Following on from the first stage, the client develops the preliminary business case into a full business case and project execution plan. If satisfied, the client approves the business case and project execution plan and gives instructions to proceed to the next stage as the team carries out a viability study to ensure the project is completed on budget and on time.

If the risk to the project of not receiving planning permission is high, or delays may occur, it is possible to make an outline planning application during this stage.

The key document, upon which the design will be based, is the project brief. This stage of the model is solely focused on the preparation of the project brief.

Through discussions between the team and the client, the required contents of the project brief are collected to prepare a draft ready for amends and revisions. Once the final document is approved by the client, the project brief is issued to user panels, champions and other stakeholders who may have further involvement in the development of the project.

The first step of the design stage is concerned with preparing a concept design for the preferred option. The lead designer presents the initial concept design ideas to the client, who considers whether the ideas represent good design quality and adds comments to develop the concept design. It is suggested the construction manager is appointed on completion of the concept design.

After revisions to the concept design, step two of the design process involves the development of the detailed design and technical design for the project. A design review is undertaken for the detailed design and outline specifications taking on comments, the final detailed design is then presented to the client and approval is requested to begin the technical design.

This stage focuses on preparing information that trade contractors will need to construct the project and includes the completion of applications for statutory approvals.

Selected and appointed by the client, the tendering involves a number of trade contractors who will be managed by the construction manager, appointed in the last stage. This process may need to be repeated during the project, as trade contracts may not all be tendered at the same stage.

After the trade contractors have been appointed by the client, the mobilisation stage is carried out. The mobilisation stage is preparatory referring to the activities before the trade contractors commence work on site.

This stage involves a discussion on the procedures that will be adopted during the construction stage.

As expected, this stage consists of taking possession of the site and carrying out construction works.

Through this process, individual certificates of practical completion are issued to each trade contract on completion. Once all trade contracts are completed, a certificate of project completion is issued.

A construction stage report is prepared and submitted to the client for assessment and further instructions are given if necessary.

After construction has been completed and the client has taken possession of the development for occupation, trade contractors rectify any defects that emerge before a final certificate is issued signifying that the construction works have been fully completed. Close co-operation with the client is required in this stage if the development is occupied in this allotted time.

The final stage of the model is evaluating how successful the project delivery was, how successful the completed development is, where there is potential for improvement, and what can be learned for future projects.

Ideally, the client should commit to carrying out a project evaluation at the beginning of the project to include a requirement to test whether objectives were achieved in appointment agreements and briefing documents, however, in practice, this project evaluation may occur during the defects liability period.