1. The part of the judgment of the court of first instance against the plaintiff, which orders payment below, shall be revoked.

The defendant.

1. Basic facts

A. The Plaintiff, a corporation mainly responsible for gas construction business, etc., was awarded a contract with the Defendant to install household pipes, strings, etc. for 17 multi-households and 14 multi-households located in Sejong Special Self-Governing City B (hereinafter “instant construction”), and completed the said construction.

B. The Defendant paid each of the construction cost to the Plaintiff KRW 5 million on November 15, 2012, KRW 2 million on December 12, 2012, and KRW 8 million on January 30, 2013.

【Ground of recognition】 The fact that there has been no dispute, each entry or video of Gap's 1 through 4 (including branch numbers, if any) and the purport of whole pleadings

2. Determination as to the cause of action

A. The plaintiff asserts that at the first time of the instant construction, the plaintiff did not confirm whether urban gas was supplied to the above multi-household housing, and therefore, he decided to construct a total of KRW 1,488,00 per each household unit (=4.80,000 won x 31 households). However, he asserts that the defendant is obliged to pay the plaintiff a total of KRW 5,188,000,000,000,000,000 for multi-household housing on the ground of Sejong Special Self-Governing City, and KRW 1.3 million for multi-household housing on the ground of Sejong Special Self-Governing City, and KRW 4,000,000 for multi-family housing on the ground of the above construction (= KRW 1,48,00,000,000 for KRW 1,5,000,000,000 for the above construction price and damages for delay.

In this regard, the defendant asserts that the construction cost of this case agreed to set the total of KRW 480,000 won per household and the total of KRW 14,88,000 per household, including all household pipes and installation works for seals, as KRW 15 million.

B. We examine the following circumstances as a result of the appraisal of the above facts and the construction cost of appraiser D, namely, the construction cost of the construction of the construction of the construction of the construction of the instant case as a result of the appraisal of construction cost, i.e., the total amount of KRW 32,797,194, and the Defendant’s construction cost per household 480,000.