Budgets Cost: Please note costs are based on information available to the Engineer/Surveyor at the time. Please be aware that a budget cost is for guide purposes only as the actual cost can vary considerably between builders depending on the size of the company and their keenness to obtain the work and indeed the final specification which can often vary considerably. I recommend that all repair costs are subject to confirmation by further investigation/specification, followed by contractors’ competitive tenders prior to making any legal commitment.