Plаintiff brought this action against defendant, The Board of Trustees of the Montecito Union School District (hereinafter referred to as “Board of Trustees") and the individual members thereof to reform *814 a school building construction contract, after full performance by plaintiff and defendants, to recover for a deficiency in the bid and contract price resulting from plaintiff’s сlerical error in making his cost computations. Plaintiff had judgment and defendants appeal.
The facts are simple and without substantial conflict. The Board of Trustees employed Chester Car jola, a licensed architect, to prepare plans and specifications for a new school building at Montecito, California. Plaintiff, a licensed contractor, in response to an advertisement for bids on the building, prepared and submitted a total bid of $144,800. In computing his bid, plaintiff used a work sheet on which he entered the figure of $12,000 for the plumbing subcontract in one column, but upon extending this figure to the totals column he entered the figure of $1,200, which latter figure was used in computing his total bid, thus causing his bid to be $10,800 less than if he had extended the figure of $12,000 into the totals cоlumn. When the bids were opened before the Board of Trustees, plaintiff was the low bidder, the next higher bid being $158,370, the other bids ranging upward to $177,758. The discrepancy between the plaintiff’s bid and the other bids led the plaintiff and the Board of Trustees to suspect at that time that the plaintiff had made some error. Plaintiff immediately checked his figures but found no error and the following morning advised the architect that no mistake had been found and that he, the plaintiff, was ready to sign the contract at the bid price, which he did on March 2, 1954, no error in his computations having been discovered at that time. When the contract was signed both the plaintiff and the Board of Trustees still suspected that there was some mistake in plaintiff’s bid but neither knew what the mistake was or the amount thereof. Shоrtly thereafter and before commencement of the work, plaintiff discovered his mistake and immediately advised the architect that the mistake had been discovered, the amount of the mistake and how it had occurred. The architect advised plaintiff that the matter would be called to the attention of the Board of Trustees in an effort to obtain relief for plaintiff from his mistake. Plaintiff himself did not communicate with the Board of Trustees as to the discovery of his mistake or the amount thereof. A few days later and still prior to the commencement of the work, the architect advised plaintiff that the matter had been taken up with the Board of Trustees and, as found by the court, “that *815 defendants were favorably inclined toward correcting said cоntract price to relieve plaintiff from said mistake, so that plaintiff should not be damaged thereby” and the architect further advised plaintiff that he should proceed with performance and that, upon completion of the work, the defendants would see to it that the plaintiff suffered no loss as a result of his mistake. In reliance upon this advice from the architect, plaintiff commenced and completed performance under the contract and was paid the contract price. The court found substantially in accordance with the foregoing statement of facts and additionally found that the architect “was the agent of defendants in connection with the construction work . . . and in connection with the negotiation of thе contract therefor” and that the defendants desire “if legally possible, to pay plaintiff the sum of $10,800,” the difference between his actual and intended bid price. The court concluded that “defendants are estopped to refuse payment to plaintiff of the sum of $10,800”; that plaintiff is entitled to judgment reforming the contract so as to increase the amount to covеr the mistake of $10,800 and that the plaintiff is entitled to judgment against the defendants for $10,800 with interest and costs. Judgment was entered accordingly.
As principal grounds for reversal, defendants contend: (1) that the court erred in granting reformation of the building contract, and (2) that the court erred in concluding that the defendants were estopped from denying payment of $10,800 to the plaintiff.
In the absence of estoppel, it is manifest that the pleadings, the evidence and the findings will not support the conclusion and judgment for reformation of the contract between plaintiff and defendants. It is a presupposition to the granting of reformation that there was a valid agreement made between the parties which the instrument they executed failed to express cоrrectly, In the case at bar there is neither allegation nor proof that either the plaintiff or the defendants knew, before or at the time the contract was executed, the amount of plaintiff’s mistake or how it was made. Nor is it alleged or established that the defendants ever agreed to any price other than the price set forth in the contract. The most that was established was that the plaintiff and the defendants each suspected some mistake. Notwithstanding such suspicion, the only common intention between the parties at the time of contracting was that the plaintiff *816 agreed to perforin the work and the defendants agreed to pay therefor the amount as set forth in the contract.
