We're all engineers and have learned that it doesn't need to be perfect until it comes to finish work. We built our family camp back in the summer of 1988 and have slowly been improving it to be one of the nicest on the island and have impressed some neighbors a long the way.
Materials for the 12' x 24' structure are closer to 8k for what you see. The finishing touches will add another 10k, which consist of red-wood siding, interior wall dividing the space, loft-build out, tiling, tongue-and-groove walls and ceiling, and a deck off the front. Its a bunk house with a garage in the back, but the owners are talking about running water and electricity by-way-of solar. We're finalizing details which obviously add to the cost.
I'll continue to update the thread with progress if you guys want.