Loading a large model into Unity

Im using a house model for mobile the finished model will be around 1.5 gbs
I read that Unity only renders what the camera can see. So if this house has 10 rooms, then unity will only render each room its in?
Should I load each room slowly into the scene? then unload other rooms?
could i just load the whole huge house? or would this kill my memory?
Sorry Im still very much a noob… Thanks for help!!

I would just load the whole house, unloading rooms won’t save your memory too much. Besides you can’t load different parts of a house and then unload them if the house is just one model, you would have to have a different model for each room to do that.

Yeah thats how i would do it, i would seperate each part of the house into different models. Then load and unload them as the player walks.
But if he doesnt help much then I really would just rather load the whole model. It would be a lot of extra work to do that.