Select two versions
Upload the older and newer PDF drawing sets. Use design milestones, permit revisions, bid addenda or construction updates.
Change Narrative
Know what changed between drawing versions. We compare two versions and explain what changed, with before-and-after descriptions, affected trades and sheet references.
Architects & engineersCommunicate design revisions and coordinate changes across disciplines.
Contractors & estimatorsReview addenda, update estimates and request revised trade quotes.
Owners & project managersFollow scope changes between milestones and prepare for project decisions.
From revised drawings to a shared understanding
Give the team a clear account of the changes before the next coordination meeting, bid or scope discussion.
Read what changed
Review before-and-after explanations, affected trades and quantity differences where they can be determined. Search or filter by trade and sheet.
Check the drawing evidence
Open a change on the drawing, compare the older and newer layers, and export the narrative for your team.
See the change and its explanation together
A real example from our Farm Shop comparison: revised pad dimensions, affected trades and the resulting concrete quantity change.
Use the same change record across the project
A revision can affect design coordination, pricing and work in the field. Give each team the sheet references and explanation it needs to review its part.
- Between design milestonesHelp architects and engineers explain revisions from design development to construction documents and coordinate consultant updates.
- During bidding and procurementHelp estimators and trade partners identify scope to revisit when an addendum or revised set arrives.
- During constructionHelp owners, designers and builders review revised scope together before a change-order discussion.
About Change Narrative
What does a change narrative include?
A written summary of drawing changes, with before-and-after explanations, affected trades and sheet references. Open each change to review the drawing evidence. Quantity differences are included where they can be determined.
Who is it for?
Architects, engineers, owners, project managers, contractors and estimators. Use it to communicate design revisions, coordinate disciplines, update estimates and review scope changes.
Which versions can I compare?
Use drawing comparison to review older and newer PDF sets from design milestones, permit resubmissions, bid addenda or construction revisions.
Does it price changes?
It identifies quantity differences where the drawings support them and flags quantities that need verification. Your team reviews the changes and determines pricing.
Make the next revision easier to review
Compare two drawing versions and give your team a clear account of what changed.