Key Takeaways
- Every scope statement must trace back to a physical observation and forward to an estimate line item.
- Record the boundary logic explicitly — the next reviewer cannot verify what was never written.
- Attach the evidence that would falsify the decision, not only the evidence that supports it.
How Divergence Happens
Estimator A anchors the boundary at the damage footprint: replace flooring only where cupping is measurable, feather the finish at the hallway threshold. Estimator B anchors at the continuous plane: the same hardwood runs unbroken through two rooms, so a partial replacement leaves a visible seam.
Both are working from the same photos, the same moisture map, the same damage. They diverge because they chose different boundary anchors — one physical, one visual. Neither is wrong. The scopes differ because the boundary logic differs, and the file should say so.
Two Boundary Logics Compared
Stops the repair where readings normalize. Minimizes included work, demands strong evidence the damage truly ends there.
Stops the repair where the material visually ends. Adds work beyond the damage but prevents an unblendable seam.
Whichever logic is chosen, the scope needs one sentence naming it — 'boundary set at threshold to preserve continuous run' — so the second reviewer sees the reasoning, not just the result.
Keeping Both Versions Defensible
A fieldbook does not pick the winner between two defensible boundaries; it records which anchor was chosen and what would falsify it. For the footprint logic, the falsifier is a continuous-run photo showing no break. For the plane logic, it is a documented natural transition that supports a clean stop.
When the alternative is named and addressed in the scope notes, disagreement between estimators becomes a comparison of documented choices rather than a credibility contest.
Two scopes can disagree and both be right — provided each states the anchor it chose.
Divergence Reference Table
| Anchor Type | Stops Repair At | Evidence Needed |
|---|---|---|
| Damage footprint | Metered dry line | Moisture map + boundary frame |
| Continuous plane | Material/room break | Run-through photo, transition check |
| Component boundary | Assembly edge (cabinet, casing) | Component photo + detach note |
