Here are the basic steps to build a room:
1. Draft a plan of the room you want to build.
2. Acquire building permits.
3. Dig the foundation.
4. Erect the walls.
5. Install roofing.
6. Complete electrical work.
7. Add insulation and drywall.
8. Add finishing touches.
I hope this helps! Let me know if you have any other questions or if there's anything else I can help you with.
[Here](https://www.doityourself.com/stry/how-to-build-a-room--the-basics) is a link to a more detailed guide on how to build a room if you're interested in learning more.