Article Date: 12/01/2025

Expert Opinion Required for Project Owner’s Claims

Supreme Court of South Dakota

RTI, LLC v. Pro Engineering, Inc.

Case no.: 30565

Date filed: November 12, 2025

Overview

The South Dakota Supreme Court has ruled a project owner could not maintain claims against an architect, an engineer or an acoustical tile contractor without expert opinion. The owner’s CEO did not qualify as an expert.

Background

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