Blackwall vs St Huberts Island: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Blackwall and St Huberts Island are both Central Coast rates (OLG suburbs, sitting 42 km and 43.6 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
St Huberts Island runs $339 a year cheaper than Blackwall, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $3,886.
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 →Blackwall
St Huberts Island
Annual cost breakdown
| Category | Blackwall | St Huberts Island | Difference |
|---|---|---|---|
| Council rates | $1,454 | $1,454 | - |
| Water & sewerage | $1,300 | $1,300 | - |
| Commute (driving) | $6,972 | $6,933 | +$39 |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $3,250 | $2,950 | +$300 |
| Body corporate (unit) | $2,100 | $2,100 | - |
| Total (driving) | $12,976 | $12,637 | +$339 |
| Total (public transport) | $8,404 | $8,104 | +$300 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Blackwall | St Huberts Island | 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 — Blackwall vs St Huberts Island (2026-27)
What the numbers show
St Huberts Island costs $339 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $3,886 in favour of St Huberts Island.
The biggest single gap is home insurance at $300 per year. Blackwall carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $300 per year, $8,404 from Blackwall versus $8,104 from St Huberts Island.
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 favours St Huberts Island by $39 a year, $6,933 against $6,972.
- Building insurance favours St Huberts Island by $300 a year, $2,950 against $3,250.
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.
Fire risk is rated medium in Blackwall against low in St Huberts Island, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Blackwall cumulative | St Huberts Island cumulative | Difference |
|---|---|---|---|
| Year 1 | $12,976 | $12,637 | $339 |
| Year 3 | $40,108 | $39,060 | $1,048 |
| Year 5 | $68,891 | $67,092 | $1,799 |
| Year 10 | $148,755 | $144,869 | $3,886 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Blackwall or St Huberts Island cheaper to live in?
St Huberts Island is cheaper to run by car at $12,637 per year versus $12,976 for Blackwall, a difference of $339 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Blackwall and St Huberts Island?
Annual council rates for a house are $1,454 in Blackwall (Central Coast rates (OLG) and $1,454 in St Huberts Island (Central Coast rates (OLG). Water and sewerage adds $1,300 in Blackwall and $1,300 in St Huberts Island. 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 Blackwall and St Huberts Island?
Annual driving commute costs are $6,972 from Blackwall and $6,933 from St Huberts Island to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Blackwall and $2,400 from St Huberts Island.
What is the 10-year cost difference between Blackwall and St Huberts Island?
At 3% annual cost growth, Blackwall costs a cumulative $148,755 and St Huberts Island costs $144,869 over 10 years by car. The cumulative difference is $3,886 in favour of St Huberts Island. Excludes purchase price, mortgage, and personal expenses.
Which of Blackwall and St Huberts Island 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: 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 AI insurance estimates. Data updated July 2026.