Which is an example of a design defect in a building?

A design defect in a building refers to a flaw in the planning, architecture, or design of the structure that affects its intended use or safety. Inadequate lighting falls under this category because it directly relates to the design and functionality of the space. If a building is not designed with sufficient lighting, it can impede normal use, lead to safety hazards, and diminish the overall living or working experience.

On the other hand, a cracked foundation, leaky roof, and oxidized materials represent problems that typically arise from construction errors, wear and tear, or material degradation over time rather than flaws in the initial design. These issues may need to be rectified but do not originate from the design phase of the project, distinguishing them from design defects.