Guide
Handling addenda with AI
In short
When an addendum arrives, re-measure only the revised sheets, re-price the rows that changed and revise the bid you already submitted. With Field24, you send the addendum in chat and it does those steps for you.
What an addendum changes
Addenda revise sheets, add or change specification sections, and answer bidders' questions. Any of them can move your number: a wall type changes, a room is added, an alternate is clarified. You are expected to price every addendum, and most bid forms ask you to list them.
A fast way through it
- Read the addendum's summary of changes and list the sheets it revises.
- Compare each revised sheet with the one you measured; clouds and deltas mark the changes.
- Re-measure only what changed and re-price those rows.
- Update the proposal and acknowledge the addendum on the bid form.
How Field24 handles it
Send the addendum in chat: the affected sheets are re-measured and the rows re-priced. If the bid already went out on BuildingConnected, Field24 can revise it, behind an Accept prompt you control.
Common questions
Do I have to redo the whole takeoff for an addendum?
No. Only the revised sheets and the rows they touch need re-measuring and re-pricing.
Can a general AI assistant handle an addendum?
It can summarize one you upload, but nothing gets re-measured or re-priced; you still do that yourself.
Keep reading
Last reviewed November 9, 2026. Cite as: AI for Construction, “Handling addenda with AI,” https://ai-4-construction.com/guides/handling-addenda/