UBE Conditions
Last updated: May 2, 2026
Conditions questions are one of the highest-leverage areas to study for the UBE. This guide breaks down the rule, the elements you need to recognize, the named traps that catch most students, and a memory aid that scales to test day. Read it once, then practice the same sub-topic adaptively in the app.
The rule
A condition is an event, not certain to occur, that must occur (unless its non-occurrence is excused) before performance under a contract becomes due. Restatement (Second) of Contracts §224. Express conditions are created by the parties' language and must be strictly satisfied; constructive conditions of exchange (implied by the court to order performance in bilateral contracts) require only substantial performance. Non-occurrence of a condition discharges the obligor's duty unless the condition is excused by waiver, estoppel, prevention/hindrance, impossibility, or forfeiture.
Elements breakdown
Express Condition
A condition explicitly stated in the contract that must be strictly performed before the other party's duty arises.
- Event not certain to occur
- Created by parties' language ("if," "on condition that," "provided that")
- Must occur before duty to perform arises
- Strict compliance required (no substantial performance)
Common examples:
- Insurance policy: notice within 30 days
- Sale contingent on buyer obtaining financing
- Architect's certificate as condition to payment
Constructive (Implied-in-Law) Condition of Exchange
A condition imposed by the court to order performance in a bilateral contract; satisfied by substantial performance.
- Bilateral contract with non-simultaneous performances
- Court orders performances based on time required
- Substantial performance triggers other party's duty
- Material breach excuses other party's performance
Condition Precedent
An event that must occur before a contractual duty to perform arises.
- Event not certain to occur
- Must occur before duty becomes due
- Burden of pleading and proof on party seeking enforcement
Common examples:
- Buyer obtaining mortgage approval
- Seller's delivery of marketable title
- Owner's approval of work
Condition Subsequent
An event whose occurrence discharges an existing duty to perform.
- Duty already exists and is performable
- Specified event later occurs
- Occurrence extinguishes the existing duty
- Burden of proof on party asserting discharge
Condition Concurrent
Mutually dependent conditions that must be performed simultaneously, each party tendering performance.
- Performances capable of simultaneous exchange
- Each party's tender is condition to other's duty
- Neither party in breach until other tenders
Common examples:
- Cash sale: buyer tenders payment as seller tenders goods
- Closing of real estate transaction
Substantial Performance
Performance that, while not perfect, satisfies the essential purpose of the contract; doctrine applies to constructive conditions only.
- Performance covers essential purpose
- Deviation not material or willful
- Damages can compensate for shortfall
- Does NOT apply to express conditions
Waiver
Voluntary relinquishment of a known right; can excuse a condition.
- Knowledge of the condition
- Voluntary intent to relinquish it
- Communication or conduct showing waiver
- Material conditions cannot be waived without consideration or reliance
Estoppel (to Assert Condition)
Party prevented from asserting non-occurrence of condition where the other party reasonably relied to their detriment.
- Representation by words or conduct
- Reasonable reliance by other party
- Detriment from the reliance
- Injustice avoidable only by enforcement
Prevention / Hindrance
Obligor's wrongful interference with occurrence of condition excuses the condition.
- Obligor under duty of good faith and fair dealing
- Obligor's conduct causes non-occurrence
- Conduct contrary to duty implied in contract
- Condition excused; obligor's duty arises
Excuse for Forfeiture
Court excuses non-occurrence of a non-material condition to avoid disproportionate forfeiture.
- Non-occurrence would cause disproportionate forfeiture
- Condition was not a material part of agreed exchange
- Excuse does not deprive obligor of substantial benefit
- Restatement (Second) §229
Common patterns and traps
The Express-vs-Constructive Trigger
The threshold issue on every conditions question is whether the condition was created by the parties' words (express) or imposed by the court to order performance (constructive). Express conditions demand strict performance; constructive conditions require only substantial performance. The trigger words "if," "on condition that," "provided that," "unless," and "only when" signal an express condition, while sequencing language like "upon completion" usually creates a constructive condition.
A wrong choice will say a party substantially performed and is therefore entitled to recover, when the contract used express-condition language and the deviation defeats strict compliance.
The Promise-Condition Confusion
A single clause can be a promise (breach gives damages), a condition (non-occurrence discharges the other side's duty), or both. Courts prefer to construe ambiguous language as a promise, not a condition, to avoid forfeiture. Distractors flip this: they treat what is really a promise as a strict condition, or treat a true express condition as a mere promise so substantial performance suffices.
An answer that says "the duty is discharged because the obligation was not performed exactly" when the language was promissory, or that says "only damages are available" when the language was clearly conditional.
