When encountering unexpected costs or budget overruns, the contractor’s primary approach needs to have transparency and efficient communication. Firstly, they should assess the situation to determine if the additional expenses are unavoidable. If not, they should immediately communicate this with you, providing a detailed breakdown of the added costs and the reasons behind them. Quality contractors aim to work within the originally agreed upon budget, but sometimes unforeseen challenges arise. In such cases, the contractor should discuss potential options with the client, finding cost-effective solutions, and ensuring your satisfaction with the approach taken.