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Estimating & Biddingaka: pre-bid meetingaka: job walk

Pre-Bid Conference

In Plain English

A meeting where the owner explains the project to potential bidders and answers their questions before bids are due.

Definition

A pre-bid conference is a meeting held before the bid due date at which the owner, designer, and prospective bidders gather to review the project, answer questions, and clarify bid requirements. Attendance may be mandatory or optional. Questions and answers from the pre-bid conference are typically issued as an addendum to the bid documents.

Why It Matters in Bidding

The pre-bid conference is often an estimator's only chance to surface scope ambiguities, site-access constraints, and phasing requirements directly with the owner and designer before pricing is locked in. Information shared here typically becomes a binding addendum, so what you learn can shift your takeoff quantities, general conditions, and contingency. Skipping a mandatory conference usually renders a bid non-responsive and disqualifies it outright.

Example

Before pricing a school renovation, the estimator attends the mandatory pre-bid walkthrough, learns the work must occur in two summer phases around the academic calendar, and adds general conditions and mobilization costs that competitors who skipped the meeting will miss.

Related Terms

Invitation to BidAddendumBid DocumentsSite Visit

Frequently Asked Questions

Focus on items that affect your number: unclear scope splits between trades, site access and staging limits, working-hour restrictions, available utilities, phasing and milestone dates, and any conflicts between drawings and specifications. Asking on the record forces written answers in an addendum that all bidders must honor, leveling the field.
It depends on the bid documents. Public and complex private projects often make it mandatory, and a sign-in sheet documents attendance. Bids from contractors who miss a mandatory conference are typically rejected as non-responsive, so always check the instructions to bidders before assuming attendance is optional.
Verbal responses are not binding. Owners reduce questions and answers to writing and issue them as an addendum to the contract documents. Estimators should price only what appears in the addenda, not what was said in the room, and confirm receipt of every addendum before submitting their bid.

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