COLA cost and budget
How much does a school COLA cost in Australia?
A school COLA in Australia typically costs $150 to $250 per square metre for a shade-only (permeable) structure, $450 to $750 per square metre for a waterproof covered area, and $500,000 to $1.2 million or more for a large clear-span sports court over 400 square metres. Actual cost depends on span width, roof material, site access, soil conditions, and the level of fit-out.
For context, a small covered area under 200 square metres typically ranges from $80,000 to $150,000, while a mid-size multi-purpose space of 200 to 400 square metres falls between $250,000 and $500,000. Clear-span engineering (no internal columns) costs significantly more than the same area with columns at regular intervals, because the steel members must be heavier to bridge the gap. PVC fabric membrane sits in the middle of the metal price range when compared on equivalent outcomes: once bird-proofing, acoustic treatment, electrical lighting, and insulation are added to a steel COLA, the total is comparable. The cheapest option per square metre often isn't the cheapest option over 20 years. Shade-only structures suit different use cases than fully timetabled spaces, and steel structures deliver their full value when acoustic treatment and lighting are specified upfront where assemblies, PE, and evening use are planned. Schools preparing a budget for board approval should use Greenline's Project Estimate Tool to generate a ballpark figure before committing to a specific design path.
What drives COLA pricing up or down?
The biggest cost drivers for a school COLA are span width and clear-span engineering, roof material and weatherproofing level, site access and soil conditions, design complexity, and the scope of fit-out inclusions. Moving from a columned structure to a clear span, or from shade-only to waterproof, each represent a step-change in price.
Span and clearance height affect structural loading calculations directly: a 30-metre clear span needs heavier steel members than the same width supported by mid-span columns, and sport-grade ceiling heights (8.3 metres minimum for netball) add to wind loading. Roof material choice matters at scale; steel Colorbond is cheaper for small structures, and fabric membrane becomes more cost-effective per square metre as the span increases because it requires fewer structural members to achieve the same coverage. Gable roof profiles are the most efficient layout, and curved barrel vaults and custom shapes add fabrication cost. Site access on a live school campus, especially between buildings or along narrow pathways, increases construction logistics costs. Soil conditions that require deeper or more complex footings push the price up, particularly when rock, clay, or a high water table is present. Add-ons that increase cost include skylights, end infills, bird-proofing mesh, acoustic soffit lining, artificial lighting, PA systems, retractable basketball hoops, tiered seating, and side skirts for driving rain protection. Coastal locations require hot-dip galvanising or additional coatings to resist salt corrosion. Schools in bushfire zones may be required to use metal roofing, which is where steel fits best over fabric membrane.
What hidden costs should schools watch for in COLA quotes?
The most common hidden costs in school COLA quotes are footings, site works, services connections (power, lighting, drainage), council approvals, project management fees, and items like acoustic treatment and bird-proofing that are left off the base price. Footings are the single most frequent source of cost variation in COLA projects, because many quotes exclude them entirely or price them as provisional sums that change once ground conditions are known.
When footings are listed as provisional or excluded, the approved budget reflects an incomplete number. Once excavation begins and actual soil conditions are assessed, a variation claim typically follows. Underground utility lines discovered during excavation can create the same situation. Beyond footings, common cost items that get left out of initial quotes include electrical lighting, PA and AV provisions, acoustic treatment (critical if the space will host assemblies), bird-proofing (required for some state government compliance), and gutter guards and downpipe protection (mandatory for NSW government-funded projects). The traditional procurement path of architect, then engineer, then builder adds a margin layer at each handoff, so the total cost exceeds what any single party quoted. Greenline's approach is to include everything in what we call a "build-ready budget with no variation guarantee," which means footings, site works, services, approvals, and project management are priced upfront after a site investigation. Schools evaluating competing quotes should ask every builder the same question: what is excluded from this number?
What grants are available for school COLA projects in Australia?
Grant funding for school COLA projects in Australia comes from three main sources: Australian Government programs, state and territory government programs, and non-government school authority funds. The specific grants available depend on the state, school sector (government, Catholic, or independent), and whether the project serves a sporting, educational, or community purpose.
In Queensland, the School Subsidy Scheme is an ongoing program available to all state school communities, assisting with the cost of school-managed facility projects. In NSW, the Capital Grants Program administered by the Association of Independent Schools of NSW (AISNSW) supports capital works at independent schools in economically disadvantaged areas, and the Community Building Partnerships Program provides grants of $10,000 to $100,000 for community infrastructure projects including education, with a total 2025 pool of $41.85 million. In Victoria, the combined "Building for Non-Government Schools" stream allocates $450 million to build or upgrade low-fee Catholic and independent schools. Sport-specific grants also apply when the COLA covers a court: Tennis NSW's Facility Enhancement Fund offers up to $80,000, and the Australian Cricket Infrastructure Fund supports clubs, associations, schools, and councils. Greenline maintains a grant resources directory organised by state and school type, and offers consultation on identifying suitable funding pathways as part of project planning.
