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.
Revisions Are Normal — Opaque Revisions Are Not
Second inspections legitimately change scopes: hidden damage is exposed during demolition, moisture spreads past the first dry line, a discontinued profile forces a wider replacement. The scope changing is evidence that the documentation process is working.
What makes a revision suspicious is silence — a new scope with no record of what new evidence produced it. Reviewers cannot verify a change they cannot see, so undocumented revisions invite wholesale rejection of otherwise valid work.
The Three Revision Triggers
Demolition or opening exposes substrate damage that was physically invisible during the first visit — documented with before/after cavity photos.
Re-measurement or a better datum changes a quantity — documented with the corrected sketch and the original figure beside it.
New context — a matching constraint, a code requirement, an owner decision — moves the repair boundary without any new physical damage.
Writing the Change Record
A change record has four fields: what changed, what evidence triggered it, when that evidence became available, and which line items moved. Two sentences per changed item is usually enough — 'Boundary extended 6 LF east after opening revealed plate decay; photos 31-34'.
Keep the superseded scope visible. A fieldbook that shows version 1, the trigger, and version 2 lets a reviewer replay the reasoning instead of trusting the outcome.
A scope revision is trustworthy exactly to the degree its trigger is documented.
Revision Trace Reference
| Trigger | Evidence Expected | Scope Effect |
|---|---|---|
| Concealed condition | Cavity photos before/after opening | Added line items, boundary shift |
| Measurement correction | Updated sketch, delta note | Quantity changes only |
| Boundary re-evaluation | Context photo + decision note | Extent change without new damage |
