Most of the time blue prints are more for the permit then the builder. If it's a really complicated home or building, a blueprint comes in handy, but what usually happens is they also confuse and cause problems. My experience with blueprints are that they have mistakes in them and most of the time you don't realize it until the framing is almost done and something doesn't fit right, or come together like the client wanted it.
Any builder with just about any experience can build a house from a sketch on a napkin.
For what you want, the clubhouse, draw it out on some graph paper. Put where you want the doors and the size of the windows. For the lowest cost, use window sizes that are very common, like 3040 and standard door widths, like 36 inches. 3040 means 3ft wide and 4 ft tall.
Your builder will figure out the roof and framing requirements. Mostly will just look at the dimensions and know what it will take in a minute.
As for the school doing it, I don't know. If they are allowed to do it, the teacher will probalby make designing it part of the class project. Figuring out the walls, the trusses and all the details would be a big part of learning how to build.
For what you want, it's a very simple building. Just to know for yourself, I'd make that sketch and then call five or six local builders and get a quote. You might be surprised at what you find out. If not, it doesn't cost anything to get a bid.
I myself use Broaderbund Home Design 5.1 for my plans. It allows me to move walls around, put the doors and windows in different places and put furniture in the space to see how it fits. I can even modify the size of the furniture and cabinets to get a proper layout. It's an older version that I got for a very reasonable price. They have much newer and fancier versions, but this one works fine and it's easy to use.
Eddie
