Damage Analysis and Estimating Fundamentals
The purpose of an estimate
An estimate is a documented, defensible prediction of the cost to restore a vehicle to its pre-loss condition. The candidate must understand the three-legged stool of any estimate: labor (operations and time), parts (type, availability, price), and materials (paint, seam sealer, corrosion protection, adhesives). Miss any leg and the estimate is incomplete.
Core concepts
Know the difference between damage analysis (what is actually damaged and how it must be repaired) and estimating (pricing that repair). Know operations: remove/install (R&I), repair, replace, refinish, and structural measuring. Understand overlap and included operations - some labor is already captured by another line, and double-charging is a common error. Understand not-included items (masking, flex additive, corrosion protection) that must be added explicitly. Understand betterment and prior damage, and that the estimate must reflect the loss, not pre-existing conditions.
Traps
Questions love to blur "repair" vs. "replace" thresholds, or imply that a low estimate is automatically wrong. Another trap: assuming all labor is billed at one rate when body, paint, and mechanical rates may differ. Watch for items described as "included" that are actually not-included, and vice versa.
Worked example / rule of thumb
Rule of thumb: an estimate is a scope document first and a price second. If you cannot describe the repair operation in words, you cannot price it. Example: a dented door with a crease at the body line - repair requires pulling, filling, blocking, and refinishing the full panel plus blending the adjacent panel; the estimate must show panel refinish, blend, and clear, not just "paint door."