Civil Engineering and Architecture 10(7): 3083-3090, 2022 http://www.hrpub.org DOI: 10.13189/cea.2022.100721 Implementing the Greenship Existing Building 1.1 to Improve Catholic Church Performance (Case Study: St. Antonius Padua Pasuruan, East Java) Aurelius Andri Wibowo * , Maranatha Wijayaningtyas, Sutanto Hidayat Civil Engineering Program Study, Postgraduate, National Institute of Technology (ITN) Malang, Indonesia Received June 17, 2022; Revised September 7, 2022; Accepted October 11, 2022 Cite This Paper in the Following Citation Styles (a): [1] Aurelius Andri Wibowo, Maranatha Wijayaningtyas, Sutanto Hidayat , "Implementing the Greenship Existing Building 1.1 to Improve Catholic Church Performance (Case Study: St. Antonius Padua Pasuruan, East Java)," Civil Engineering and Architecture, Vol. 10, No. 7, pp. 3083 - 3090, 2022. DOI: 10.13189/cea.2022.100721. (b): Aurelius Andri Wibowo, Maranatha Wijayaningtyas, Sutanto Hidayat (2022). Implementing the Greenship Existing Building 1.1 to Improve Catholic Church Performance (Case Study: St. Antonius Padua Pasuruan, East Java). Civil Engineering and Architecture, 10(7), 3083 - 3090. DOI: 10.13189/cea.2022.100721. Copyright©2022 by authors, all rights reserved. Authors agree that this article remains permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Abstract Caring for, utilizing and preserving cultural heritage buildings located in polluted areas is not a simple matter. There are many things that become the focus of attention, such as commitment and consistency of human resources, various policies/ regulations as conservation guidelines, supporting equipment, maintenance/ renovation methods, recycling/ reuse materials, utilization management, and cost optimization. Evaluating the performance of cultural heritage buildings based on the Greenship Existing Building Version 1.1. becomes valuable input for managers. The next step is to evaluate the green perception and behavior of the Catholics to overcome the problem of disturbing the comfort of worship. Environmental improvement and improving the quality of green perception and behavior are two inseparable things, interrelated and reinforcing each other. Utilizing Greenship parameters and Importance Performance Analysis can produce a form of evaluation that is right on target. The results of the evaluation become recommendations for the implementation of improving building performance and optimizing the cost of preserving the Catholic Church of St. Antonius Padua Pasuruan as a cultural heritage. Research shows that the Church is ranked Silver, with a Church score of 52.99% (62 points) smaller than the total score of 117 points. Efforts to improve church performance based on the potential of Catholics are focused on reforestation, saving electricity consumption and increasing the capacity of church building maintenance personnel. Keywords Evaluation, Greenship, Improvement, Church Performance, Recommendations 1. Introduction The Church of St. Anthony of Padua was built and inaugurated on July 28, 1895, and was designated as a cultural heritage in May 2020 by the Decree of the Mayor of Pasuruan No.188/166/423.011/2020. As a place of worship, this church is designed with a comfortable and environmentally friendly character in the Pasuruan city area [2]. However, due to climate change and environmental degradation, the church is experiencing discomfort in the form of pollution and seawater intrusion. Thus, the evaluation and implementation based on Greenship Existing Building Version 1.1 is a continuous effort for the preservation of the cultural heritage church. Based on the Greenship, the assessment of the comfort and friendliness of the church was carried out in the period October 2020-January 2021 by the church administrator, the Pastoral Council of the Parish of St. Antonius Padua Pasuruan. This joint assessment data is processed by Importance Performance Analysis. This assessment is carried out together with the management so that all people actively participate in preserving the cultural heritage church and its environment [3].