1. The Defendant (Counterclaim Plaintiff) paid KRW 4,901,605 to the Plaintiff (Counterclaim Defendant) and its related amount from August 10, 2017 to April 3, 2019.

A. The Plaintiff is obligated to return to the Defendant an amount equivalent to KRW 7.3 million, which is the difference between the construction cost already paid by the Plaintiff and KRW 35 million. Since there was a defect in the part executed under the instant construction contract, the Plaintiff is obligated to pay KRW 1,853,00 as the contractor the difference between the exchange value in the event it was executed without any defect or defect and the exchange value in the defective condition. The Plaintiff is obligated to compensate for the waste disposal cost incurred by the Plaintiff while suspending the construction.

Therefore, the Plaintiff is obligated to pay KRW 10,383,00 (= KRW 7,300,000) to the Defendant (= KRW 1,853,000).

B.1) Determination 1) The part on the 5th floor area of the construction of the 5th floor x the 6th floor area of the 3rd malk x the 14.0,294,000 m24th m20,680 m20,000 m24th m24th m20,000 m24th m20,000 m20 m23.9.70,000 m20 m23.9,000 m20 m20 m20 m20 m20 m20 m20 m20 m20 m20 m20 m230 m20 m20 m20 m20 m20 m30 m20 m20 m21.