There are three ways to finish an attic and allow access later to wiring, pipes, ducts, etc.

> The first is to install all the wires, pipes, ducts, etc. you could possibly need before you lay flooring, then you will simply need to access endpoints.

> The second way is to run everything through the joists just outside the finished areas. Then you can access everything through an opening in the “dead space” below the roof slope.

> The third way is to cut access hatches in the floor at specific points. You probably will not like the way this option looks in your finished room, but it is a possibility if you think you can hide the hatches.