Addendum & Revision Impact Review
Track Drawing Changes, Scope Modifications & Quantities to Recheck
Drawing Revision Comparison • Addendum Delta Audit
How BuildDesk Performs This Review
Mid-bid addenda and architectural bulletins are where projects silently lose profitability. BuildDesk performs systematic visual and callout comparisons between original bid sheets and revised documents, mapping every revision cloud, deleted detail, and changed specification note to affected trade scopes.
- •Original bid document set (Plans & Specifications)
- •Revised drawings, addenda, or architectural bulletin sets
- •Narrative summary or architect's addendum memo (if issued)
- Compare drawing versions sheet-by-sheet to detect delta areas and modified details
- Examine revision clouds, deltas, and unclouded drawing alterations
- Correlate drawing modifications with specification section changes
- Identify exactly which trade scopes require estimator rechecking
What You Receive
Structured executive summary showing drawing changes, affected scopes, quantities requiring recheck, and spec adjustments.
Inspect Sample Deliverable →Line-by-line breakdown mapping each modified sheet number, revision block, original condition, revised condition, and impact notes.
Sample Revision Impact Summary
| Sheet | Revision | Original Condition | Revised Condition | Affected Scope | Impact / Action | Status |
|---|---|---|---|---|---|---|
| A-102 | Delta 3 | Open plan office layout | Added 2 private offices + conference | Drywall / Doors / HVAC | Add 84 LF partition wall + 3 doors | RECHECK REQUIRED |
| A-501 | Delta 2 | Standard hollow metal frame | Rated acoustic frame & seal assembly | Doors & Hardware | Specialty STC 45 frame package required | SPEC CHANGE |
| E-201 | Delta 3 | 14 recessed 2x4 fixtures | 22 architectural LED linear pendants | Electrical & Lighting | Fixture schedule changed; recheck counts | QUANTITY RECHECK |
| M-101 | Delta 2 | Single RTU-1 serving Zone A | Split system with VAV zoning | Mechanical / Controls | Equipment schedule completely revised | MAJOR SCOPE DELTA |
Operating Boundary // Addendum & Revision Impact Review
BuildDesk provides focused technical document support strictly from documents supplied by the client. We maintain complete transparency on our capabilities and boundaries.
- ✓Compare client-provided document sets objectively
- ✓Log visible drawing modifications and cloud revisions
- ✓Flag scopes that warrant trade price adjustments
- ✓Document specification wording changes between versions
- ×Guess architect intent on unnoted modifications
- ×Issue architectural or engineering clarification requests on your behalf
- ×Calculate structural engineering load changes
- ×Guarantee that unclouded modifications were officially authorized
Addendum & Revision Impact Questions & Answers
Q1.How do you detect changes that the architect forgot to cloud?
We perform systematic digital overlay comparisons between the two drawing sets. Subtle geometry shifts or text alterations that lack revision clouds are highlighted and logged in the report.
Q2.Can you provide a revision review for a single trade?
Yes. For subcontractors, we filter the review strictly to your trade sheets and any architectural or structural sheets that intersect your scope.
READY FOR A FIRM UPFRONT QUOTE?
Send us the project files for addendum & revision impact review. We will confirm sheet counts, turnaround, and an exact price before work begins.