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 $447 a year cheaper than Cherrybrook, driven mostly by the commute. Over 10 years at 3% growth that gap compounds to about $5,125.
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 →Cherrybrook
Thornleigh
Annual cost breakdown
| Category | Cherrybrook | Thornleigh | Difference |
|---|---|---|---|
| Council rates | $1,541 | $1,541 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $5,636 | $5,189 | +$447 |
| Commute (public transport) | $2,400 | $2,386 | +$14 |
| Home insurance | $2,150 | $2,150 | - |
| Body corporate (unit) | $2,300 | $2,300 | - |
| Total (driving) | $10,875 | $10,428 | +$447 |
| Total (public transport) | $7,639 | $7,625 | +$14 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; 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
Thornleigh costs $447 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $5,125 in favour of Thornleigh.
The biggest single gap is commute costs at $447 per year. Cherrybrook is 22.4 km from Sydney CBD, which drives higher annual driving costs at the ATO rate of 91c/km.
On public transport the two suburbs cost almost the same, $7,639 and $7,625 a year, so the $447 driving gap nearly closes if you commute by public transport.
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 is identical at $2,150 a year.
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.
10-year cumulative cost projection
| Year | Cherrybrook cumulative | Thornleigh cumulative | Difference |
|---|---|---|---|
| Year 1 | $10,875 | $10,428 | $447 |
| Year 3 | $33,614 | $32,232 | $1,382 |
| Year 5 | $57,737 | $55,364 | $2,373 |
| Year 10 | $124,670 | $119,545 | $5,125 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Cherrybrook or Thornleigh cheaper to live in?
Thornleigh is cheaper to run by car at $10,428 per year versus $10,875 for Cherrybrook, a difference of $447 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. 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 $119,545 over 10 years by car. The cumulative difference is $5,125 in favour of Thornleigh. Excludes purchase price, mortgage, and personal expenses.
Which of Cherrybrook and Thornleigh 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: 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 AI insurance estimates. Data updated July 2026.