1. The Plaintiff:

A. Defendant Sungchip Franchise Co., Ltd. and B jointly KRW 380,407,132 and KRW 201,00,000 among them.

1. Basic facts

A. Status 1 of the parties concerned) The plaintiff is Sungnam-si A Apartment-gu, Sungnam-si (hereinafter "the apartment of this case").

(2) In order to manage 32 Dong 2,419 households, Defendant Sungchip is an autonomous management body comprised of their occupants. (2) Defendant Sungchip is a company that runs a construction business, air-conditioning and heating facility business, etc., Defendant B is a company that runs a construction supervision business under the trade name of “C”, and Defendant Union is a company that performs damage guarantee business, etc. for its members who run a construction business.

B. On December 26, 2013, the Plaintiff entered into a contract for a construction project (hereinafter “instant contract for a construction project”) with Defendant Sungchip to perform construction works, such as replacing the old water supply and water supply pipes of the instant apartment from December 5, 2013 to April 30, 2014 (hereinafter “instant construction project”), and the Plaintiff entered into a contract for a construction project with Defendant Sungchip to pay KRW 3,69,300,00 (including value-added tax) as the construction cost (hereinafter “instant contract”).

C. On December 23, 2013, the Plaintiff entered into a supervision service agreement with Defendant B, with the content that Defendant B shall provide supervision services for the instant construction project, and that the Plaintiff shall pay KRW 5,800,000 (excluding value-added tax) to Defendant B as the payment for supervision services (hereinafter “instant supervision service agreement”).

A defendant partnership which entered into a contract for the warranty of defects has entered into a contract for the warranty of defects (hereinafter “instant warranty contract”) with the defendant Sungchip on April 18, 2014, where the defendant Sungchip fails to comply with the claim for the performance of the warranty against defects arising within the warranty period (three years) of the instant apartment construction without justifiable grounds even after receiving the claim for the performance of the warranty against defects, the defendant partnership entered into the warranty against defects contract with the plaintiff who is the guarantee creditor (hereinafter “instant warranty contract”), and from April 15, 2014 to April 14, 2017, the warranty period of which is 232,760.