The sponsor of your condominium is your business partner. He (and let’s be honest, most of them are men) is the developer who built or renovated the condominium building and sold you your unit. As long as he controls the board of managers, he controls the business decisions of the condominium. Even when he no longer controls the board of managers, so long as he owns any of the other units, such as a store on the ground floor or other residential units, you and he are business partners in the operation of the condominium. He is supposed to honor his promises to you, but he is not supposed to solve all the problems with the condominium. You are a building owner now — together with all the other unit owners, including the sponsor — and those problems have to be solved together.