The rule
An unmistakable express condition ordinarily requires literal occurrence; substantial performance alone does not satisfy it. Identify whether it conditions formation or performance, and test any separate ground for excuse. Oppenheimer recognizes possible excuse including waiver, breach or disproportionate forfeiture, with a limit where occurrence is material to the exchange.
Elements
- Identify the conditional event and the duty or formation it controls.
- Determine whether the agreed event occurred in the required time and form.
- If not, establish a supported independent excuse rather than substantial compliance alone.
Exceptions and limits
- Doubtful language may be read as a promise or constructive condition.
- Forfeiture-based excuse is limited where occurrence was material to the agreed exchange.
- A satisfaction condition may require good-faith judgment, as in Mattei’s commercial leases.
When the issue arises
Identify the event and the dependent obligation. Written consent, approval and satisfaction language may govern formation of the agreement or a duty under an agreement already in place, so an answer that simply calls the provision a condition must still explain whose obligation depends on what, in which form and by which deadline. Test each requirement. A timely oral message is not automatically timely delivery of a required writing. After nonoccurrence, examine the particular ground of excuse supported by the facts. Substantial performance, waiver, estoppel and forfeiture are not interchangeable names for a general sense that enforcing the wording would be harsh. Suppose a landlord signs approval before Friday but the specified recipient receives the document on Monday: the signature answers whether approval existed, while the later receipt answers a different delivery requirement whose nonoccurrence still needs any claimed excuse under the governing rule and the particular agreement. Those dates serve different functions.
Formation and performance are different questions
Oppenheimer made timely delivery of the landlord’s written consent a condition to the proposed sublease. Oral notice on the deadline did not supply the required writing. The jury had rejected waiver and estoppel, and the plaintiff had not established a forfeiture basis for relief.
Mattei involved an existing land-sale agreement whose buyer’s performance depended on obtaining satisfactory leases. The court rejected the argument that the condition postponed every possibility of a contract until the buyer announced satisfaction. Read the whole agreement before deciding which kind of condition is involved.
A promise is not automatically an express condition
A specification can be a promise about performance without making literal compliance a condition of every right to payment. Oppenheimer explains a preference for that reading when language is doubtful, especially where an express-condition interpretation risks forfeiture. Clear conditional language changes the analysis.
Jacob & Youngs addressed a construction deviation and the disproportionate burden of replacing pipe. It expressly reserved a different case in which the parties clearly made each specification a condition of recovery. Do not extend its substantial-performance analysis across that distinction.
An excuse is a separate legal ground
Oppenheimer recognizes waiver, breach and forfeiture as possible grounds for excusing nonoccurrence. They require facts supporting the particular ground. Saying the performance was close enough does not establish one of them.
The opinion discusses disproportionate forfeiture subject to the limit that occurrence must not be a material part of the agreed exchange. Its own plaintiff showed no forfeited interest or benefit conferred on the other party, and had rent protection from another developer. The court therefore did not resolve a case involving loss of an existing valuable leasehold.
Satisfaction does not mean unrestricted choice
Mattei distinguishes objective assessment of commercial quality or mechanical fitness from matters requiring judgment. Its own commercial leases involved many interrelated considerations, so the court applied good-faith judgment. A commercial setting alone did not force an objective standard.
The good-faith obligation made the satisfaction condition a real limit on the buyer's discretion. It did not guarantee that every lease would satisfy the buyer or decide a final damages amount. Distinguish genuine dissatisfaction with the relevant performance from a desire to escape the agreement.
A simple fact pattern
Facts. A proposed sublease is expressly ineffective unless the recipient receives written landlord consent by July 1. On July 1 the proposing party reports consent by telephone, but delivers the writing later. No waiver, interference or forfeiture is established.
Analysis. Identify formation as the conditional event and delivery of writing as the required act. The phone call does not satisfy that act, and substantial performance alone supplies no excuse under Oppenheimer. A different result requires a supported independent ground rather than a conclusion that the delay was small.
A harder fact pattern
Facts. A buyer signs a land agreement making the buyer’s performance dependent on satisfactory leases for a planned shopping center. The seller argues that this gives the buyer an unrestricted choice and therefore no contract exists. The buyer claims the leases are unsatisfactory solely because it now prefers another project.
Analysis. Mattei rejects the automatic no-contract argument: the agreement can exist while the duty to complete is conditional. But the buyer’s lease judgment must be exercised in good faith. A preference for another project does not by itself show dissatisfaction with the leases, so analyze the actual lease concerns instead of treating the condition as a free cancellation right.
Leading cases
Compared with nearby doctrines
| Doctrine | How it differs |
|---|---|
| Substantial performance | Constructive conditions may tolerate a minor deviation; an unmistakable express condition requires a separate occurrence or excuse analysis. |
| Consideration | A satisfaction condition constrained by good faith does not necessarily leave performance to unrestricted choice. |
Common exam mistakes
- Treating every promise or specification as an express payment condition.
- Replacing required written delivery with oral notice merely because notice was timely.
- Assuming substantial performance eliminates the need to establish an excuse.
- Ignoring the material-part limit on forfeiture-based excuse.
- Applying an objective satisfaction test solely because the deal is commercial.
Practice questions
A letter states that no sublease will exist unless written landlord consent is delivered by June 1. Only oral notice arrives by that date; no waiver, estoppel or forfeiture ground is established. Under Oppenheimer, which statement is correct?
Answer and explanations
Correct answer: C.
Authority: Oppenheimer: express conditions, substantial performance and excuse; Mattei: conditional performance and good-faith satisfaction; Jacob & Youngs: constructive conditions and reserved express-condition issue
- A. Wrong. The condition specifies the form and delivery, not merely knowledge of consent. Oppenheimer rejected oral notice as substantial compliance on its record.
- B. Wrong. A condition and a promise have different functions. This clause concerns formation of the sublease, not simply damages for a broken promise.
- C. Correct. An unmistakable express condition ordinarily requires literal occurrence. A supported independent excuse could matter, but the stem excludes those grounds.
- D. Wrong. Waiver requires supporting conduct or agreement. The mere fact that a deadline was missed establishes no waiver.
More contracts practice questions and essays
Quick answers
Does almost meeting a written-consent deadline satisfy an express condition?
Not by substantial performance alone. Oppenheimer required timely delivery of the writing and treated waiver, estoppel and forfeiture as separate questions.
Does a failed condition necessarily mean someone breached?
No. Identify whether the event was also promised. Nonoccurrence and breach are different questions, and some conditions concern formation rather than duties under an existing contract.
Can an express condition ever be excused?
Yes, on a supported independent ground. Oppenheimer discusses waiver, breach and disproportionate forfeiture, while preserving the limit for a condition material to the exchange.
Why did Mattei use good-faith judgment for commercial leases?
The leases required evaluation of many interrelated factors rather than a simple mechanical-quality test. The commercial setting did not erase that judgment component.