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In wholesale house and land construction, particularly for fixed-price turnkey packages, builders must account for all expenses since prices are locked in while construction may be delayed months.

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Key Cost Categories

Hard Construction Costs comprise the largest expense (55-65% of build cost), including site preparation, structural elements, roofing, cladding, plumbing, electrical work, interior finishes, cabinetry, appliances, fixtures, and air conditioning systems. Turnkey Inclusions (8-12% of costs) make homes rent-ready, encompassing landscaping, fencing, driveways, NBN connections, TV antennas, and window coverings. Soft Costs and Overheads (8-10% of expenses) cover engineering, council approvals, construction insurance, site supervision, travel, and quality assurance activities. External Subcontractor Costs require careful budgeting across concrete work, brickwork, roofing, electrical, plumbing, tiling, painting, and carpentry trades. Sales and Compliance Costs include channel partner commissions, legal fees, and marketing materials. Contingency buffers of 3-5% protect against soil issues, material inflation, weather delays, and unforeseen circumstances. Builders must strategically account for all these elements to maintain margins when prices remain fixed throughout extended pre-construction periods.