A Good Communicator
Construction of any sort can be a pretty major feat. Whether you are building a house or a high-rise, there are going to be a lot of steps (and people) involved in the process. In addition, as the client, you should be getting exactly what you've asked for from your contractor. With all of those pieces fitting together, knowing that your contactor is an excellent communicator is key to the process. Being able to tell him exactly what you want is vital to your happiness with the final product. Your contractor should also be able to tell you the things about your vision that might be more difficult or downright impossible. If the lines of communication are open and clear, then the final product will be something that you and your contractor can look at with pride.