Owner control of house building allows a variety of cost-reducing measures to be introduced, such as a smaller house, cheaper materials, fixtures and finishes, and staged construction. However owner-building offers the greatest cost reduction potential. This potential may be reduced by the owner-builder's materials and labour prices, any income forgone, and an extended building time. The cost implications of purchasing a speculative house, a project house and owner-buildinq are calculated, showing that owner-building has real advantages by reducing the loan amount, the repayment level, and the total interest paid.
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