Every missed change can cost your team thousands of dollars in lost profit.
Manually itemizing changes every time an addendum comes in.
One missed change means bidding at the wrong price.
Fast turnaround pressure is high on rebids/change orders.
It takes four to five bid cycles on average to win a structural steel job. That's before post-award change orders even start. Every revision means stopping what you're doing, finding the changes, and turning around an updated price while work continues to pile up.
HOW IT WORKS
Create and compare changes across every revision.
Upload your revised drawings
Add the new set to your existing LIFT project. Processing takes about one to two minutes per page for automated analysis.
LIFT identifies every change
AI compares the two sets member by member. Adds, deducts, and modifications are flagged automatically. Toggle the overlay to validate: green means new, red means removed. Click any member in the table to locate it on the drawing.
Review, validate, and export
All your previous estimate work carries over. Grades, finishes, categories, and any other fields you add. LIFT only touches what changed. Export a full BOM or just the changes.
Features
Revision management tools built for how estimators, contract administrators, and project managers actually work.
Every tool your team needs to process drawing revisions without starting over.
Automated change detection
Identifies every add, deduct, and modification between drawing revisions automatically.
Visual overlay comparison
Toggle overlay highlights what changed. Green for new, red for removed.
Click-to-locate
Click a member in the table, it finds it on the drawing. Click the drawing, it highlights in the table.
Previous work preserved
Grades, finishes, categories, copes, and holes carry over. LIFT only touches what changed.
Full estimator control
Every status is editable. Manual changes are tracked in the same audit history.
BOM export with change status
Full bill of materials with added, changed, and deducted status for every member.
Delta Report
Positive and negative line items ready for direct PowerFab import.
Color coded PDF export
Communicate changes visually quickly across the entire project.
Workflows
Compare drawing revisions automatically and see every change in seconds.
Upload your revised set and LIFT identifies every add, deduct, and modification, no manual overlay required.
Validate changes visually without flipping between drawing sets.
Toggle the color-coded overlay to see what's new in green and what's been removed in red.
Go from any line item to the exact member on the drawing.
Click a member in the table and LIFT locates it on the drawing. Click the drawing and it highlights in the table.
Keep every grade, finish, cope, and hole from your original estimate.
LIFT carries over all your previous work and only updates what changed between revisions.
Override any status and track every manual change you make.
Full estimator control with a complete audit history of AI and manual edits in one place.
Every change, flagged and quantified.
Full BOM export with added, changed, and deducted flags on every member. Tonnage summaries for adds, deducts, and net changes. Import change data directly into PowerFab with the Delta Report.
WHAT THIS MEANS FOR YOUR TEAM
For Estimators
When addenda arrive mid-bid, LIFT updates your quantities and tracks the changes. Spend your time on pricing, not re-counting.
For Project Managers
Every change is tracked with a before-and-after record. Export a clean delta report to justify pricing to the GC and owner.
For Operations Leaders
Fewer missed changes, faster turnaround, and a consistent process across your project portfolio.
Ready to See This with Your Own Drawings?
Book a demo and bring your toughest revision. We'll show you how LIFT identifies the changes and what the export looks like. If you're an existing LIFT customer, talk to your account team about getting access.
Beams, columns, and joists. Sections, details, and misc metals aren't covered yet.
Does it work for both addenda and change orders?
Yes. Any time revised drawings are issued, pre-award or post-award.
Will it overwrite my previous estimate work?
No. Grades, finishes, categories, copes, and holes all carry over. LIFT only updates what changed.
What if the AI gets something wrong?
Every status is editable, and manual changes are tracked in the same audit history.
Can I use this on jobs I've already started in LIFT?
Yes. Add a new version to any existing project and run the comparison against your completed takeoff.
What export options are available?
A full BOM with change status for every member, and a Delta Report with positive and negative line items for direct PowerFab import. Both include tonnage summaries.
How do I get access?
Book a demo at sketchdeck.ai, or if you're an existing LIFT customer, talk to your account team.
LIFT automates data extraction from drawings, creating accurate Bills of Materials quickly and effortlessly.
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