[camp guy]

All of us posters who are from Towns other than Gilford are seeing this issue through the lens of our own Town regulations, and are probably seeing the cost through the lens of the latest home improvement done by ourselves. I have never seen the present bath house nor the snack shack nor the life guard storage facility, but if all this is being replaced it must be pretty old. And if it is pretty old, let's realize that the rules and Codes have changed significantly since the original construction. The Codes are designed to insure some level of safety, and some level of environmental protection toward saving the Lake. As we all know, the Lake is what it is all about when it comes to the summer economy of this area. Even if the policy is to allow Gilford residents only, the Lake is still the major factor.
Depending how the Gilford selectmen decide to finance this expense, either by direct, full payment, or by a multi-year bond, that will play heavily into the actual per year cost.
My humble suggestion would be to let the Gilford selectmen figure this out.