Marley vs Wattamolla: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Marley and Wattamolla are both Sutherland rates (OLG suburbs, sitting 28.7 km and 31.8 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Wattamolla runs $836 a year cheaper than Marley, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $9,584.
Over 10 years, Wattamolla costs about $9,600 less to run than Marley — the same as paying $9,600 less for the home. It's the cost no listing shows you.
Get the free report: 10-year costs, flood & fire risk, crime, schools and overall verdict →Marley
Wattamolla
Annual cost breakdown
| Category | Marley | Wattamolla | Difference |
|---|---|---|---|
| Council rates | $1,617 | $1,617 | - |
| Water & sewerage | $1,548 | $1,548 | - |
| Commute (driving) | $6,431 | $6,695 | -$264 |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $3,650 | $2,550 | +$1,100 |
| Body corporate (unit) | $2,100 | $2,100 | - |
| Total (driving) | $13,246 | $12,410 | +$836 |
| Total (public transport) | $9,215 | $8,115 | +$1,100 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Marley | Wattamolla | 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 — Marley vs Wattamolla (2026-27)
What the numbers show
Wattamolla costs $836 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $9,584 in favour of Wattamolla.
The biggest single gap is home insurance at $1,100 per year. Marley carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $1,100 per year, $9,215 from Marley versus $8,115 from Wattamolla.
Where the difference actually comes from
- Council rates is identical at $1,617 a year.
- Water and sewerage is identical at $1,548 a year.
- Driving commute favours Marley by $264 a year, $6,431 against $6,695.
- Building insurance favours Wattamolla by $1,100 a year, $2,550 against $3,650.
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 high in Marley against low in Wattamolla, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Marley cumulative | Wattamolla cumulative | Difference |
|---|---|---|---|
| Year 1 | $13,246 | $12,410 | $836 |
| Year 3 | $40,942 | $38,358 | $2,584 |
| Year 5 | $70,325 | $65,886 | $4,439 |
| Year 10 | $151,851 | $142,267 | $9,584 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Marley or Wattamolla cheaper to live in?
Wattamolla is cheaper to run by car at $12,410 per year versus $13,246 for Marley, a difference of $836 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Marley and Wattamolla?
Annual council rates for a house are $1,617 in Marley (Sutherland rates (OLG) and $1,617 in Wattamolla (Sutherland rates (OLG). Water and sewerage adds $1,548 in Marley and $1,548 in Wattamolla. 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 Marley and Wattamolla?
Annual driving commute costs are $6,431 from Marley and $6,695 from Wattamolla to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Marley and $2,400 from Wattamolla.
What is the 10-year cost difference between Marley and Wattamolla?
At 3% annual cost growth, Marley costs a cumulative $151,851 and Wattamolla costs $142,267 over 10 years by car. The cumulative difference is $9,584 in favour of Wattamolla. Excludes purchase price, mortgage, and personal expenses.
Which of Marley and Wattamolla 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: Sutherland rates (OLG and Sutherland 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.