CON-220 · Lesson 3 of 12 · 27 min
Tendering, bidding and procurement law
Most construction work, and nearly all public construction work, is awarded through competitive bidding. A call for bids sets the rules, contractors price the work and submit bids, the owner evaluates them and awards a contract. Each step has legal consequences. A mistake in a bid can cost a contractor hundreds of thousands of dollars; an unfair evaluation can expose an owner to damages for lost profit; a subcontractor's late withdrawal can leave a general contractor carrying a loss. This lesson explains the law that governs bidding, from the formation of bid obligations to mistakes, evaluation, privilege clauses and challenges.
Why bidding law exists
Competitive bidding protects owners and taxpayers by obtaining fair prices, and protects bidders by promising them that the competition will be run fairly. Bidders invest real money in estimating, often thousands of dollars per bid, on the understanding that the owner will compare bids on the stated criteria and award accordingly. The law of tendering, in both countries, exists to enforce that understanding without destroying the owner's legitimate need to choose the best bid.
American bidding law is divided by owner. Federal procurement follows the Federal Acquisition Regulation (FAR), which sets detailed rules for sealed bidding and negotiated procurement and gives disappointed bidders the right to protest to the Government Accountability Office (GAO), the agency or the Court of Federal Claims. State and local public owners follow state procurement statutes and municipal codes, usually requiring award to the lowest responsive and responsible bidder. Private owners are generally free to choose any bidder unless they have made a binding promise in the bid documents.
Sealed bidding and responsiveness
Under the FAR, sealed bidding (FAR Part 14) is used when award can be made on price and price-related factors. Bids are opened publicly and award goes to the lowest-priced responsive bid from a responsible bidder. A bid is responsive if it complies in all material respects with the invitation for bids: it offers to do exactly what was asked, on the stated terms, without conditions. A bidder is responsible if it has the financial resources, experience, equipment, integrity and capacity to perform; responsibility is judged before award and may be shown by information submitted after opening. Negotiated procurement (FAR Part 15) allows award on best value, weighing price against technical and past performance factors stated in the solicitation.
State and local public owners usually follow similar principles.
- Bids are sealed, opened publicly at a stated time, and read aloud.
- Award goes to the lowest responsive, responsible bidder, unless the statute allows best value or all bids are rejected for good reason.
- Bid bonds or deposits, often 5 to 10 % of the bid, secure the bidder's promise to sign the contract.
- Post-bid negotiation that changes the work or price is generally not allowed in sealed bidding.
Private owners in most states may award to any bidder, negotiate after bids, or reject all bids, unless their bid documents promise otherwise. Some courts have held that a private owner who promises a fair process can be liable for breaching that promise, but American law does not have a general equivalent of Canada's Contract A.
Bid mistakes
Estimating under deadline pressure produces mistakes: a column not added, a page of the bid form missed, a subcontractor price entered without its cents point. What happens when a bidder discovers a mistake after bids close?
Under FAR 14.407, a bidder may seek relief for a mistake discovered before award. If the bidder presents clear and convincing evidence of the mistake and of the intended bid, the agency may allow correction, provided the corrected bid remains low; otherwise it may permit withdrawal. After award, relief is rare and requires showing that the contracting officer knew or should have known of the mistake. State courts apply similar equitable rules, generally allowing withdrawal where the mistake is material, clerical rather than judgmental, made without gross negligence, promptly reported and the owner is not prejudiced.
Contracting officers and owners must also check for obvious errors. An owner that accepts a bid it knows is wildly low because of a mistake may not be able to enforce it, and a low bid can also signal a bidder likely to fail.
Worked problem
Spotting an apparent error in a unit price bid
A unit price bid lists 5,200 yd³ of excavation at $14.00 per yd³ with an extended amount of $7,280.00. The solicitation says unit prices govern over extensions. What is the corrected extension, and what is the effect on the total?
Show solution
- Correct extension: 5,200 × $14.00 = $72,800.00.
- The bid total understated this item by $72,800 − $7,280 = $65,520.
- Applying the rule, the owner corrects the total upward, which may change the ranking of bids.
