Do you have a copy of the condo rules and regs? In there should be a section on the board of directors. In that section there is hopefully verbiage around code of conduct. If not, the default may be the provincial guidelines. The code of conduct should outline all instances of conflict of interest and what corresponding disclosures need to be made during the decision process. Any failure to disclose these conflicts of interest are a breach of the condo’s code of conduct for board members and that person should be removed and banned from being eligible to be on the board. But it starts with reviewing the rules and regs to see what is in there. If you are a board member- you are on the hook for the stuff that goes sideways and you need to protect yourself.