## 3 Results
### External and Internal Key Indicators  
Through AHP and DHP analysis, the sort order of 25 key indicators affecting leasing willingness is derived. Key indicators can be divided into external and internal indicators as shown in Table 5. Among them, the external indicators belong to the projects that cannot be improved by property management unit alone. The improvement of internal indicators will help increase the willingness to rent, thus the operation of sustainable buildings will be more stable due to the increase in user satisfaction. The importance and satisfaction of property facilities were analyzed based on 16 internal indicators. 25 respondents rated 16 key indicators following Likert Scale [17]. Importance and satisfaction scores of each indicator are shown in Table 6.  
The distribution of internal indicators based on the scores of importance and satisfaction is illustrated in Figure 2. \begin{table}
\begin{tabular}{c c c c} \hline
**Level 1** & **Level 2** & **Cumulative Weight** & **Rank** \\ \hline \multirow{4}{*}{Nearby facilities 10.29\%} & 11. Common Facilities & 2.84\% & 14 \\  & 12. Service amenities & 2.83\% & 15 \\  & 13. Dual power & 2.48\% & 18 \\  & 14. Healthcare support & 1.49\% & 23 \\  & 15. Hotel selections & 1.78\% & 22 \\ \hline \multirow{4}{*}{Transportation convenience 24.25\%} & 16. Metro stations & 9.97\% & 2 \\  & 17. Highway interchanges & 2.26\% & 21 \\  & 18. Car Parking & 4.03\% & 8 \\  & 19. Transportation & 6.29\% & 5 \\  & 20. Road networks & 3.12\% & 12 \\ \hline \multirow{4}{*}{Image 20.21\%} & 21. Landmark building & 7.65\% & 3 \\  & 22. Green and smart building & 2.92\% & 13 \\  & 23. Tenant portfolio & 4.98\% & 7 \\ \cline{1-1}  & 24. Image of Owner & 2.38\% & 19 \\ \cline{1-1}  & 25. Property management & 5.88\% & 6 \\ \hline \multicolumn{2}{c}{100\%} & 100\% & \\ \hline \end{tabular}
\end{table} 
Table 4: _Cont._ \begin{table}
\begin{tabular}{c c c} \hline
**Type** & **Key Indicators** & **Description** \\ \hline \multirow{4}{*}{External} & 1. Central business district & Located in the main business district of Taipei City \\  & 2. Recreational space & Close to recreational space such as Xinyi \\  & & Sports Center \\  & 3. Common facilities & Nearby area provides a full range of necessary \\  & & public facilities \\  & 4. Healthcare support & Close to medical resources such as hospital in case \\  & & of emergency \\  & 5. Hotel selections & Adjacent to star-rated hotels providing \\  & & Accommodation options for foreign visitors \\  & & The building is connected to the exit of the \\  & & MRT station \\  & 7. Highway interchanges & Connectivity to the highway interchange. \\  & 8. Transportation & Public transit is convenient around the building \\  & 9. Road networks & Connectivity to complete road networks \\ \hline \end{tabular}
\end{table} 
Table 5: External and internal key indicators. \begin{table}
\begin{tabular}{l c c} \hline \hline
**Key Indicators** & **Importance** & **Satisfaction** \\ \hline
1. Height of ceiling & 4.3667 & 3.6000 \\
2. Defense of earthquake & 4.3667 & 4.6333 \\
3. High-Level building materials & 3.8667 & 3.6667 \\
4. Independent A/C & 4.3667 & 3.0000 \\
5. Backup power & 4.6333 & 3.8333 \\
6. Shopping area & 3.8333 & 4.3333 \\
7. Dining selections & 4.3000 & 4.0000 \\
8. Zoning & 4.1667 & 3.9000 \\
9. Service amenities & 4.4333 & 4.4333 \\
10. Dual power & 4.4333 & 3.8000 \\
11. Car parking & 4.7000 & 3.9667 \\
12. Landmark Building & 4.4000 & 4.3000 \\
13. Green and smart building & 3.9667 & 3.8000 \\
14. Tenant portfolio & 4.5667 & 3.8000 \\
15. Image of Owner & 3.8000 & 3.9000 \\
16. Property management & 4.6667 & 4.3667 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Importance and satisfaction scores of internal key indicators.