1. The Defendant’s KRW 53,294,161 as well as 6% per annum from October 24, 2012 to April 1, 2015 to the Plaintiff.

1. Basic facts

A. On January 21, 2008, the Plaintiff concluded a contract with the Defendant for the construction work of building A (hereinafter “instant construction work”) on the ground of Gangnam-gu Seoul (hereinafter “instant construction work”) for the construction work of building A (hereinafter “instant construction work”) at the cost of construction 3,120,000,000 (including value-added tax) and from January 22, 2008 to February 28, 2009.

B. After July 2008, the Plaintiff and the Defendant concluded a modified contract under which the construction amount is increased by KRW 225,000,000 on the ground of material price increase (hereinafter “instant modified contract”). On February 25, 2009, the Plaintiff changed the construction amount to KRW 3,861,00,000 and the construction period is extended by April 30, 2009, respectively (hereinafter “instant modified contract”).

C. The Defendant completed the instant construction on April 2009, and on April 28, 2009, approved the use of the instant building.

[Ground of recognition] Facts without dispute, Gap evidence 1, 7 evidence, Eul evidence 2 and 13, the purport of the whole pleadings

2. The assertion and judgment on defects in defective construction

(a) The summary of the party's assertion 1) Costs of repairing defective construction of the Plaintiff's 1 PH elevator mechanical room (won) 1,538,172 29-H 29-H 8th floor water, and 3,337,234 176,640 170 176,640 170 410,696 10,796 58 105,56267 2,240 1,24022, 2402,240 1,2402,240 1,240 1,240 1,240 1,240 1,240 1,240 3,25 1,25 3,000 3,00 1,000 1,000 2,000 3,00 1,01