DETAILED 3D DESIGN
For this process, an indication of materials and some performance criteria to ensure that the contractor has enough information to supply accurate quotation and that the design is executed in a way that reflects the vision of the scheme. Usually detailed design would be required to a level whereby the information produced is sufficient to satisfy the building control officer to grant building regulations approval.
In many cases it may be more suitable to develop the design down to the finer details. This will depend on the priorities of the project and will be fully detailed in the scope of works/fee proposal.