thanks for the comment ... umm for this building, the method i really used was really grouping smaller ones till the end then combinding them all because i didnt really know how big the building was soo didnt just wanna start off with a block since if i do stuff to it, i really cant undo it the things such as the 4 colums at the front and back are different objects to things like the lower building etc. hope that mades some sense.

MJ