Braley, J.
The refusal of the defendant’s first request, asking •for a ruling that “The original contract was.conclusively settled by the making and acceptance of the final certificate and payment,” as well as the refusal to instruct the jury “that upon all the evidence the architect’s final certificate was in any way final and conclusive upon the parties, or that the plaintiff could not recover on the principal contract because of the issuance of the architect’s final certificate and payment thereunder,” shows no error of law.
The defendant relies upon the clause of the contract which provides that “no certificate given or payment made under this contract, except the final certificate or final payment, shall be conclusive evidence of the performance of this contract, either wholly or in part, and that no payment shall be construed to be an acceptance of defective work or improper materials.” But the jury could find on conflicting evidence that the plaintiff never agreed to a substituted performance as to the waterproofing to which the architect testified. A further finding also would have *78been warranted that no final certificate was ever given or intended by the architect to be given in accordance with the terms of the original contract, under which he was to act as if he were an arbitrator. The auditor moreover has found, and there is no evidence to contradict his report, that “at the time the certificate of final payment was given the defendant had .not performed the work” or furnished the “materials required by the specifications; that the architect could easily have ascertained this, and was negligent in not doing so.”
The present case, therefore, is plainly distinguishable from Hathaway v. Stone, 215 Mass. 212, and the plaintiff is not estopped from contending that, the building not having been completed in accordance with the specifications, he is entitled to 'damages notwithstanding the architect’s certificate of final payment with which he has complied. Handy v. Bliss, 204 Mass. 513. And the jury on the auditor’s report would be warranted in finding “that the work and material which had not been furnished and performed consisted of the furnishing of an inadequate heating apparatus . . . omissions to waterproof the cellar, . . . and a shortage in the height of the sheathing.” It was not contended by the defendant that the basement had been made waterproof as called for by the contract, and, whether the plaintiff as the architect testified agreed to a substituted performance, was as we have said for the jury.
The third request, for a ruling that, under the declaration as framed the plaintiff could not recover “on the so called guarantee” was inappropriate. While the contract contained a clause that the contractor at his own expense is to make good “any defects or faults in his work, occurring from poor workmanship or materials, which may appear within twelve months after completion of the building,” neither the substituted nor amended declaration contains a count on the guaranty, and on the record the parties and the judge must have understood that the plaintiff made no claim under, it;
It is stated in the bill of exceptions that the court “charged the jury correctly and fully as to the law on all branches of the case,” unless the first request and the second request should have been given. The plaintiff under the second count having asked for damages to “his dry goods and other merchandise” caused by the defendant’s *79failure'“to put up a building that shall be waterproof,” the judge by the second request was asked to rule, that, even if he knew the store was to be used for the storage of goods, the defendant “ would not be liable for damage thereto because the defendant’s act in omitting the waterproofing would not be the proximate cause of such damage.” The refusal to give this ruling is the remaining question. It is settled by Weston v. Boston & Maine Railroad, 190 Mass. 298, 299, and Hanson & Parker, Ltd. v. Wittenberg, 205 Mass. 319, 327, 328, that, although the contract contains no reference to the use which the plaintiff intended to make of the building, evidence is admissible to show knowledge by the parties of the circumstances on the basis of which the contract was made. And, “as damages are assessed as compensation, the amount awarded should be such as the parties at the time of the making of the contract are supposed to have contemplated naturally would follow from the probable consequences of a breach.” The auditor-found “that the defendant knew that said basement was to be used for the storage of dry goods and merchandise,” and the jury could find on the evidence as the auditor further found, “that the plaintiff’s goods and merchandise in the basement became damp and mouldy due to the absence of waterproofing.” The defendant relies on Hadley v. Baxendale, 9 Exch. 341, where in an action against a common carrier special damages were sought for loss ,of profits, caused by the carrier’s unreasonable delay in delivering a broken mill shaft to be used by the consignee as a pattern for the making of a new one, but which were denied, as decisive of the plaintiff’s right to recover. But, as pointed out in Gagnon v. Sperry & Hutchinson Co. 206 Mass. 547, 555, citing among other cases Hadley v. Baxendale, supra, the loss of prospective profits may be allowed if-the loss likely to result from non-performance is within the contemplation of the parties, and “the profits are not so uncertain or contingent as to be incapable of reasonable proof.” The general question also was considered in Leavitt v. Fiberloid Co. 196 Mass. 440, 444-449, with a very full review of English and American cases, which without further citation abundantly show that recovery may be had where, as in the present case, the jury could find that the plaintiff’s damages were “such as reasonably might be supposed to have been within the contemplation of the parties if at the time” of making the *80contract “they had taken thought of the consequences likely to ensue” if the waterproofing as specified were omitted. The ^exceptions therefore should be overruled, and it is
So ordered.