Table 8.4.5 – Additional Costs for Federal, State, and Local Government Housing : Dwelling Unit & Project Costs: Dwelling Unit with Mobility Features Additional Costs Compared to (Percentage of Total Project Construction Costs): Current Guidelines $1,440 IBC 2000 & 2003 $1,440 Dwelling Unit & Project Costs: Dwelling Unit with Communication Features Additional Costs Compared to (Percentage of Total Project Construction Costs): Current Guidelines $675 IBC 2000 & 2003 $675 Dwelling Unit & Project Costs: Project with 20 Dwelling Units $2 million Additional Costs Compared to (Percentage of Total Project Construction Costs): Current Guidelines $2,115 (0.01%) IBC 2000 & 2003 $2,115 (0.01%)