I'm Lucy, and I'd be happy to answer your questions today.
Members of the board have an obligation to act in the best interests of the entire community. They're bound by the same rules as everyone else. If regular people who live in the community cannot hook up washing machines because it modifies the plumbing, then board members cannot install new lavatories. I can't imagine any way they were able to make these additions without also modifying the plumbing. So, of the plumbing is a common element, then the board members have violated the bylaws. And if the plumbing isn't a common element, they have no basis for denying th washing machine.
Any unit owner can file an action against the board for breach of their fiduciary obligation. The more owners that join together in protesting the board's action, the better, because then you can pool your resources to hire a lawyer if you want. Another option is to review the bylaws to see if your community has a procedure for removing board members. It may be possible to recall the rule breakers and get new board members who won't participate in selective enforcement. If the bylaws are silent, the members can recall a board member with a simple majority vote. Fl. Stat., Section 718.112. The third option is to speak with the members of the board who weren't involved to see if they are willing to take action - since they ALSO have an obligation to act in everyone's best interests, they can be compelled to get involved if there are enough non-rule-breaking members of the board to make a majority.
If you have any questions or concerns about my response, please reply WITHOUT RATING. It's important that you are 100% satisfied with my courtesy and professionalism. Otherwise, please rate my service positively so I am paid for the time I spend answering questions. If you are on a mobile device, you may need to scroll to the right. There is no charge for follow-up questions. Thank you.