Service tax for real estate

Dear Experts 

A real estate company charge total amount  for flat collectively  

as - BSP - 25 Lakh (including all charges) 

OR 

BSP -20 lakh,  Power back up -1Lakh , EDC and IDC - 1Lakh , Car Parking - 1 Lakh , PLC -1 Lakh  -    Total -25 Lakh 

My queries are 

what is rate of  Service tax on parts other than BSP 

Do  there  any objection to departement to charge amount collectively  

 thanks and regards

Ritesh Khurana