle Cove.
10-year cumulative cost projection
| Year | Castlecrag cumulative | Middle Cove cumulative | Difference |
|---|---|---|---|
| Year 1 | $7,418 | $8,083 | $665 |
| Year 3 | $22,928 | $24,984 | $2,056 |
| Year 5 | $39,383 | $42,914 | $3,531 |
| Year 10 | $85,039 | $92,663 | $7,624 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Castlecrag or Middle Cove cheaper to live in?
Castlecrag is cheaper to run by car at $7,418 per year versus $8,083 for Middle Cove, a difference of $665 annually. Figures cover council rates, water, commute (ATO 88c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Castlecrag and Middle Cove?
Annual council rates for a house are $1,341 in Castlecrag (Willoughby rates (OLG) and $1,341 in Middle Cove (Willoughby rates (OLG). Water and sewerage adds $1,548 in Castlecrag and $1,548 in Middle Cove. 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 Castlecrag and Middle Cove?
Annual driving commute costs are $2,379 from Castlecrag and $2,594 from Middle Cove to Sydney CBD (ATO 88c/km). Public transport costs $1,920 from Castlecrag and $1,920 from Middle Cove.
What is the 10-year cost difference between Castlecrag and Middle Cove?
At 3% annual cost growth, Castlecrag costs a cumulative $85,039 and Middle Cove costs $92,663 over 10 years by car. The cumulative difference is $7,624 in favour of Castlecrag. Excludes purchase price, mortgage, and personal expenses.
Which of Castlecrag and Middle Cove 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.
Related comparisons
Sources: Willoughby rates (OLG and Willoughby rates (OLG rate data, water utility pricing (QLD: Queensland Urban Utilities / Unitywater; NSW: Sydney Water / Hunter Water), ATO 88c/km, and SuburbCost AI insurance estimates. Data updated July 2026.