Table 8.1.4 – Additional Costs for Office Buildings Office Building & Construction Costs: Downtown Private $53.2 Million Additional Costs Compared to (Percentage of Total Construction Costs): Current Guidelines: $8,616 (0.02%) IBC 2000: $5,049 (0.01%) IBC 2003: $4,705 (0.01%) Office Building & Construction Costs: Suburban Private $16.8 Million Additional Costs Compared to (Percentage of Total Construction Costs): Current Guidelines: $5,372 (0.03%) IBC 2000: $4,705 (0.03%) IBC 2003: $4,705 (0.03%) Office Building & Construction Costs: Downtown Government $25.2 Million Additional Costs Compared to (Percentage of Total Construction Costs): Current Guidelines: $6,822 (0.03%) IBC 2000: $4,705 (0.02%) IBC 2003: $4,705 (0.02%) Office Building & Construction Costs: Suburban Government $5.6 Million Additional Costs Compared to (Percentage of Total Construction Costs): Current Guidelines: $5,372 (0.1%) IBC 2000: $4,705 (0.08%) IBC 2003: $4,705 (0.08%)