A. The Plaintiff entered into a contract between the Plaintiff and the Defendant 1) The Gangnam-gu Seoul Metropolitan Government building B (hereinafter “instant building”).

(2) On April 27, 2004, the Plaintiff: (a) newly constructed and sold the instant building at 67 Ors 667 and 178 commercial buildings; and (b) on April 27, 2004, the Plaintiff concluded a contract with the Defendant for each of the construction cost of KRW 86,250,793,200 (including value-added tax) and 36 months after the commencement of the construction period (hereinafter “instant contract”); and (c) relevant matters in the terms of the instant contract are as follows.

Article 25 [Defect Security] ① Security period for repairing Defects of the object of a contract shall be two years from the date of approval for use (approval for temporary use) by the competent authority.

(3) Upon occurrence of a defect, the plaintiff shall give the defendant a peremptory notice of performance and make a written request for defect repair, and the defendant shall promptly take appropriate measures when requested to repair the defect.

B. The Plaintiff was approved to use the instant building on July 13, 2007.

C. 1) The result of the prior suit, etc., caused the defects arising from the non-construction, alteration construction, defective construction, etc. in the section for common use of the building of this case, and the owner of the building of this case requested the defendant to repair the defects in the building of this case. 2) The council of occupants' representatives of the building of this case filed a lawsuit against the plaintiff and the defendant on December 30, 2010 (the court 2010Ga135149) against the plaintiff and the defendant about the remaining defects in the section for common use of the building of this case, notwithstanding the above defect repair of the defendant, the council of occupants' representatives of the building of this case filed a claim against the plaintiff, such as the defect repair payment (the court 2010Ga135149).

3.