"When a problem comes up the folks that deal with it are those that are effected, with the resources of the whole house behind them, instead of a property manag

"When a problem comes up the folks that deal with it are those that are effected, with the resources of the whole house behind them, instead of a property management company or one sole individual." You don't have friends or family? They drive the model you describe - and have for millennia - without fancy constructs like co ops. Or sacrificing personal space/privacy.