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Estimating & Bidding

Bidding Documents

In Plain English

The full package of documents an owner issues to get contractors to submit bids.

Definition

Bidding documents is the formal term used in AIA contracts for the complete set of documents issued to obtain bids, including the invitation or advertisement to bid, instructions to bidders, bid form, and proposed contract documents. They define the project scope, bid requirements, and contractual terms. The term is sometimes used interchangeably with bid documents.

Why It Matters in Bidding

Bidding documents are the package that frames every competitive procurement, and the precise definition matters because only certain components survive into the binding contract. Estimators rely on the instructions to bidders within them to know submission deadlines, bid security, and bonding requirements that govern whether a bid is even accepted. Because it is the formal term used in standard AIA agreements, getting it right avoids confusion in contracts over what was contractually incorporated versus merely used to obtain bids.

Example

The architect issued the bidding documents through an online plan room, and a supplemental addendum revising the instructions to bidders changed the bid security requirement from 5 to 10 percent.

Related Terms

Bid DocumentsInvitation to BidSpecificationBid Form

Frequently Asked Questions

In everyday use they are treated as synonyms, both meaning the full package an owner issues to solicit bids. Bidding documents is the precise term used in AIA contract language, while bid documents is the common shorthand. The distinction rarely matters in conversation but can matter in contracts that formally define which documents are incorporated.
A typical set includes the advertisement or invitation to bid, the instructions to bidders, the bid form, bid and contract bond forms, the proposed agreement, general and supplementary conditions, the specifications, and the drawings. Addenda issued during the bidding period also become part of the bidding documents and must be acknowledged by each bidder.
Generally the drawings, specifications, agreement, and conditions of the contract carry through into the executed contract documents. Procurement-only items such as the invitation to bid and instructions to bidders serve their purpose during bidding and typically fall away, so they are not part of the binding contract unless specifically incorporated by reference.

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