- The error was apparent on the face of the bid, so correction under the stated rule is fair to all bidders.
Answer: Extension $72,800; bid total increases by $65,520.
Evaluation, privilege clauses and fairness
Owners protect themselves with privilege clauses, such as the lowest or any bid will not necessarily be accepted, and with discretion clauses allowing them to waive irregularities. Both are useful, but neither is unlimited.
In federal procurement, evaluations must follow the solicitation's stated factors and their relative importance. A protester that shows the agency departed from the stated criteria, treated offerors unequally or made an unreasonable judgment can win corrective action, such as re-evaluation or a new award decision. GAO decides most protests within 100 days. State public owners must apply their statutes; a court may set aside an award to a non-responsive bidder, and disappointed bidders may recover bid preparation costs, and in some states lost profit, for an unlawful award. Waivers of minor irregularities are allowed only when the irregularity gives no competitive advantage.
| Issue | US position | Practical step |
|---|---|---|
| Withdrawal after opening | Barred, subject to mistake relief rules | Check prices before closing |
| Non-compliant low bid | Non-responsive bid must be rejected (public work) | Read every mandatory requirement |
| Undisclosed criteria | Grounds for protest | Disclose all criteria and weights |
| Exclusion of bidder claims | Varies; protest rights set by statute | Do not rely on waivers to cure an unfair process |
| Remedy for unfair award | Corrective action, bid costs, sometimes lost profit | Keep evaluation records |
Subcontractor bids
General contractors build their bids from subcontractor prices received in the final hours before closing. What if a subcontractor whose price was carried refuses to sign at that price?
Many states apply the doctrine of promissory estoppel to subcontractor bids, following the California Supreme Court in Drennan v. Star Paving (1958). If the general contractor reasonably relied on a subcontractor's bid in preparing its own, the subcontractor may be bound not to withdraw. The general contractor is not usually bound to the subcontractor, however, which allows bid shopping; some states and public owners require general contractors to list their major subcontractors in the bid and restrict substitution, as California does under its Subletting and Subcontracting Fair Practices Act.
Worked problem
Estimating the loss from a withdrawn subcontractor bid
A general contractor carried a mechanical price of $2,350,000 and won the job. The mechanical subcontractor withdrew. The next lowest mechanical bid was $2,480,000. If the subcontractor is bound, what loss can the general contractor claim, and what should it do first?
Show solution
- Loss of bargain: $2,480,000 − $2,350,000 = $130,000.
- First, give prompt written notice holding the subcontractor to its bid and inviting it to sign.
- Then mitigate by contracting with the next lowest qualified subcontractor and document the comparison.
- Claim $130,000 plus foreseeable costs, subject to the governing law.
Answer: About $130,000, after prompt notice and reasonable mitigation.
Good practice for owners and bidders
- Owners: state all evaluation criteria and mandatory requirements clearly; decide whether you want a binding bid process; apply the rules consistently; keep detailed evaluation records.
- Bidders: read every mandatory requirement; ask questions before closing; check arithmetic and missing scope; qualify nothing unless qualifications are allowed; know the withdrawal and mistake rules.
- Both: keep a record of addenda and clarifications, and of who said what during bid periods.
Bid rigging and collusion
Competitive bidding only works if bids are independent. Bid rigging, in which bidders agree among themselves who will win, take turns submitting the low bid, or submit deliberately high cover bids to create the appearance of competition, defrauds owners and is treated as a serious crime in both countries.
Under section 1 of the Sherman Act, bid rigging is a felony prosecuted by the Antitrust Division of the Department of Justice, punishable by fines of up to $100 million for corporations and $1 million for individuals, or twice the gain or loss, and imprisonment for up to 10 years. Federal and state agencies can also suspend or debar contractors involved in bid rigging, and false certifications of independent pricing, required by FAR 52.203-2, can lead to False Claims Act liability.
Owners and estimators should watch for warning signs in bid results: the same company always winning in a region, bids with identical errors or handwriting, unusually large gaps between the winning bid and the rest, or losing bidders becoming subcontractors to the winner. Joint ventures and teaming arrangements are lawful when disclosed and genuinely competitive, but they must be structured with care.
