Building design is the first thing you'll have to consider when you want to build a large structure. You want to be sure that the person helping you with the design has a lot of experience with this type of work. This is because there are many logistical and legal concerns that go hand-in-hand with a construction project like this. An experienced designer will be able to build those concerns into his or her design to make the process very efficient. Finding someone who has experience with designing environmentally-friendly buildings can be a real asset for you as well. This is because buildings that follow eco-friendly standards are often cheaper to maintain over the long-haul. Depending on what eco-friendly features the design incorporates into the new building, you may even qualify for tax incentives depending on the laws in your area. If possible, find a designer who also has a strong working relationship with a construction professional. Finding contractors with this type of relationship can make the whole project much more efficient. Since they are used to working with each other, there's less of a chance for miscommunication between you, the builder and the person you hire to design the building.