Future Planning

My organisation owns a few company, and will be merging into one building in the coming 4 years. The building will be of 4 stories.
In the coming 4 years, what kind of technology should we expect? I am responsible of cabling to security of the building. My organisation does not heavily depend on the networks though. What kind of line should i use? The building is going to be contructed and the cabling must go in. I do not want the cablings to go obsolete.