Specification-level QA is the practice of preventing entire categories of quality failures by specifying the correct materials and methods at the estimate and design stage — before any work begins. Examples in Utah: specifying 4,000 PSI air-entrained concrete (rather than 3,000 PSI) for exterior applications eliminates freeze-thaw scaling failures that develop in years 5–10; specifying IECC Zone 5 insulation R-values (R-49 attic, R-20 wall) ensures code compliance before insulation is installed; specifying SDC D shear wall nailing schedules ensures seismic resistance before framing is covered. Specification errors are free to correct before work begins and extremely expensive to correct after installation. Specification-level QA is the most economical form of quality management — the cost of reviewing and correcting a specification before work is zero; the cost of replacing incorrectly specified work after installation can be 100× higher.