Reference check for qualifications and previous job experience recommended. We found out that this contractor is self-taught as opposed to having any certification to back up his stated qualifications. We did take the time to review other projects that this builder had done, but it wasn't sufficient validation at the end of the day. Several issues arose, mostly related to his poor social skills & lack of real professional training - virtually everything became an argument. It is recommended also that you get a detailed billing for each stage of the project. We were invoiced, we paid the bills but later discovered there were many purchases of tools that we paid for plus a 13% markup on those purchases, and we found this very disconcerning. Over the length of the project many situations with regard to not meeting building codes and not following the building plans became costly mistakes. As it stands now, the foundation was not built/formed to code, so we have an internal step that is too large for one step and too short for two steps, which prevents us from legally occupying the home. We've been in the home 2.5 years, and the internal step issue has still not been resolved by the contractor. I could speak in great detail about the lengthy issues we encountered with BB Builders, but I think the point above speak for themselves.