What if the vaad bayit spends fees on something I did not approve?

You have the right to inspect the building's income and expenditure records under Regulation 10 of the Building Committee Regulations 1974 — the committee must provide access within 14 days of a written request. If you identify unauthorized expenditure, you can challenge it at the Magistrates Court and seek an order for reimbursement. If committee members diverted funds for personal use, this is also a criminal matter reportable to the Israel Police.