Floor Craft, a flooring contractor, sued an architect for economic losses caused by defective plans, even though they had no direct contract with each other. The Ohio Supreme Court ruled that contractors cannot sue architects in tort for purely economic damages without a direct contractual relationship (privity). This means if you're a subcontractor harmed by an architect's negligent design work, you generally cannot recover money damages unless you signed a contract directly with that architect.
Do not rely on suing architects or other design professionals for economic losses unless you have a written contract directly with them