465. Duty as to estimates and quantities.

Where the architect or engineer is required to give an estimate of the cost of proposed work, the estimate should be careful1 and give appropriate warnings as to inflation2. However, the fact that the eventual cost exceeds the estimate is not of itself sufficient to establish a breach of duty3. Contrast the position where the estimate is required to be given by the architect, and the position where the budget is provided by the client and there is an expectation that the architect will use skill and care to design a scheme within the constraints of the client's budget.