Avondale vs Marshall Mount: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Avondale and Marshall Mount are both Wollongong rates (OLG suburbs, sitting 83.2 km and 86.9 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Avondale runs $612 a year cheaper than Marshall Mount, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $7,016.
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 →Avondale
Marshall Mount
Annual cost breakdown
| Category | Avondale | Marshall Mount | Difference |
|---|---|---|---|
| Council rates | $1,819 | $1,819 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $3,634 | $3,796 | -$162 |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $2,000 | $2,450 | -$450 |
| Body corporate (unit) | $1,800 | $1,800 | - |
| Total (driving) | $9,001 | $9,613 | -$612 |
| Total (public transport) | $7,767 | $8,217 | -$450 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Avondale | Marshall Mount | Difference |
|---|---|---|---|
| House | $2,442 | $2,442 | - |
| Unit | $2,001 | $2,001 | - |
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 — Avondale vs Marshall Mount (2026-27)
What the numbers show
Avondale costs $612 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $7,016 in favour of Avondale.
The biggest single gap is home insurance at $450 per year. Marshall Mount carries medium flood risk, which pushes estimated premiums higher.
On public transport the gap is $450 per year, $7,767 from Avondale versus $8,217 from Marshall Mount.
Where the difference actually comes from
- Council rates is identical at $1,819 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Avondale by $162 a year, $3,634 against $3,796.
- Building insurance favours Avondale by $450 a year, $2,000 against $2,450.
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.
Flood risk is rated medium in Marshall Mount against low in Avondale, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Avondale cumulative | Marshall Mount cumulative | Difference |
|---|---|---|---|
| Year 1 | $9,001 | $9,613 | $612 |
| Year 3 | $27,821 | $29,713 | $1,892 |
| Year 5 | $47,788 | $51,037 | $3,249 |
| Year 10 | $103,186 | $110,202 | $7,016 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Avondale or Marshall Mount cheaper to live in?
Avondale is cheaper to run by car at $9,001 per year versus $9,613 for Marshall Mount, a difference of $612 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Avondale and Marshall Mount?
Annual council rates for a house are $1,819 in Avondale (Wollongong rates (OLG) and $1,819 in Marshall Mount (Wollongong rates (OLG). Water and sewerage adds $1,548 in Avondale and $1,548 in Marshall Mount. 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 Avondale and Marshall Mount?
Annual driving commute costs are $3,634 from Avondale and $3,796 from Marshall Mount to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Avondale and $2,400 from Marshall Mount.
What is the 10-year cost difference between Avondale and Marshall Mount?
At 3% annual cost growth, Avondale costs a cumulative $103,186 and Marshall Mount costs $110,202 over 10 years by car. The cumulative difference is $7,016 in favour of Avondale. Excludes purchase price, mortgage, and personal expenses.
Which of Avondale and Marshall Mount 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: Wollongong rates (OLG and Wollongong 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.