1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Details of the disposition;

A. On May 21, 2009, the Mayor of Seoul Special Metropolitan City designated the Seodaemun-gu Seoul Western E as a rearrangement zone (hereinafter “instant rearrangement zone”) as a public notice D of Seoul Special Metropolitan City on May 21, 2009.

B. In order to implement the housing redevelopment improvement project (hereinafter “instant project”) in the instant rearrangement zone, Plaintiff A is the owner of a plot of land, etc. in the instant rearrangement zone, who obtained authorization from the Defendant on August 31, 2010, and Plaintiff B is the owner of a plot of land, etc. in the instant rearrangement zone.

C. On July 4, 2016, 38 owners of the entire land, etc. within the instant rearrangement zone requested the Defendant to cancel the designation of the instant rearrangement zone.

The Defendant conducted a resident opinion survey against the owners of land, etc. in the instant improvement zone (mail survey and direct visit survey from December 7, 2016 to February 14, 2017, and on-site voting from January 21, 2017 to January 23, 2017; hereinafter “instant resident opinion survey”) as a result of conducting a resident opinion survey against the owners of land, etc. in the instant improvement zone, and publicly announced the survey on February 22, 2017.

(1) On the part of the participants' participation ratio (%) of the total number of owners of land, etc. in the area, the A redevelopment area 104 876 51 25 125 16 (including 2 state-owned and public-owned land) 84.61 49.03

E. The Mayor of Seoul Special Metropolitan City is the Act on the Maintenance and Improvement of Urban Areas and Dwelling Conditions for Residents before wholly amended by Act No. 14567, Feb. 8, 2017; hereinafter “former Act on the Maintenance and Improvement of Urban Areas and Dwelling Conditions for Residents”).

Article 4-3 (4) and the Seoul Metropolitan Government Ordinance on Urban and Residential Environment Improvement (hereinafter referred to as the "Ordinance on Urban Improvement").

Article 4-3 (3) 4 of the Seoul Special Metropolitan City public notice was cancelled pursuant to the designation of the rearrangement zone in this case, and the defendant, on October 25, 2017, issued a public notice of Seodaemun-gu Seoul Metropolitan Government pursuant to Article 16-2 (1) 3 of the former Urban Improvement Act, "the disposition in this case" is "the cancellation of the authorization for the establishment of the housing redevelopment and consolidation project association in the plaintiff A zone".

(2) [The grounds for recognition.]