Looks at the role of private sector, DETR-approved building inspectors and the benefits of the services they can offer property developers. Originally, local authorities had sole responsibility for building control. However, since 1977 several companies have been awarded Corporate Approval Inspector (CAI) status for commercial projects. In order to compete with the public sector, private sector inspectors offer competitive rates and greater efficiency. Approved inspectors give advice on all forms of property legislation which may affect each stage of the development process. They smooth the route to compliance with Building Regulations for developers. Among the additional services they can offer are fire authority consultation, and negotiation with local authorities or licensing bodies. Considers a hypothetical case study, which illustrates the work of the CAI team, includes an example of a CAI progress chart, and looks at planned changes to legislation that may affect building control.