Baulkham Hills vs Castle Hill: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Baulkham Hills and Castle Hill are both The Hills rates (OLG suburbs, sitting 24.6 km and 24.9 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
The two sit within $40 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 →Baulkham Hills
Castle Hill
Annual cost breakdown
| Category | Baulkham Hills | Castle Hill | Difference |
|---|---|---|---|
| Council rates | $1,261 | $1,261 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $5,953 | $5,993 | -$40 |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $1,850 | $1,850 | - |
| Body corporate (unit) | $2,300 | $2,300 | - |
| Total (driving) | $10,612 | $10,652 | -$40 |
| Total (public transport) | $7,059 | $7,059 | - |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Baulkham Hills | Castle Hill | 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 — Baulkham Hills vs Castle Hill (2026-27)
What the numbers show
Baulkham Hills and Castle Hill cost within $40 of each other annually by car. Over ten years with 3% annual growth the gap reaches roughly $458, making running cost a minor factor in the decision.
The biggest single gap is commute costs at $40 per year. Castle Hill is 24.9 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, $7,059 and $7,059 a year, so the $40 driving gap nearly closes if you commute by public transport.
Where the difference actually comes from
- Council rates is identical at $1,261 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Baulkham Hills by $40 a year, $5,953 against $5,993.
- Building insurance is identical at $1,850 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 | Baulkham Hills cumulative | Castle Hill cumulative | Difference |
|---|---|---|---|
| Year 1 | $10,612 | $10,652 | $40 |
| Year 3 | $32,801 | $32,924 | $123 |
| Year 5 | $56,341 | $56,553 | $212 |
| Year 10 | $121,655 | $122,113 | $458 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Baulkham Hills or Castle Hill cheaper to live in?
Baulkham Hills is cheaper to run by car at $10,612 per year versus $10,652 for Castle Hill, a difference of $40 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Baulkham Hills and Castle Hill?
Annual council rates for a house are $1,261 in Baulkham Hills (The Hills rates (OLG) and $1,261 in Castle Hill (The Hills rates (OLG). Water and sewerage adds $1,548 in Baulkham Hills and $1,548 in Castle Hill. 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 Baulkham Hills and Castle Hill?
Annual driving commute costs are $5,953 from Baulkham Hills and $5,993 from Castle Hill to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Baulkham Hills and $2,400 from Castle Hill.
What is the 10-year cost difference between Baulkham Hills and Castle Hill?
At 3% annual cost growth, Baulkham Hills costs a cumulative $121,655 and Castle Hill costs $122,113 over 10 years by car. The cumulative difference is $458 in favour of Baulkham Hills. Excludes purchase price, mortgage, and personal expenses.
Which of Baulkham Hills and Castle Hill 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: The Hills rates (OLG and The Hills 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.