1. The Plaintiff:

A. As to Defendant B Co., Ltd, the amount of KRW 240,062,755 and KRW 151,939,078 among them, the amount of KRW 240,062,75 shall be from July 7, 2017.

1. Basic facts

A. The Plaintiff as the Plaintiff (formerly changed: H Corporation) is a project proprietor who constructed, sold, or sold J Apartment 7 and 548 households (284 households, 264 households, 264 households, and hereinafter “instant apartment”) located in Seoul Special Metropolitan City, Nowon-gu I.

B. The conclusion of the contract and the completion of the construction of the new apartment in this case

(2) Defendant C Co., Ltd. (hereinafter “Defendant C”) contracted the instant apartment construction from the Plaintiff and completed the instant construction work.

3) Defendant D Co., Ltd. (hereinafter “Defendant D”)

(4) Defendant E Co., Ltd. (hereinafter “Defendant E”) contracted with the Plaintiff for the purchase and installation work of the instant apartment site, and completed the instant construction work.

5) On November 20, 2009, the Plaintiff obtained approval for the use of the instant apartment on or around November 20, 2009. C. 1) Defendant F Co., Ltd. (hereinafter “Defendant F”) concluded a warranty insurance contract with Defendant F Co., Ltd. (hereinafter “Defendant F”) on November 23, 2009 with the following content.

Serial 184,752,540 on November 1, 2009; 123,509; 123,509; 370 on November 1, 2019; 36,076; 9.1, 200 on October 31, 2014; 36.36. 31, 20. 31. 20 on October 31, 2013; 4. 20 on 31, 203. 31. 4, 20 on 31, 205; 4. 4, 20 on 31. 31, 203; 4. 1. 4, 20 on 31, 2013; 6. 1. 4, 200 on 18. 1, 200 on 11, 2009;