Civil Transactions Law

1. If a service contract is concluded to execute an agreed-upon design plan for a lump sum fee, the contractor may not demand any increase in fees, even if there is an increase in the prices of the materials used in the work, the wages of workers, or other expenses. 2. The contractor may not demand any increase in fees if an amendment or addition is made to the design plan, unless such amendment or addition is due to a fault attributable to the client or is made with his permission and he agrees to the increase in fees. 3. If there is any disruption to the balance of contractual obligations of both the client and the contractor due to general exceptional circumstances that could not have been anticipated at the time of concluding the contract, and the basis upon which the estimate was determined becomes no longer valid, the court may, upon consideration of the circumstances and the interests of the parties, order restoration of the contractual balance, including extending the execution period or increasing or decreasing the fees, or it may order termination of the contract.