Defect Option in Real Estate Transactions
In agreements concluded between individuals, the parties may include contractual conditions to reassure themselves or the other party. For an agreement to be valid, any condition included must be lawful. In addition to allowing parties to determine contractual terms, the law also recognizes a right to terminate under specific circumstances.
For example, a contract may be terminated if one party has been deceived, the subject matter of the transaction is defective, or the agreed price significantly deviates from the customary market value.
These legal grounds are commonly referred to as options for termination.
The defect option is one such legal option. This article explains its meaning, the requirements for invoking it, and its application in real estate-related transactions.
Requirements for the Defect Option in Real Estate Transactions
Under the Civil Code, if a defect in the sold item becomes apparent after the sale, the buyer may accept the item, claim a price reduction as compensation, or terminate the contract.
Accordingly, the defect option is a right of termination that may arise for either the buyer or the seller, depending on the circumstances. For example, if the parties agreed that the subject matter would be sound and the defect becomes apparent after the contract is concluded, the buyer may terminate the transaction under the defect option.
Alternatively, the buyer may decide not to terminate the transaction, accept the defective item, or seek compensation from the seller for the defect.
In addition, if the purchase price is not paid in cash and the parties agree that another item will be delivered as consideration, and that item is defective. The seller discovers the defect after delivery, the seller may likewise choose to terminate the transaction, accept the item despite the defect, or claim compensation.
The Defect Option in Real Estate
The defect option is not limited to contracts of sale. It applies to any agreement in which property or goods are exchanged. The general principle is that the subject matter must be sound, and if a defect is discovered later, the right of termination may arise.
This option also applies to transactions involving real estate, including both property purchases and lease arrangements. If a defect in the purchased or leased property becomes apparent after delivery and the buyer or tenant was unaware of it at the time of contracting, they may invoke the defect option.
The Defect Option in Lease Agreements
Under the law, in a lease arrangement, the tenant generally has two choices:
- Terminate the lease due to the defect in the property.
- Accept the defect and pay the rent in full without reduction.
It should be noted that if the landlord remedies the defect by any means, the tenant may no longer invoke the defect option.
If the defect renders the property entirely unusable and the defect cannot be remedied, the lease contract may be considered void.
Terminating a Real Estate Sale Contract Based on the Defect Option
If the property was agreed to be sound, but the buyer receives it with a defect, the buyer may terminate the transaction under the defect option. The following points are essential.
The Defect Must Have Been Hidden at the Time of Contract
This means that the defect existed at the time the contract was concluded and was not apparent to the buyer. It makes no difference whether the defect was intentionally concealed or the buyer failed to notice it due to negligence.
What matters is that the property delivered was defective and the buyer was unaware of the defect at the time of contracting.

The Defect Option Must Be Exercised Promptly
Termination based on a defect is subject to prompt action.
The buyer must terminate within a customary and reasonable period after becoming aware of the defect and deciding to terminate.
If the buyer delays beyond the period that customarily indicates abandonment of termination, the right to terminate is generally lost, and the buyer may only pursue compensation.
Frequently Asked Questions About the Defect Option in Real Estate
The defect option is a legal right that allows a buyer or tenant to terminate a real estate transaction if a defect is discovered in the purchased or leased property, or to seek compensation in accordance with the law.
The defect must have been hidden at the time the contract was concluded and the buyer or tenant must have been unaware of it. In addition, termination must be exercised promptly within a customary and reasonable period after discovery of the defect.
No. The defect option may apply in various transactions involving the exchange of property or goods. It also applies to real estate transactions, including both purchase and lease agreements.
A tenant may terminate the lease due to the defect or accept the defect and pay the rent in full. If the landlord remedies the defect, the tenant generally cannot invoke the defect option.
Yes. If the consideration delivered to the seller is defective, the seller may invoke the defect option by terminating the transaction, accepting the defective consideration, or claiming compensation, depending on the circumstances.
If the customary period for prompt termination has passed, or if the buyer or tenant was aware of the defect and accepted the transaction, termination may no longer be available and only compensation may be pursued. What is the defect option in real estate?
What conditions are required to invoke the defect option in real estate transactions?
Does the defect option apply only to real estate sales?
What options does a tenant have under a lease if a defect exists?
Can the defect option also apply to the seller?
When is termination based on the defect option no longer available?






I bought a property and later found out there was a serious hidden defect. Can I cancel the sale?
Under Iranian law, if a sold property has a defect that existed at the time of the transaction, the buyer may have certain legal options, including accepting the property with compensation or seeking cancellation of the transaction in some circumstances. The available remedy depends on the nature of the defect and the details of the sale agreement.
What counts as a defect in a property? Is any small problem enough to make a claim?
Not every issue with a property will necessarily be considered a legal defect. The assessment usually depends on factors such as the seriousness of the problem, whether it affects the value or normal use of the property, and common standards applicable to the situation.
If the seller knew about a hidden problem in the house but did not tell me, what can I do?
If a seller was aware of a significant issue and failed to disclose relevant information, it may affect the buyer’s legal rights. The available options depend on the evidence showing the condition of the property, the seller’s knowledge, and the terms of the transaction.
I discovered water damage in my apartment after buying it. How can I prove it existed before the purchase?
The timing and cause of the defect are often important issues in these disputes. Evidence such as expert reports, repair records, photographs, and other documents may help determine whether the problem existed before the transaction.
Can a buyer ask for a price reduction instead of cancelling the property sale because of a defect?
Depending on the circumstances, a buyer may have options other than cancellation. Under the rules relating to defects in sale transactions, compensation for the defect may be available in certain situations. The specific remedy depends on the nature of the defect and the applicable legal requirements.
What if the property defect was visible during the inspection but I did not notice it?
A visible issue may be treated differently from a hidden defect because the buyer’s knowledge and ability to discover the problem can be relevant. The legal effect depends on the circumstances, including whether the defect was actually apparent and the terms agreed by the parties.
I purchased a house and the seller said there were no problems, but later I found structural damage. Does his statement matter?
Statements made by the seller may be relevant depending on what was said, whether it was included in the agreement, and whether it affected the buyer’s decision. The importance of such statements depends on the available evidence and the applicable legal rules.
Can I file a claim for a defect in property if I already repaired the problem myself?
Repairing the defect does not necessarily prevent a claim, but it may affect the available evidence. Keeping photographs, invoices, expert opinions, and records of the repairs can be important when evaluating the situation.
Does the seller remain responsible for defects after transferring ownership of the property?
The seller’s responsibility for defects depends on factors such as when the defect existed, what the parties agreed upon, and whether any legal limitations apply. The transfer of ownership alone does not answer every question about possible liability.
If several months have passed since I discovered the defect, can I still use my legal rights?
Timing can be important in defect claims. Under Iranian civil law, the option related to a defect should generally be exercised promptly after the defect becomes known, but the effect of delay depends on the facts of each case.