Lately, the development of greening material with eco-functions has received much attention due to the anticipation
of global climate change (Ushada & Murase, 2006). Greening material is building components that is attached as a
way to increase the number of plants in densitive area or populated city areas (Emilsson et al, 2007). Methods which
are commonly used in financial analysis and investment feasibility study are Payback Period (PP), Net Present Value
(NPV) and Internal Rate of Return (IRR). All these methods are used in order to determine the financial performance