Cost Plus Construction Agreement Template for South Africa

A Cost Plus Construction Agreement is a specialized contract that allows you to manage construction projects where the total cost cannot be accurately predicted at the start. Unlike fixed-price contracts, this agreement reimburses the contractor for actual costs incurred plus an agreed markup or fee, providing transparency and flexibility for complex construction projects in South Africa.

When do you need this document?

You need this agreement when undertaking construction projects with uncertain scope or specifications, such as heritage building renovations where hidden structural issues may emerge. It's essential for research facilities, hospitals, or specialized industrial projects where technical requirements may evolve during construction. This contract type is also valuable for emergency repair works, prototype buildings, or projects requiring cutting-edge technology where cost estimation is challenging. Additionally, it's suitable for large-scale developments where design changes are anticipated or where the client wants maximum transparency in cost tracking and project expenditure.

Key legal considerations

The cost-plus mechanism requires detailed cost verification procedures and clear definitions of what constitutes reimbursable costs versus excluded expenses. You must establish robust project management structures including quantity surveyor oversight and regular cost reporting to prevent cost overruns. The agreement should specify the contractor's markup structure, whether as a percentage of costs or fixed fee, and include provisions for cost auditing and documentation. Risk allocation becomes critical as the employer bears greater financial risk compared to fixed-price contracts. The contract must address variation procedures, quality control measures, and dispute resolution mechanisms. Professional indemnity insurance requirements and performance guarantees need careful consideration given the open-ended cost structure.

Legal requirements in South Africa

Under the Construction Industry Development Board Act 38 of 2000, contractors must be properly registered with appropriate grading for the project value and complexity. The agreement must comply with the Occupational Health and Safety Act 85 of 1993, requiring comprehensive safety management plans and regular safety officer involvement. National Building Regulations and Building Standards Act 103 of 1977 compliance is mandatory, with all work meeting prescribed building standards and obtaining necessary approvals. The Consumer Protection Act 68 of 2008 may apply where the employer is considered a consumer, affecting cooling-off periods and disclosure requirements. The contract must address BBBEE compliance requirements and local content regulations for public sector projects. Additionally, you must ensure proper tax compliance, including VAT registration and provisional tax obligations for the cost-plus payment structure.