Construction Costs Throughout the planning and design process preliminary cost figures can be made available. More detailed estimates would normally be done by consultants. Cost control with contracts other than fixed price would also be done by outside consultants. For new projects of small size, detailed material lists can be produced to assist in the costing exercise. Meetings with the client will ensure that the design is developing in a agreeable direction.
Preliminary costs have to be worked out to make sure that the project stays within the budget.
The end result of this stage is a set of drawings which can be used for rezoning applications, development permit, rough cost estimates from contractors and for financing applications. Often these drawings are accompanied by perspective renderings, computer modelling or models. Existing buildings can be assessed by means of an inspection . The contract documents include contract, working drawings, specifications and schedules used for building permit , costing , bidding process, financing and construction. During the bidding stage addenda can be added, during the construction phase change orders and site instructions.