Cherrybrook vs Thornleigh, true annual running costs compared 2026
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Cherrybrook and Thornleigh are both Hornsby rates (OLG suburbs, sitting 22.4 km and 19.7 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Thornleigh runs $1,047 a year cheaper than Cherrybrook, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $12,003.
Over 10 years the gap between these two is about $12,000, about $23 a week, and most of it is the AI-estimated insurance line.
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Thornleigh
Annual cost breakdown
| Category | Cherrybrook | Thornleigh | Difference |
|---|---|---|---|
| Council rates Official, 2026-27 | $1,541 | $1,541 | - |
| Water & sewerage Official, 2026-27 | $1,548 | $1,548 | - |
| Commute (driving) Modelled, 2026-27 | $5,636 | $5,189 | +$447 |
| Commute (public transport) Modelled, 2026-27 | $2,400 | $2,386 | +$14 |
| Home insurance Estimated | $2,150 | $1,550 | +$600 |
| Body corporate (unit) Estimated | $2,300 | $2,300 | - |
| Total (driving) | $10,875 | $9,828 | +$1,047 |
| Total (public transport) | $7,639 | $7,025 | +$614 |
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 | Cherrybrook | Thornleigh | 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, Cherrybrook vs Thornleigh (2026-27)
What the numbers show
Cherrybrook and Thornleigh differ by $1,047 a year by car, but $600 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 $447, so neither suburb is named cheaper here.
The biggest single gap is home insurance at $600 per year.
On public transport the gap is $614 per year, $7,639 from Cherrybrook versus $7,025 from Thornleigh.
Where the difference actually comes from
- Council rates is identical at $1,541 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Thornleigh by $447 a year, $5,189 against $5,636.
- Building insurance favours Thornleigh by $600 a year, $1,550 against $2,150.
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.
10-year cumulative cost projection
| Year | Cherrybrook cumulative | Thornleigh cumulative | Difference |
|---|---|---|---|
| Year 1 | $10,875 | $9,828 | $1,047 |
| Year 3 | $33,614 | $30,377 | $3,237 |
| Year 5 | $57,737 | $52,178 | $5,559 |
| Year 10 | $124,670 | $112,667 | $12,003 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Cherrybrook or Thornleigh cheaper to live in?
Neither is named cheaper. Cherrybrook runs $10,875 a year by car and Thornleigh $9,828, but most of the $1,047 difference is the building insurance estimate rather than a published figure. On council rates, water and the commute, which are sourced, the gap is $447. Source: SuburbCost 2026 data.
What are council rates in Cherrybrook and Thornleigh?
Annual council rates for a house are $1,541 in Cherrybrook (Hornsby rates (OLG) and $1,541 in Thornleigh (Hornsby rates (OLG). Water and sewerage adds $1,548 in Cherrybrook and $1,548 in Thornleigh. 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 Cherrybrook and Thornleigh?
Annual driving commute costs are $5,636 from Cherrybrook and $5,189 from Thornleigh to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Cherrybrook and $2,386 from Thornleigh.
What is the 10-year cost difference between Cherrybrook and Thornleigh?
At 3% annual cost growth, Cherrybrook costs a cumulative $124,670 and Thornleigh costs $112,667 over 10 years by car. The cumulative difference is $12,003 in favour of Thornleigh. Excludes purchase price, mortgage, and personal expenses.
Which of Cherrybrook and Thornleigh suits you better?
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Sources: Hornsby rates (OLG and Hornsby 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.