What is an Observatory?
An observatory can be a small as a permanently-mounted telescope under a tarp, as big as the 10-meter Keck Telescopes in Hawaii, and everything in between.
As far as amateur observatories go, CBBHO strives to be quite ambitious. In this arena, anything requiring a set of plans means that there are millions of things to think about and tons of people to get involved.
Keep in mind that a structure built for astronomy requires a certain number of considerations, since there are potential liabilities that must be addressed in the design.