In
Lemoge Electric
v.
County of San Mateo,
“ Reformation may be had for a mutual mistake or for the mistake of one party which the other knew or suspected, but in either situation the purpose of the remedy is to make the written contract truly express the intention of the parties. Where the failure of the written contract to express the intention of the parties is due to the inadvertence of both of them, the mistake is mutual and the contract may be revised on the application of the party aggrieved. (See e.g.
Hills
v.
Schulba,
The crucial question in this appeal involves the application of the doctrine of estoppel against a public body in connection with bidding statutes for public work. Predicated upon the finding that upon discovery of the plaintiff’s mistake after the contract was signed, the plaintiff proceeded with performance of the work in reliance upon the representation of the architect that defendants were favorably inclined toward correcting the contract price and upon comрletion of the work defendants “would see to it that plaintiff suffered no loss as a result of said mistake,” the trial court concluded as a matter of law that the defendant Board of Trustees was estopped from refusing to make payment to the plaintiff of an amount over and above the bid and contract price.
The only authority of a board of school trustees to let
*818
contracts involving an expenditure for more than $1,000 is found in Education Code, section 18051, which provides: “The governing board of any school district shall let any contracts involving an expenditure of more than one thousand dollars ($1,000) for work to be done or for materials or supplies to
be
furnished, sold, or leased to the district, to the lowest responsible bidder who shall give such security as the board requires, or else reject all bids. ...” Although the sеction does not specifically state that the contracts covered thereby shall be let to the lowest responsible bidder at the bid price, such a meaning is obvious, for otherwise the section would be meaningless. In the instant case there was no contention that the plaintiff submitted any bid other than the bid accepted by the Board of Trustees and which resulted in the contract between the parties. Having awarded the contract to the plaintiff at his bid price, any other contract, promise or agreement with the plaintiff to pay more than his bid and contract price would be in violation of section 18051 and hence in excess of the power of the Board of Trustees. Neither in said section nor elsewhere is there any statutory authority permitting the Board of Trustees to modify a contract which has been let in the event of the discovery of an error in the bid upon which the contract was awarded. A board of school trustees is an administrative agency created by statute and invested only with the powers expressly conferred by the Legislature
(Grigsby
v.
King,
The application оf the doctrine of estoppel to public bodies is well summarized in
County of San Diego
v.
California Water etc. Co.,
Here we are directly concerned with strong considerations of public policy. “The competitive bidding requirement is founded upon a salutary public policy declared by the legislature to protect the taxpayers from fraud, corruption and carelessness on the part of public officials and the waste and dissipation of publiс funds.”
(Miller
v.
McKinnon,
Plaintiff has assiduously reviewed the law of estoppel as applied against public or governmental bodies and frankly concedes that many of the earlier cases, which apply this doctrine to public bodies in much the same manner as to private individuals, have been overruled by
Miller
v.
McKinnon, supra,
For the reasons stated, we conclude that the findings of fact do not support the conclusions of law that the defendants are estopped from refusing payment to plaintiff of $10,800 and that plaintiff is entitled tо payment of said sum, and therefore the court erred in rendering judgment accordingly. A retrial of the issues of fact is unnecessary; hence the judgment is reversed, with directions to vacate the conclusions of law and judgment, to make new conclusions of law consistent with this opinion, and to enter judgment in favor of defendants with costs.
Fox, P. J., and Ashburn, J., concurred.
Respondent’s petition for a hearing by the Supreme Court was denied April 23, 1958. Shenk, J., and Schauer, J., were of the opinion that the petition should be granted.
Notes
Assigned by Chairman of Judicial Council.