The Excuse Override (WHEEP)
Even when a condition has not occurred, the obligor's duty may still arise if the condition was waived, the obligor is estopped, the obligor prevented or hindered occurrence, or excusing the condition is necessary to avoid disproportionate forfeiture. Bar problems frequently bury an excuse fact in the middle of the vignette — the obligor refused to permit inspection, told the obligee not to bother performing, or accepted late performance multiple times.
A wrong choice that says "the duty is discharged because the condition didn't occur" while ignoring that the obligor's own conduct prevented occurrence.
The Satisfaction-Clause Standard
"To my satisfaction" clauses are tested on whether subjective good faith or an objective reasonable-person standard governs. The default is subjective good faith for matters of personal taste (paintings, tailored clothing) and objective reasonableness for commercial quality, fitness, or mechanical utility. The trap is applying the wrong standard to the subject matter.
An answer that lets the obligor refuse payment for any reason at all when the contract calls for objective commercial quality, or vice versa.
The Forfeiture-Avoidance Rescue
Restatement §229 lets courts excuse a non-material express condition to avoid disproportionate forfeiture. Bar fact patterns set this up by having a party fail a small technical condition (notice 31 days late instead of 30) after substantially completing valuable performance. Candidates miss this by mechanically applying strict compliance to express conditions without remembering the §229 escape valve.
A wrong choice that mechanically discharges the duty for a one-day-late notice when the obligor suffered no prejudice and the obligee would lose substantial value.
How it works
Conditions sequence and qualify the duties of the parties — they answer "who has to perform first?" and "what triggers my obligation?" The single most important move on this topic is identifying whether the condition is express or constructive, because that determines the standard. Suppose Patel hires Liu Construction to remodel a kitchen for $80,000, with payment due "on completion of all work to Patel's satisfaction." If "to Patel's satisfaction" is express, Patel can refuse payment for a minor deviation (subject to a good-faith requirement when satisfaction is objectively measurable). But the constructive condition — that Liu finish the work before Patel pays — requires only substantial performance. So if Liu installs the wrong cabinet handles but everything else conforms, Liu has substantially performed the constructive condition and is entitled to the contract price minus damages for the handles. Always ask: was the condition created by the parties' language (express, strict) or imposed by the court to order exchange (constructive, substantial performance)? Then check the excuse doctrines — waiver, estoppel, prevention, and forfeiture each rescue a party who would otherwise lose for a technical non-occurrence.
Worked examples
Is Reyes's duty to pay excused by the absence of the architect's written certificate?
- A Yes, because the certificate was an express condition precedent to payment and Chen failed to satisfy it.
- B Yes, because the architect — not Reyes — refused to issue the certificate, so Reyes is not at fault.
- C No, because the architect's refusal to issue a certificate that he admitted was warranted constitutes prevention or excuses the condition to avoid disproportionate forfeiture. ✓ Correct
- D No, because Chen substantially performed the underlying work, which satisfies the express condition.
Why C is correct: The architect's certificate is an express condition precedent ("Payment shall be due upon…"), so strict compliance is normally required. However, where the architect refuses to issue a warranted certificate in bad faith, courts excuse the condition under prevention/hindrance principles or to avoid disproportionate forfeiture under Restatement (Second) §229 — Chen would otherwise lose $45,000 for a clerical formality the architect admitted was deserved. The condition is excused; Reyes must pay.
Why each wrong choice fails:
- A: This applies the strict-compliance rule mechanically without considering the excuse doctrines. When non-occurrence results from bad-faith refusal by an interested third party, courts excuse the condition. (The Express-vs-Constructive Trigger)
- B: Reyes is bound by her chosen architect's bad-faith conduct. The architect acts as Reyes's agent for purposes of certification, so his improper refusal does not insulate Reyes from her duty. (The Excuse Override (WHEEP))
- D: Substantial performance does NOT satisfy an express condition. Although the work itself substantially performed the constructive condition, the certificate was a separate express condition; the right answer rests on excuse, not substantial performance. (The Express-vs-Constructive Trigger)
Is Patel entitled to return of the earnest money deposit?
- A No, because financing contingencies are construed against the buyer, who must accept any commercially reasonable offer.
- B No, because Patel's refusal to accept the 7.25% offer was a breach of the implied duty of good faith.
- C Yes, because the express condition specified 7.0% and Patel made good-faith efforts to obtain financing at that rate. ✓ Correct
- D Yes, because real estate contracts are governed by the UCC, which excuses performance whenever financing is unavailable.
Why C is correct: The financing contingency is an express condition requiring a rate "not exceeding 7.0%." Patel applied to multiple lenders and could not obtain that rate, so the condition failed. Express conditions require strict compliance — Patel was not obligated to accept a higher rate, and good-faith effort to satisfy the condition is all that was required. The condition having failed without bad faith, Patel is entitled to the deposit's return.
