Infrastructure charges on the Sunshine Coast: the cost developers underestimate

If you have ever modelled a development project on the Sunshine Coast and been surprised by the final cost summary, there is a good chance infrastructure charges were the culprit. They are one of the most consistently underestimated line items in early-stage feasibility, and on a multi-dwelling project, they can represent a significant chunk of your total project cost.

Infrastructure charges (sometimes called infrastructure contributions or development charges) are levied by Sunshine Coast Council to fund the roads, water, sewerage, stormwater, and community infrastructure required to service new development. They are calculated on a per-dwelling or per-lot basis, and the rates are set by the council's adopted charges resolution.

What the numbers actually look like

On the Sunshine Coast in 2026, infrastructure charges for a new dwelling typically range from $28,000 to $35,000, depending on the specific location and the type of development. The charge comprises several components: transport network, water supply, sewerage, stormwater, and parks and community facilities.

On a six-unit townhouse project, that translates to $168,000 to $210,000. On a twelve-unit apartment project, $336,000 to $420,000. These are not trivial sums. They are payable before construction begins (typically at the time of DA approval or prior to building approval), which means they hit your cash flow at a point when you have already spent significantly on land, design, and approvals.

The charges are not negotiable in most cases. Council applies the adopted charges resolution consistently. The only offsets available are for existing lawful uses on the site (if you are demolishing an existing house to build townhouses, you receive a credit for the one dwelling). This credit reduces the charges, but only by one dwelling's worth.

Why they get underestimated

The most common reason infrastructure charges are underestimated is that developers use outdated figures or generic estimates from other council areas. Each council in Queensland sets its own charges, and the Sunshine Coast charges are higher than many people expect, particularly compared to some Brisbane-area councils.

Another issue is that some feasibility models simply omit infrastructure charges entirely, or bundle them into a general "council costs" line item that is set too low. We regularly see preliminary feasibility models that allocate $10,000 to $15,000 per dwelling for "council costs" when the actual infrastructure charges alone exceed that figure before you add DA lodgement fees, planning certificates, and other statutory costs.

How they affect project viability

On a townhouse project where the target development margin is 20%, infrastructure charges can represent the difference between a viable project and a marginal one. Consider a project with a $3.5 million total development cost and an expected revenue of $4.2 million. The gross margin is $700,000, or 20%.

Now add $50,000 in underestimated infrastructure charges (the difference between a rough estimate and the actual figure). That margin drops to $650,000, or 18.6%. On a project with a two-year timeline, that 1.4% margin compression translates directly to reduced return on capital. And infrastructure charges are just one of several costs that tend to be underestimated in early-stage analysis.

This is why we quantify infrastructure charges precisely in every feasibility assessment we produce. We cross-reference the adopted charges resolution against the proposed development to calculate the exact charge payable, including any credits for existing uses. No estimates. No round numbers. The actual figure your project will need to budget for.

How to account for them properly

If you are modelling a development on the Sunshine Coast, the adopted charges resolution is publicly available on the council's website. Look up the specific charges for your development type and location. Do not use generic figures or averages from other council areas.

Factor the charges into your cash flow model at the point they are payable (typically pre-construction), not as a general project cost spread across the timeline. This matters for your funding structure and interest cost calculations.

And remember that infrastructure charges are just one component of the statutory cost envelope. DA lodgement fees, planning and compliance certificates, engineering certifications, and operational works approvals all add to the pre-construction cost base. A thorough feasibility analysis accounts for all of these.