Then again your property taxes will probably go up as well with a boat house. How far out that dock to you have to go to have water deep enough to float a larger boat at low tide or on a neep tide? That is a long way to run electric to run a lift and lifts for 20 something foot boats are not inexpensive, neither is getting a barge to drive in the pilings to frame out a boathouse. It would be nice to have but is the juice worth the squeeze to you to have a boat house? Not knocking you Uncle, probably has your best interests in mind but it is easy to spend big bucks when it is someone elses's money. A good custom boat cover from one of the many canvas shops on the bay would be a lot less money.
When you are up to your butt in alligators, it is hard to remember your intent was to drain the swamp. Stay focused!