Erskine Park vs St Clair: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 88c/km, Opal & Translink fares, AER electricity benchmarks
Erskine Park and St Clair are both Penrith rates (OLG suburbs, sitting 37.3 km and 40 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
The two sit within $270 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 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 →Erskine Park
St Clair
Annual cost breakdown
| Category | Erskine Park | St Clair | Difference |
|---|---|---|---|
| Council rates | $1,604 | $1,604 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $6,728 | $6,758 | -$30 |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $2,150 | $1,850 | +$300 |
| Body corporate (unit) | $2,100 | $2,100 | - |
| Total (driving) | $12,030 | $11,760 | +$270 |
| Total (public transport) | $7,702 | $7,402 | +$300 |
Green = cheaper. Commute: ATO 88c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Erskine Park | St Clair | Difference |
|---|---|---|---|
| House | $2,420 | $2,420 | - |
| Unit | $1,920 | $1,920 | - |
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 — Erskine Park vs St Clair (2026-27)
What the numbers show
Erskine Park and St Clair cost within $270 of each other annually by car. Over ten years with 3% annual growth the gap reaches roughly $3,095, making running cost a minor factor in the decision.
The biggest single gap is home insurance at $300 per year.
On public transport the gap is $300 per year, $7,702 from Erskine Park versus $7,402 from St Clair.
10-year cumulative cost projection
| Year | Erskine Park cumulative | St Clair cumulative | Difference |
|---|---|---|---|
| Year 1 | $12,030 | $11,760 | $270 |
| Year 3 | $37,184 | $36,349 | $835 |
| Year 5 | $63,869 | $62,435 | $1,434 |
| Year 10 | $137,910 | $134,815 | $3,095 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Erskine Park or St Clair cheaper to live in?
St Clair is cheaper to run by car at $11,760 per year versus $12,030 for Erskine Park, a difference of $270 annually. Figures cover council rates, water, commute (ATO 88c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Erskine Park and St Clair?
Annual council rates for a house are $1,604 in Erskine Park (Penrith rates (OLG) and $1,604 in St Clair (Penrith rates (OLG). Water and sewerage adds $1,548 in Erskine Park and $1,548 in St Clair. 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 Erskine Park and St Clair?
Annual driving commute costs are $6,728 from Erskine Park and $6,758 from St Clair to Sydney CBD (ATO 88c/km). Public transport costs $2,400 from Erskine Park and $2,400 from St Clair.
What is the 10-year cost difference between Erskine Park and St Clair?
At 3% annual cost growth, Erskine Park costs a cumulative $137,910 and St Clair costs $134,815 over 10 years by car. The cumulative difference is $3,095 in favour of St Clair. Excludes purchase price, mortgage, and personal expenses.
Which of Erskine Park and St Clair 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: Penrith rates (OLG and Penrith 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.