Colongra vs Lake Munmorah: true annual running costs compared (2026)
Last updated July 2026 · council rates current NSW schedules, ATO 91c/km, Opal & Translink fares, AER electricity benchmarks
Colongra and Lake Munmorah are both Central Coast rates (OLG suburbs, sitting 80.4 km and 82.1 km from Sydney CBD respectively, and are commonly compared by buyers weighing up running costs within the same council area.
Lake Munmorah runs $326 a year cheaper than Colongra, driven mostly by home insurance. Over 10 years at 3% growth that gap compounds to about $3,737.
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 →Colongra
Lake Munmorah
Annual cost breakdown
| Category | Colongra | Lake Munmorah | Difference |
|---|---|---|---|
| Council rates | $1,454 | $1,454 | - |
| Water & sewerage | $1,300 | $1,300 | - |
| Commute (driving) | $3,512 | $3,586 | -$74 |
| Commute (public transport) | $2,400 | $2,400 | - |
| Home insurance | $3,500 | $3,100 | +$400 |
| Body corporate (unit) | $1,800 | $1,800 | - |
| Total (driving) | $9,766 | $9,440 | +$326 |
| Total (public transport) | $8,654 | $8,254 | +$400 |
Green = cheaper. Commute: ATO 91c/km, 220 working days. Insurance AI-estimated; actual premiums vary. Council rates: average residential rate (NSW, IPART-uplifted).
| Dwelling | Colongra | Lake Munmorah | 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 — Colongra vs Lake Munmorah (2026-27)
What the numbers show
Lake Munmorah costs $326 less per year to run by car. Held over ten years at 3% annual cost growth, that gap compounds to $3,737 in favour of Lake Munmorah.
The biggest single gap is home insurance at $400 per year. Colongra carries high flood risk, which pushes estimated premiums higher.
On public transport the gap is $400 per year, $8,654 from Colongra versus $8,254 from Lake Munmorah.
Where the difference actually comes from
- Council rates is identical at $1,454 a year.
- Water and sewerage is identical at $1,300 a year.
- Driving commute favours Colongra by $74 a year, $3,512 against $3,586.
- Building insurance favours Lake Munmorah by $400 a year, $3,100 against $3,500.
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.
Fire risk is rated high in Colongra against medium in Lake Munmorah, which feeds the insurance estimate.
10-year cumulative cost projection
| Year | Colongra cumulative | Lake Munmorah cumulative | Difference |
|---|---|---|---|
| Year 1 | $9,766 | $9,440 | $326 |
| Year 3 | $30,186 | $29,178 | $1,008 |
| Year 5 | $51,849 | $50,118 | $1,731 |
| Year 10 | $111,956 | $108,219 | $3,737 |
Assumes 3% annual cost growth. Excludes purchase price, mortgage, and personal expenses.
Frequently asked questions
Is Colongra or Lake Munmorah cheaper to live in?
Lake Munmorah is cheaper to run by car at $9,440 per year versus $9,766 for Colongra, a difference of $326 annually. Figures cover council rates, water, commute (ATO 91c/km), and home insurance. Source: SuburbCost 2026 data.
What are council rates in Colongra and Lake Munmorah?
Annual council rates for a house are $1,454 in Colongra (Central Coast rates (OLG) and $1,454 in Lake Munmorah (Central Coast rates (OLG). Water and sewerage adds $1,300 in Colongra and $1,300 in Lake Munmorah. 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 Colongra and Lake Munmorah?
Annual driving commute costs are $3,512 from Colongra and $3,586 from Lake Munmorah to Sydney CBD (ATO 91c/km). Public transport costs $2,400 from Colongra and $2,400 from Lake Munmorah.
What is the 10-year cost difference between Colongra and Lake Munmorah?
At 3% annual cost growth, Colongra costs a cumulative $111,956 and Lake Munmorah costs $108,219 over 10 years by car. The cumulative difference is $3,737 in favour of Lake Munmorah. Excludes purchase price, mortgage, and personal expenses.
Which of Colongra and Lake Munmorah 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: Central Coast rates (OLG and Central Coast 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.