KNew York Court of Appeals (Cardozo, J.), 1921draftborradorunverifiedsin verificar

Jacob & Youngs, Inc. v. Kent

230 N.Y. 239, 129 N.E. 889 (1921)

The wrong brand of pipe inside the walls of a finished country house

In one lineEn una línea: A trivial, innocent deviation from a building contract is substantial performance; the owner must pay, less the difference in value, not the cost of replacement.Una desviación trivial e inocente en un contrato de obra es cumplimiento sustancial; el dueño debe pagar, menos la diferencia de valor, no el costo de reemplazo.
RuleRegla: Where a contractor's deviation from the specifications is minor and unintentional and the work as done is substantially what was promised, the promise to perform is a constructive condition that has been substantially satisfied; the owner's duty to pay is not discharged, and damages for the deviation are the difference in value unless the cost of completion is not grossly disproportionate.
Why this case is herePor qué está aquí este caso: The anchor case for Part V (conditions and justified nonperformance): an innocent, trivial deviation from the specifications is substantial performance, not a failure of a condition, so the owner must pay the price less the diminution in value, not the cost of tearing out the walls.
Procedural posturePostura procesal: Builder sued for the unpaid balance after the owner refused to pay because the plumbing was not Reading pipe; the trial court directed a verdict for the owner, the Appellate Division reversed, and the Court of Appeals affirmed for the builder.

Facts

Jacob & Youngs built a country residence for Kent for about $77,000. The specifications required wrought-iron pipe of Reading manufacture; through a subcontractor’s oversight, much of the pipe installed was of other brands of equal quality and price. The owner discovered it after the house was finished and the pipe encased in the walls, and demanded replacement; the builder refused and sued for the unpaid balance of about $3,500.

Procedural posture

Directed verdict for the owner; reversed by the Appellate Division; affirmed by the Court of Appeals, 4–3.

Issue

Whether the use of pipe of a different brand, equal in quality, was a failure of a condition to payment, and what the measure of damages was.

Holding

The builder substantially performed; the omission was trivial and innocent, so the owner’s duty to pay arose, subject to a deduction measured by the difference in value, which was nominal.

Reasoning

Cardozo distinguished conditions from promises: parties may make any term a condition, but absent clear language courts read promises as independent where the forfeiture from treating them as conditions would be grossly out of proportion to the breach. The deviation here was insignificant in purpose and effect. As to damages, the cost of replacement would be grossly and unfairly disproportionate to the good to be attained, so the measure is the difference in value.

Rule (own words)

Small, honest mistakes do not forfeit the price. The owner gets the money difference, and only the real cost of fixing it when that cost is not absurd.

What-ifs

The contract said: no payment shall be due unless Reading pipe is used throughout. Express condition; strict compliance required; no payment, though the owner may face restitution questions.
The builder knowingly substituted cheaper pipe: willful breach; no substantial performance; the owner may withhold payment.
The pipe was exposed and replacement cost $500: cost of completion is reasonable; damages are the $500.

Likely follow-upsRepreguntas probables

What is the difference between a condition and a promise here?

Had the parties made Reading pipe an express condition of payment, no payment would be due at all; Cardozo read the specification as a promise whose breach gives damages, with payment conditioned only on substantial performance.

Why difference in value and not cost of completion?

Replacing the pipe meant demolishing finished walls at a cost grossly disproportionate to the (nominal) difference in value between the two brands; the law avoids economic waste.

What did the dissent say?

That the owner bargained for Reading pipe and should get what he paid for; a buyer may be eccentric, and the court should not rewrite the contract.

Does willfulness matter?

Yes: a contractor who deliberately substitutes cannot claim substantial performance; the deviation here was an oversight of a subcontractor.

substantial performance constructive conditions of exchange material breach vs. partial breach cost of completion vs. diminution in value diminution in value

Compare withComparar con: Kingston v. Preston (extends), Peevyhouse v. Garland Coal & Mining Co. (companion)

AssignedAsignado: 2026-11-05

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