Public works bidding terms, defined
Plain-language definitions of common public works bidding terms — bid packages, bonds, addenda, prevailing wage, DBE participation, and more — each with an authoritative source.
What is a bid package?
A bid package is the complete set of documents a public agency issues so contractors can prepare and submit a bid — typically the invitation to bid, instructions to bidders, the bid form, drawings, technical specifications, contract terms, and any required certifications.
Read answer →What is a bid bond?
A bid bond is a form of bid security guaranteeing that, if you win, you'll actually sign the contract and furnish the required performance and payment bonds — and if you walk away, the surety covers the agency's cost of going to the next bidder.
Read answer →What is a performance bond?
A performance bond is a three-party guarantee — between the contractor (principal), the owner (obligee), and a surety — that the project will be finished according to the contract if the contractor defaults.
Read answer →What is a payment bond?
A payment bond guarantees that subcontractors, laborers, and material suppliers on a project will be paid, even if the prime contractor defaults or goes under.
Read answer →What is a planholder list?
A planholder list is the agency-maintained roster of firms that have obtained the bid documents for a given project — generals, subs, and suppliers who've registered through the plan room or procurement portal.
Read answer →What is an addendum?
An addendum is an official, written change to the bid documents issued by the owner before bids are due — it might revise the scope, correct a drawing, extend the deadline, or answer a bidder's question.
Read answer →What is a mandatory pre-bid meeting?
A mandatory pre-bid meeting is a scheduled conference — often paired with a site walk — that bidders must attend to be eligible to bid.
Read answer →What is liquidated damages?
Liquidated damages are a pre-agreed dollar amount the contractor must pay the owner for each day a project finishes late — set in advance because the owner's actual delay costs would be hard to prove after the fact.
Read answer →What is a bid tab?
A bid tab (bid tabulation, or “abstract of bids”) is the public record of all bids received on a project, listing each bidder and their prices line by line after the bids are opened.
Read answer →What is DBE participation?
DBE participation refers to the share of a federally assisted contract performed by a certified Disadvantaged Business Enterprise — a for-profit small business that is at least 51% owned and controlled by socially and economically disadvantaged individuals.
Read answer →What is a responsible bidder?
A responsible bidder is one the agency judges actually capable of performing the contract — with the financial resources, experience, equipment, licensing, integrity, and track record to do the job.
Read answer →What is a responsive bid?
A responsive bid is one that complies in all material respects with the invitation to bid — it offers exactly what's asked for, follows the submission instructions, and includes every required form and acknowledgment.
Read answer →What is a notice to bidders?
A notice to bidders (or “invitation to bid” / “advertisement for bids”) is the public announcement that a project is open for bidding — it identifies the work, the agency, where to get documents, and the date, time, and place bids are due.
Read answer →What is a public works spec book?
A public works spec book is the written volume of technical specifications for a project — the detailed product, material, and execution requirements that the drawings can't capture.
Read answer →What are supplementary conditions?
Supplementary conditions are the project-specific modifications to the standard “general conditions” of a construction contract — they amend, add to, or delete the boilerplate terms to fit a particular job.
Read answer →What is builder's risk insurance?
Builder's risk insurance is a specialized property policy that covers a structure while it's under construction, protecting against physical loss or damage from perils like fire, wind, theft, and vandalism.
Read answer →What is additional insured status?
Additional insured status is an arrangement in which a party other than the policyholder — often the owner or general contractor — is added to another party's insurance policy, giving them protection under that coverage.
Read answer →What is a bid form?
A bid form is the standardized document a contractor fills out to submit its price and required representations — the agency's template for capturing the bid so every offer can be compared on equal terms.
Read answer →What is a unit price bid?
A unit price bid is a pricing structure where the contractor quotes a price per unit of work — per cubic yard of concrete, linear foot of pipe, ton of asphalt — and gets paid for the actual quantities installed.
Read answer →What is a force account item?
A force account item is work paid on the basis of actual cost — labor, equipment, and materials, plus an allowance for overhead and profit — rather than at a fixed bid price.
Read answer →What is a subcontractor listing requirement?
A subcontractor listing requirement compels a prime contractor to name, in its bid, each subcontractor that will perform a meaningful portion of the work — typically above a small percentage threshold of the total bid.
Read answer →What is a prevailing wage requirement?
A prevailing wage requirement obligates contractors on public works to pay laborers and mechanics at least the locally prevailing wage and fringe benefits for their trade and area, as set by the government.
Read answer →What is a project labor agreement?
A project labor agreement (PLA) is a pre-hire collective bargaining agreement that sets the terms and conditions of employment for everyone working on a specific construction project, negotiated before work begins.
Read answer →What is a prequalification requirement?
A prequalification requirement makes contractors demonstrate their qualifications — financial capacity, experience, safety record, equipment, licensing — and get approved before they're allowed to bid, rather than after.
Read answer →What is a bid/no-bid decision?
A bid/no-bid decision is the go/no-go call a contractor makes about whether to pursue an opportunity — weighing fit, risk, competition, capacity, schedule, and margin potential before investing the hours an estimate demands.
Read answer →See Nonlinear in action
Nonlinear helps public works and infrastructure contractors find, read, qualify, and act on bid opportunities — turning public bid documents, specs, addenda, and planholder data into structured outputs teams can review.
