WOHA Architects & MJA Studio
Mustera Property Group
Ecosystem Service Assessment
2019 - 2020
Forbes Residence, Perth
Forbes Residences is a development that embraces WOHA’s five key ratings for new developments: Green Plot Ratio, Community Plot Ratio, Civic Generosity Index, Ecosystem Contribution Index, and Self-Sufficiency Index. It effectively integrates with the surrounding environment, both built and natural.
The building comprises several vertical neighborhoods, each spanning approximately three floors. Each neighborhood features its own vertical hanging gardens, providing green spaces for all residents. These gardens consist of resilient, low-maintenance plants with a naturally pendulous growth habit and extend vertically on three sides, surrounding the sky garden tree.
With a Green Plot Ratio of 115%, Forbes Residences exceeds the Western Australia Planning Commission’s policy requirements of 25% landscaping, providing 182% of the site area as lush greenery. Additionally, the development includes numerous public spaces such as gardens and parklets, resulting in a community plot ratio of 170% and a perfect civic generosity index score of 5/5.
We evaluated Forbes Residences based on its diverse greenscape and assessed its ecosystem service performance. We found that the ground level accommodates tall trees and medium-to-tall shrubs, while elevated structures enable multi-layered plantings of shrubs, small floral trees, and cascading vegetation along the edges. Balconies contribute to the ecosystem service performance with plantings covering approximately 20% of their area.
Comparing Forbes Residences to a typical built-up suburb in Perth, the development excels in various aspects. It is 430% more effective at filtering air, 190% more efficient at regulating air temperature, and an impressive 490% more effective at sequestering carbon dioxide. Forbes Residences stands as a green oasis, surpassing environmental standards and offering a sustainable and vibrant living environment for its residents.