Couridjah vs Thirlmere, true annual running costs compared 2026
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Couridjah and Thirlmere are both Wollondilly rates (OLG suburbs, sitting 72.8 km and 70.2 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
The two sit within $236 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 the gap between these two is about $2,700, about $5 a week, and most of it is the AI-estimated insurance line.
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Thirlmere
Annual cost breakdown
| Category | Couridjah | Thirlmere | Difference |
|---|---|---|---|
| Council rates Official, 2026-27 | $2,195 | $2,195 | - |
| Water & sewerage Official, 2026-27 | $1,548 | $1,548 | - |
| Commute (driving) Modelled, 2026-27 | $3,180 | $3,066 | +$114 |
| Commute (public transport) Modelled, 2026-27 | $2,400 | $2,400 | - |
| Home insurance Estimated | $1,700 | $2,050 | -$350 |
| Body corporate (unit) Estimated | $1,800 | $1,800 | - |
| Total (driving) | $8,623 | $8,859 | -$236 |
| Total (public transport) | $7,843 | $8,193 | -$350 |
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 | Couridjah | Thirlmere | Difference |
|---|---|---|---|
| House | $2,720 | $2,720 | - |
| Unit | $2,209 | $2,209 | - |
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, Couridjah vs Thirlmere (2026-27)
What the numbers show
Couridjah and Thirlmere differ by $236 a year by car, but $350 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 $114, so neither suburb is named cheaper here.
The biggest single gap is home insurance at $350 per year.
On public transport the gap is $350 per year, $7,843 from Couridjah versus $8,193 from Thirlmere.
Where the difference actually comes from
- Council rates is identical at $2,195 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Thirlmere by $114 a year, $3,066 against $3,180.
- Building insurance favours Couridjah by $350 a year, $1,700 against $2,050.
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 high in Thirlmere against medium in Couridjah, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Couridjah cumulative | Thirlmere cumulative | Difference |
|---|---|---|---|
| Year 1 | $8,623 | $8,859 | $236 |
| Year 3 | $26,653 | $27,382 | $729 |
| Year 5 | $45,781 | $47,034 | $1,253 |
| Year 10 | $98,853 | $101,559 | $2,706 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Couridjah or Thirlmere cheaper to live in?
Neither is named cheaper. Couridjah runs $8,623 a year by car and Thirlmere $8,859, but most of the $236 difference is the building insurance estimate rather than a published figure. On council rates, water and the commute, which are sourced, the gap is $114. Source: SuburbCost 2026 data.
What are council rates in Couridjah and Thirlmere?
Annual council rates for a house are $2,195 in Couridjah (Wollondilly rates (OLG) and $2,195 in Thirlmere (Wollondilly rates (OLG). Water and sewerage adds $1,548 in Couridjah and $1,548 in Thirlmere. 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 Couridjah and Thirlmere?
Annual driving commute costs are $3,180 from Couridjah and $3,066 from Thirlmere to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Couridjah and $2,400 from Thirlmere.
What is the 10-year cost difference between Couridjah and Thirlmere?
At 3% annual cost growth, Couridjah costs a cumulative $98,853 and Thirlmere costs $101,559 over 10 years by car. The cumulative difference is $2,706 in favour of Couridjah. Excludes purchase price, mortgage, and personal expenses.
Which of Couridjah and Thirlmere suits you better?
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Sources: Wollondilly rates (OLG and Wollondilly 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.