Hi there, We have been working with a builder for the last 12 months to construct a building on our property. The builder asked whether he could charge some hours to alter our plans. We agreed, as we were to shortly start building. When we got the total building estimate for the project from the builder, we requested further detail be provided. i.e labour v materials. He refused to provide us this and then walked away from the project. As a result we have lost some potential income that would have been derived from the building. We have also had to have our draftsman re do the plans. His plans have not been certified by an engineer. He has sent us an invoice for the hours he worked on the plans we are not using. From our perspective, his work on the plan was in conjunction with him building the project, as we would not have agreed for him to modify our plans on the proviso he would not use them to execute the build. We advised him that for us to consider payment, he would need to have the plans certified by an engineer, as otherwise they have no value. What are your thoughts on the agreement/contract/payment?