1. The Defendant shall pay to the Plaintiff KRW 556,814,253 and the interest rate of KRW 12% per annum from June 20, 2019 to the date of full payment.

A. A company established for the purpose of architectural design business, etc. is a company that received a contract from the Defendant for the design business of the instant construction project, such as subsequent viewing.

B. 1) On October 22, 2008, the Plaintiff and the Defendant entered into a contract for design with the Defendant on a contract basis (hereinafter “instant contract”). The Plaintiff and the Defendant agreed on October 22, 2008 regarding the work of preparing the basic design and the shop design and the design documents necessary for the execution of the

(2) The contractual unit price and payment method stipulated in the instant contract are as follows. The contractual unit price: the unit price per 9,500 square meter per total floor area of the building;

(a) 3,400 won per square meter before the establishment of an association of 2,200 won when entering into a contract;

(b) 1,200 won upon completion of designation of a district;

(c) 6,100 won per square meter until a usage inspection of 2,200 won is completed upon receipt of authorization for project implementation;

(d) 2,200 won when completing the authorization for project implementation;

(e) 1,100 won when delivery of the commenced books;

F. The method of payment of KRW 600(b) when applying for usage inspection * Value-added tax * separate * the Defendant paid service costs within 15 days from the date of each phase, and leased service costs from the contractor after the contractor was selected. 3) The Plaintiff performed the work of preparing documents related to the design and urban management planning in accordance with the instant contract, and based on this, the Defendant applied for the designation of the housing redevelopment improvement zone at the time of thecheon City on January 11, 2010, and publicly notified the improvement zone for the instant project.

The total building area in the above notice is 162,923 square meters;

C) Around January 31, 2019, the Defendant selected D Co., Ltd. as the contractor of the instant construction project. [The fact that there is no dispute over the grounds for recognition, entries in Gap evidence 1 through 13, and the purport of the entire pleadings.]

2. Determination

A. According to the facts acknowledged prior to the determination of the cause of the claim, the Plaintiff performed his duties in accordance with the instant contract.