Electronic bidding and bid closing
Most public owners now accept bids electronically through procurement portals. Electronic bidding raises its own legal questions. A bid is generally late if the portal records it after the closing time, even by seconds, and owners usually treat closing times strictly to protect fairness. Bidders should upload well before closing, confirm receipt, and keep screenshots. When a portal fails, the bid documents and any addendum issued by the owner govern whether the closing is extended. Owners should state the official clock, the treatment of system failures and the format of acceptable signatures in the bid documents, and they should keep a complete electronic record of submissions and openings.
Bidders should also keep their own records of the bid period: the addenda received and acknowledged, the questions asked and the answers given, the subcontractor and supplier prices received and the time each arrived. If the award is challenged, or if a mistake or withdrawal becomes an issue, these records show what the bidder knew and relied on when it priced the work, and they are often the only evidence of what happened in the final hours before closing.
Common mistakes
MistakeAdding a qualification to a bid to protect against a risk.
InsteadUnless the documents allow it, a qualified bid can be non-compliant and rejected.
MistakeAssuming a privilege clause lets the owner do anything.
InsteadIt does not allow undisclosed criteria or acceptance of non-compliant bids.
MistakeDiscovering an error after closing and simply withdrawing.
InsteadCheck the withdrawal and mistake rules first; withdrawal may forfeit the bid security.
MistakeShopping subcontract prices after award.
InsteadBid shopping may breach depository rules, listing laws or obligations owed to subcontractors and damages trust.
MistakeFailing to record evaluation decisions.
InsteadWrite down how each bid was scored against each criterion; records defend an award.
Summary and key terms
- Bidding law protects owners' choice and bidders' expectation of a fair process.
- Federal sealed bidding awards to the lowest responsive, responsible bidder; negotiated procurement awards on best value.
- Non-responsive bids must be rejected on public work; bidders can protest unfair evaluations.
- Bid mistakes are corrected or excused only under strict conditions.
- Protest forums include the agency, GAO and the Court of Federal Claims.
- Promissory estoppel (Drennan) can bind subcontractors to their bids.
- Clear criteria, consistent evaluation and good records protect everyone.
- Call for tenders
- An owner's formal invitation to submit bids.
- Contract A
- In Canada, the preliminary contract formed when a compliant bid is submitted to a formal call for tenders.
- Contract B
- The construction contract formed when a bid is accepted.
- Responsive bid
- A bid that complies in all material respects with the bid documents.
- Responsible bidder
- A bidder with the capacity, resources and integrity to perform.
- Privilege clause
- A clause reserving the owner's right not to accept the lowest or any bid.
- Bid security
- A bond or deposit guaranteeing that a bidder will sign the contract.
- Bid shopping
- Using one bidder's price to pressure others into lower prices after bids are received.
- Bid protest
- A formal challenge to a procurement decision.
- Promissory estoppel
- A doctrine making a promise binding where another party reasonably relied on it.
Practice problems
Work each problem on paper first, then reveal the answer to check.
What makes a bid responsive?
Show answer
Compliance in all material respects with the invitation for bids.
What makes a bidder responsible?
Show answer
Financial capacity, experience, equipment, integrity and capacity to perform.
A unit price of $25 × 3,000 units is extended as $7,500. What is the correct extension?
Show answer
$75,000.
When is a bid mistake most likely to be excused?
Show answer
When it is obvious, clerical, promptly reported and proved, and the owner is not prejudiced.
Why should owners record evaluation scores?
Show answer
To show the evaluation followed the stated criteria if challenged.
Where can a disappointed federal bidder protest?
Show answer
The agency, the GAO or the Court of Federal Claims.
A sub's price was $400,000 and the replacement costs $445,000. What is the loss of bargain?
Show answer
$45,000.
Why can adding a qualification to a bid be risky?
Show answer
It may make the bid non-compliant.
What is bid security?
Show answer
A bond or deposit guaranteeing the bidder will sign the contract.
What does a subcontractor listing law do?
Show answer
It requires major subcontractors to be named in the bid and restricts substitution.
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