Why each wrong choice fails:
- A: This invents a construction rule that does not exist. Express financing conditions are interpreted by their terms; they are not automatically construed against the buyer, and there is no requirement to accept a commercially reasonable but non-conforming offer. (The Express-vs-Constructive Trigger)
- B: Good faith requires reasonable efforts to satisfy the condition, not acceptance of a non-conforming offer. The 7.25% rate exceeded the contractual ceiling, so refusing it cannot constitute bad faith. (The Promise-Condition Confusion)
- D: The UCC Article 2 governs sales of goods, not real estate. Real estate transactions are governed by the common law of contracts, which strictly enforces express conditions.
What is Garcia's most likely outcome in a suit for the contract price?
- A Garcia loses, because the express condition required delivery 14 days before the event and one-day lateness is non-occurrence.
- B Garcia recovers, because Nakamura's coordinator approved the menu without objection, waiving or estopping reliance on the timing condition. ✓ Correct
- C Garcia recovers, because the menu-timing requirement was a constructive condition satisfied by substantial performance.
- D Garcia recovers in restitution for $18,000 only, because non-occurrence of the express condition prevents contract recovery.
Why B is correct: The 14-day notice requirement is an express condition, so substantial performance does not satisfy it. However, when Nakamura's coordinator accepted the late menu without objection and Garcia proceeded to perform in reliance, Nakamura waived the condition (or is estopped from asserting it). Even setting waiver aside, Restatement §229 would excuse the condition to avoid disproportionate forfeiture — Garcia would lose $25,000 for a one-day technicality causing no prejudice. Garcia recovers the full contract price.
Why each wrong choice fails:
- A: This mechanically applies strict compliance without considering the excuse doctrines. Waiver, estoppel, and forfeiture-avoidance under §229 all defeat this rigid approach where the obligor accepted late performance without objection. (The Express-vs-Constructive Trigger)
- C: Substantial performance applies only to constructive conditions. The 14-day deadline used express-condition language tied to payment, so this answer misclassifies the condition and applies the wrong standard. (The Express-vs-Constructive Trigger)
- D: Restitution is a fallback when contract recovery fails. Because Garcia recovers on the contract via waiver/estoppel/forfeiture-avoidance, the full $25,000 is available — not the lower restitutionary measure. (The Forfeiture-Avoidance Rescue)
Memory aid
"WHEEP" excuses a condition: Waiver, Hindrance, Estoppel, Excuse-of-forfeiture, Prevention. For express vs. constructive: "Express = Exact; Constructive = Close enough."
Key distinction
Express conditions demand strict compliance — substantial performance does NOT satisfy an express condition. Constructive conditions of exchange require only substantial performance. The bar tests this line constantly: a contract clause beginning "if," "on condition that," or "provided that" creates an express condition, and 99% performance is still non-occurrence.
Summary
A condition is an event that must occur before performance is due; express conditions require strict compliance, constructive conditions of exchange require only substantial performance, and either may be excused by waiver, estoppel, prevention, or to avoid disproportionate forfeiture.
Practice conditions adaptively
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Start your free 7-day trialFrequently asked questions
What is conditions on the UBE?
A condition is an event, not certain to occur, that must occur (unless its non-occurrence is excused) before performance under a contract becomes due. Restatement (Second) of Contracts §224. Express conditions are created by the parties' language and must be strictly satisfied; constructive conditions of exchange (implied by the court to order performance in bilateral contracts) require only substantial performance. Non-occurrence of a condition discharges the obligor's duty unless the condition is excused by waiver, estoppel, prevention/hindrance, impossibility, or forfeiture.
How do I practice conditions questions?
The fastest way to improve on conditions is targeted, adaptive practice — working questions that focus on your specific weak spots within this sub-topic, getting immediate feedback, and revisiting items you missed on a spaced-repetition schedule. Neureto's adaptive engine does this automatically across the UBE; start a free 7-day trial to see your sub-topic mastery climb in real time.
What's the most important distinction to remember for conditions?
Express conditions demand strict compliance — substantial performance does NOT satisfy an express condition. Constructive conditions of exchange require only substantial performance. The bar tests this line constantly: a contract clause beginning "if," "on condition that," or "provided that" creates an express condition, and 99% performance is still non-occurrence.
Is there a memory aid for conditions questions?
"WHEEP" excuses a condition: Waiver, Hindrance, Estoppel, Excuse-of-forfeiture, Prevention. For express vs. constructive: "Express = Exact; Constructive = Close enough."
What's a common trap on conditions questions?
Applying substantial performance to an express condition
What's a common trap on conditions questions?
Confusing condition precedent with promise
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