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Benefit–Cost Analysis of Green Roof Initiative Projects: The Case of Jung-gu, Seoul

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  • Eunha Shin

    (Department of Urban Planning and Engineering, Hanyang University, 222 Wangsimri-ro, Seoul 04763, Korea)

  • Heungsoon Kim

    (Department of Urban Planning and Engineering, Hanyang University, 222 Wangsimri-ro, Seoul 04763, Korea)

Abstract

Green roofs, which have various economic, environmental and social effects, have been acknowledged as an alternative green space in urban areas. This study aims to investigate the economic feasibility of green roof projects by conducting a benefit–cost analysis on the case of Jung-gu, Seoul. The analysis estimates and compares five different scenarios applied in the study area with a 20-year operation period in all cases. This set of scenarios aims to compare the most idealistic situation with more achievable and realistic situations, to provide policy implications for green roof initiative projects in Seoul. The analysis consists of estimating six cost items and eight benefit items. Among the benefit items, two non-marketable elements are estimated by the contingent valuation method. The scenario with 100% application of a green roof, has benefits exceeding the costs with a benefit–cost ratio of 1.174. However, the other scenarios with certain prerequisites have a benefit–cost ratio that is very close, but still smaller than 1. Therefore, it is possible to claim that green roof initiative projects are economically viable under specific conditions. However, there are many restrictions to engaging in green roof constructions for entire building rooftops.

Suggested Citation

  • Eunha Shin & Heungsoon Kim, 2019. "Benefit–Cost Analysis of Green Roof Initiative Projects: The Case of Jung-gu, Seoul," Sustainability, MDPI, vol. 11(12), pages 1-18, June.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:12:p:3319-:d:240222
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    References listed on IDEAS

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    1. Nurmi, Väinö & Votsis, Athanasios & Perrels, Adriaan & Lehvävirta, Susanna, 2016. "Green Roof Cost-Benefit Analysis: Special Emphasis on Scenic Benefits," Journal of Benefit-Cost Analysis, Cambridge University Press, vol. 7(3), pages 488-522, October.
    2. Seung-Hoon Park & Dong-Won Ko, 2018. "Investigating the Effects of the Built Environment on PM 2.5 and PM 10 : A Case Study of Seoul Metropolitan City, South Korea," Sustainability, MDPI, vol. 10(12), pages 1-11, December.
    3. Margareth Viecco & Sergio Vera & Héctor Jorquera & Waldo Bustamante & Jorge Gironás & Cynnamon Dobbs & Eduardo Leiva, 2018. "Potential of Particle Matter Dry Deposition on Green Roofs and Living Walls Vegetation for Mitigating Urban Atmospheric Pollution in Semiarid Climates," Sustainability, MDPI, vol. 10(7), pages 1-18, July.
    4. Vassilis Markantonis & Kostas Bithas, 2010. "The application of the contingent valuation method in estimating the climate change mitigation and adaptation policies in Greece. An expert-based approach," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 12(5), pages 807-824, October.
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    Cited by:

    1. Mitali Yeshwant Joshi & Jacques Teller, 2021. "Urban Integration of Green Roofs: Current Challenges and Perspectives," Sustainability, MDPI, vol. 13(22), pages 1-33, November.
    2. Chelli, Alessia & Brander, Luke & Geneletti, Davide, 2025. "Cost-Benefit analysis of urban nature-based solutions: A systematic review of approaches and scales with a focus on benefit valuation," Ecosystem Services, Elsevier, vol. 71(C).
    3. Manuel J. Carretero-Ayuso & Carlos E. Rodríguez-Jiménez, 2019. "Calculation of the Risk of Lawsuits over Construction Flaws in Flat Roofs," Sustainability, MDPI, vol. 11(18), pages 1-18, September.
    4. Jaromir Vrbka & Tomas Krulicky & Tomas Brabenec & Jan Hejda, 2020. "Determining the Increase in a Building’s Appreciation Rate Due to a Reconstruction," Sustainability, MDPI, vol. 12(18), pages 1-13, September.
    5. Yuming Wu & Katsunori Furuya & Bowen Xiao & Ruochen Ma, 2025. "Optimizing Urban Green Roofs: An Integrated Framework for Suitability, Economic Viability, and Microclimate Regulation," Land, MDPI, vol. 14(9), pages 1-33, August.
    6. Jing Dong & Jin Zuo & Jiancheng Luo, 2020. "Development of a Management Framework for Applying Green Roof Policy in Urban China: A Preliminary Study," Sustainability, MDPI, vol. 12(24), pages 1-22, December.
    7. Sri Yuliani & Gagoek Hardiman & Erni Setyowati, 2020. "Green-Roof: The Role of Community in the Substitution of Green-Space toward Sustainable Development," Sustainability, MDPI, vol. 12(4), pages 1-14, February.

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