Which statement best describes a performance-based interior design specification?

• A. A specification that mandates exact products by brand name.
• B. A specification written without any performance criteria or standards.
• C. A specification that focuses only on color and texture without performance support.
• D. A specification that defines required performance outcomes, cites standards, and includes installation details and testing requirements.

Answer: (D)

Performance-based interior design specifications describe the required performance outcomes and how those outcomes will be verified, rather than dictating exact products. They spell out what the finished result must achieve, reference the applicable standards, and include installation details plus testing or inspection requirements to prove compliance. This approach lets contractors select materials or systems that meet the specified performance criteria while still ensuring safety, durability, and code compliance. Prescribing exact brands is too restrictive and misses the point of performance-based design; a spec written without performance criteria is vague and untestable; and focusing only on color or texture ignores essential functional requirements like durability, safety, and installability.