Preconstruction
AI across the preconstruction workflow
Bottom line
Most AI tools handle one step of a bid, usually the takeoff. Field24 covers all eight: invitation, organizing the documents, takeoff, pricing, addenda, proposal, submission and the project after award.
The eight steps
- Invite. BuildingConnected, Merx and PlanHub invitations, public bid alerts, or a forwarded email land in one place.
- Organize. Plans, specs and addenda are pulled into one project.
- Takeoff. Every sheet is measured with computer vision, and every row is marked where it was found.
- Pricing. Home Depot for residential, private cost databases for commercial, labor adjusted to your ZIP.
- Addenda. Send the addendum; the changed sheets are re-measured and re-priced.
- Proposal. Client-ready and signable, on your template.
- Submit. Drafted, submitted and revised on BuildingConnected. You accept each send.
- Project. Once the job starts: change orders, and finding the details you need on the plans.
Step by step, compared
| Step | Field24 | Togal.AI | PlanSwift | ChatGPT |
|---|---|---|---|---|
| Invite | Yes | Procore and Bluebeam import | Done by you | Done by you |
| Organize | Yes | Plan sets in the workspace | Files on your PC | Upload the set |
| Takeoff | Yes | Automatic detection | Point-and-click tracing | Estimates by eye |
| Pricing | Yes | Exported to other software | Your own assemblies | No price data |
| Addenda | Yes | Drawing comparison | Re-trace what changed | Summarizes; you re-measure |
| Proposal | Yes | Not offered | Estimate reports | Drafts the words |
| Submit | Yes | Not offered | Not offered | Not offered |
| Project | Yes | Plan search and chat | Not offered | Answers questions |
Competitor details from each vendor's public materials, checked September 2026.
Why addenda matter
An addendum two days before bid day is where estimates go wrong. With Field24 you send it in the chat; the affected sheets are re-measured, the rows re-priced, and a submitted bid can be revised.
Common questions
Can AI submit a bid for me?
Field24 drafts, submits and revises bids on BuildingConnected, behind an Accept prompt you control.
Can AI pull plans from BuildingConnected?
Yes. Field24 lists, opens and downloads invitations from BuildingConnected, Merx and PlanHub.
Sources
Keep reading
Last reviewed November 9, 2026. Cite as: Best AI for Construction, “AI across the preconstruction workflow,” https://best-ai-for-construction.com/preconstruction/