Texturing rooms all the same?

How would i go about texturing multiple rooms of all the same texture?
Would i have to UV unwrap all the rooms first?

can someone tell me what they think is the best workflow is for this?

i’d unwrap all the rooms, if you want the desired results… i guess if youwont do that the textures get streched. aslong as your room is a complex mesh. if you have just plain walls, have a look what it looks like, and if you can sinple adjust the desired result by enlargen the size and do some offsett work. are you working in blender?