A mandatory pre bid meeting or a late addendum can void a specialty bid or move the scope after pricing, and a subcontractor that misses these dates loses the job before it starts.
What pre bids and addenda set
Many specialty solicitations require attendance at a pre bid meeting or site walkthrough for a bid to be responsive, and they issue addenda that change the scope, the schedule, or the terms up to the bid date. The instructions set whether attendance is mandatory and how addenda must be acknowledged.
Why these deadlines are easy to miss
The mandatory pre bid date and the addenda sit in the instructions and the running addendum log, not the title, and addenda land on the owner's schedule. A sub that misses a mandatory walkthrough or a late addendum is non responsive or prices the wrong scope.
How an AI bid agent catches these deadlines
An AI bid agent reads each specialty solicitation, extracts the mandatory pre bid date and tracks the addenda, and surfaces them with the bid date. The sub never misses a walkthrough or a scope change.
You can see how the agent reads a solicitation in our AI bid agent demo for specialty trade contractors. It extracts the mandatory pre bid date and tracks addenda so no deadline is missed.