Custom-order furniture transactions in Jepara Regency may involve defects or discrepancies between the delivered goods and the specifications agreed upon by the parties. Such circumstances raise concerns regarding the fulfillment of the buyer’s khiyar rights when the goods received fail to conform to the agreed terms. This study aims to examine the implementation of khiyar rights in istisna’ contracts in furniture sale transactions in Jepara Regency. This study employs a qualitative approach using field research and a juridical-empirical approach. Data were collected through in-depth interviews with three furniture sellers and three buyers in Jepara Regency, complemented by observation and documentation. The collected data were analyzed descriptively through the stages of data reduction, data presentation, and conclusion drawing. The findings indicate that the implementation of the istisna’ contract in furniture sale and purchase transactions in Jepara Regency is based on an agreement between the parties concerning product specifications, price, payment mechanisms, and completion time. When defects or discrepancies are identified in the finished products, business actors generally address them through repairs, replacement, or adjustments to the defective components. The substantive implementation of khiyar rights has also been observed in practice, although some business actors have not yet developed a formal understanding of the concept of khiyar in Islamic jurisprudence. Its implementation is reflected in the opportunity provided to buyers to inspect the goods, raise objections, and obtain appropriate remedies for goods that do not conform to the agreed specifications. Based on the empirical findings, the predominant form of khiyar is khiyar ‘aib, characterized by the buyer’s right to seek a remedy when defects or discrepancies are found in the subject matter of the contract. These findings demonstrate that furniture sale and purchase practices are substantively consistent with the principles of Islamic economic law, particularly in protecting the rights of the parties and promoting justice, accountability, and mutual benefit.