Drennan v. Star Paving Co.

51 Cal. 2d 409, 333 P.2d 757 (1958)

Supreme Court of California · 1958

Rule

A subcontractor's bid that a general contractor reasonably relies upon in submitting its prime bid becomes binding under R2d § 87(2) / R2d § 90. The subcontractor cannot revoke after the general contractor has used the bid, even though the prime contract has not yet been awarded.

Option contract
Promissory estoppel in bidding
Subcontractor bids
R2d § 87(2)

Learning outcomes

By the end of working with this case, you can:

apply R2d § 87(2) and R2d § 90 to a subcontractor-bidding fact pattern, holding the subcontractor's offer open through reliance even without a formal option contract.
distinguish The Drennan rule (subcontractor bound by general's reliance) from the symmetric situation (general not bound to use the sub's bid): the doctrine is one-way.
evaluate Whether the asymmetry is principled (the general's reliance is foreseeable and necessary; the sub knows it) or unfair (subs bear all the bidding risk).

Facts

Drennan, a California general contractor, was preparing a bid for the Monte Vista School District. Star Paving was one of several subcontractors that submitted bids to him by telephone for the paving portion. Star’s bid was substantially lower than the others. Drennan used Star’s bid in computing his prime bid and listed Star as the paving subcontractor as required by the bidding rules. Drennan was awarded the prime contract. The next day, Star told Drennan it had made a computational error and could not perform at the bid price. Drennan tried but could not find another sub at a comparable price and ended up paying significantly more. He sued Star for the difference.

Holding

The California Supreme Court, in an opinion by Justice Traynor, held Star bound. Drennan’s reasonable reliance on the bid in preparing his prime bid made the sub-bid irrevocable for a reasonable time after the prime contract was awarded. The general contractor recovered the difference between Star’s bid and the substituted paving cost.

Reasoning

Traynor framed the analysis in R2d § 90 terms: Star should reasonably have expected that Drennan would rely on its bid in preparing the prime; Drennan did rely; injustice could be avoided only by holding Star to the bid for a reasonable time. Traynor declined to find a bilateral contract: there was no acceptance: but treated the bid as creating an option binding through reliance. The reliance was foreseeable: subs know that generals incorporate their numbers; subs benefit from the chance to bid; the system requires sub-bids to be reliable enough to use. The asymmetry (general not similarly bound) is justified by the structural difference: the general has to commit to one number for the prime bid, while the sub has not yet committed to anything.

Why it matters

Drennan established the modern American rule on subcontractor-bid revocability and is the leading authority for the proposition codified in R2d § 87(2): an offer that the offeror should reasonably expect to induce action of a substantial character, and that does so, is binding as an option to the extent necessary to avoid injustice. The case anchors classroom discussions of how promissory estoppel operates not only as a substitute for consideration but as a stand-alone basis for holding an offer open. It is taught alongside Hoffman v. Red Owl and R2d § 90 as one of the canonical reliance cases.

The trap

Students treat a bid as a freely revocable offer because no consideration has yet passed. They miss that R2d § 90 reliance, not bargained-for consideration, holds the offer open. A second trap: students assume symmetry (if the sub is bound, the general must be bound to use the sub) and resist Traynor's asymmetric outcome.

The operational intuition the case is designed to break. Naming the trap is what the Socratic exchange is for.

Socratic ladder

The professor's scaffold for the in-class exchange. Each rung is a stage; the questions are scripted prompts, not the punchline.

Surfacing · 60 sec

Q. You are a general contractor preparing a million-dollar bid for a school district. Subcontractors phone you their numbers the morning of your bid. You plug the lowest paving number into your prime bid, win the prime, and call the paving sub to accept. The sub says: 'Sorry, I miscalculated; I am out.' Operationally, can the sub walk?

Look for: The instinct splits. Some say yes, no contract had formed; the bid was just a proposal. Others say no, the general relied. Students often miss that there has been no acceptance yet.

Holding · 60 sec

Q. What did the California Supreme Court do with the general contractor's claim against Star Paving?

Look for: Star was bound. Drennan's reasonable reliance on the bid in preparing his prime bid made the sub-bid irrevocable for a reasonable time after the prime contract was awarded. Drennan recovered the difference between Star's bid and the cost of replacement paving.

Reasoning · 150 sec

Q. There was no acceptance when Star tried to revoke. No bilateral contract had formed. Yet Traynor holds Star to the bid. On what theory?

Trap: Students treat the case as a routine offer-acceptance problem and conclude Star could revoke until acceptance. They miss the reliance route. A second trap: they read the case as fully bilateral once Drennan listed Star in the prime bid; the court is careful not to find acceptance, but to find an option.

Board: R2d § 87(2): foreseeable substantial reliance on an offer creates an option contract.

Push back: There is no acceptance. There is no consideration paid for keeping the bid open. What does the general have that justifies holding the sub anyway? Quote Traynor's reasoning, not his result.

Push to: R2d § 87(2), drawing on R2d § 90. An offer that the offeror should reasonably expect to induce action of a substantial character, and that does so induce, becomes binding as an option to the extent necessary to avoid injustice. The sub knew generals incorporate sub-bids; Drennan did incorporate it; injustice could be avoided only by holding the bid open for a reasonable time.

Hypothetical · 90 sec

Vary. Vary one fact. Star calls Drennan two hours after the bid: 'We made a math error. The real number is $13,000, not $7,000. We are revoking before you submit.' Drennan submits anyway using $7,000, wins the prime, then tries to hold Star. Same result?

Point: The variation tests whether the reliance was reasonable. Once Star communicated a clear pre-submission revocation, Drennan's continued use of the original number is not foreseeable reliance the law should protect. The element doing the work is the timing of revocation and the reasonableness of the general's reliance in light of what he knew.

Integration · 75 sec

Q. You have used a price quote from a vendor to plan your own work. When could the vendor walk on that quote? What did you do that should hold the vendor in place?

Land: Drennan establishes the modern American rule on subcontractor-bid revocability and is the leading authority codified in R2d § 87(2). Path-dependence probe: the rule is one-way. The sub is bound; the general is free to shop the sub-bid after winning the prime. Is the asymmetry principled? Traynor argues yes because only the general must commit to a number for the prime. Critics call it subcontractor exploitation. What alternative rule could the common law have chosen?

Drennan v. Star Paving Co., 51 Cal. 2d 409, 333 P.2d 757 (1958).