Add the previous and current sets
Identify milestone, permit, bid, addendum, bulletin, or construction-document versions and align related sheets.
Turn drawing changes into a clear change narrative
Compare a previous and current PDF drawing set, organize the changes, and focus review on constructability. Contractors can investigate what changed before pricing or building; architects and engineers can prepare a traceable milestone change narrative.
Available to beta users upon request.
For contractorsFocus revision review on access, clearance, sequencing, routing, scope, and installation constraints.
For design teamsDraft a source-linked change narrative between milestones such as Design Development and Construction Documents.
For the full teamDiscuss the same verified list of changes instead of reconstructing it from separate markups.
From two sets to one reviewable story
Separate “something moved on the page” from “this change may affect how the project is coordinated or built.”
Organize meaningful changes
Group added, removed, and revised information by sheet, location, discipline, system, and possible constructability impact.
Verify and communicate
Review every cited change, then prepare a contractor-facing comparison or a design-team change narrative.
Constructability review for builders. Change narratives for designers
The same verified change can be framed differently for the team receiving it. A contractor may need to understand access, sequence, procurement, or trade coordination. An architect or engineer may need to explain what changed from DD to CD and point to the affected sheets.
Available in request-based beta- Constructability implicationsFlag changes that may alter routing, clearances, access, installation, sequencing, or coordination.
- Traceable change narrativeDraft a concise milestone narrative with before-and-after sheet references for professional review.
- Estimator handoff—not an estimateOrganize changes that may deserve quantity, procurement, or pricing review without claiming a cost delta.
Change evidence, not automatic conclusions
A drawing difference is not automatically a construction problem or a cost change. The beta workflow helps teams find and organize possible implications; contractors, estimators, architects, and engineers verify the sources and make the project decisions.
Comparing two drawings of the same place in one set, such as stacked floors or an architectural plan against the structural plan, is a different job; see drawing overlay.
- No replacement for estimating or cost validation
- No final constructability, design, or engineering determination
- Source-linked changes reviewed by the responsible team
About drawing comparison
Can Groundbook AI compare two versions of a drawing set?
Yes. Drawing version comparison is available to beta users upon request for constructability review and source-linked milestone change narratives. Book a demo to discuss your workflow and beta access.
Will it calculate the cost of each change?
No. The focus is constructability and document change. The workflow may organize changes that deserve an estimator’s attention, but pricing, procurement, and cost validation remain with the contractor and estimating team.
Which drawing milestones can be compared?
The beta workflow can support comparisons such as Schematic Design to Design Development, DD to Construction Documents, permit resubmissions, bid addenda, bulletins, ASIs, and other issued PDF drawing sets.
What should we bring to a demo?
If possible, bring a redacted example of two drawing versions, the change narrative or comparison you create today, and the decisions that take the most manual effort. A sample is helpful but not required.
Request Access for your next drawing comparison
Book 30 minutes to discuss your current revision workflow and the drawing sets you want to compare.