This stage takes all the desired elements from the sketch design proposals into one coherent design. All the required elements are agreed in principle and presented in the form of an accurate plan to scale with supporting perspectives. A detailed estimate is put forward to give a fair idea of the total cost of the project. Any planning issues that arise are dealt with at this stage, preparing the relevant documents for the local Mairie if required. Once both parties are satisfied with the Master plan, focus changes to the detail of the design.