How do you model rooms, hallways, ect?

When I first learned to 3d model it was always with the organic, so I’m pretty decent at making humans and creatures. But now that I want to learn how to use the blender GE I want to model rooms and halls and buildings for a game. All these things have things I’m not sure how to make, such as the window holes all level with one another. Where should I look to learn how to make such stuff? Thanks.

Found this tutorial on modeling a whole house, kind of long but, might have some helpful info in it for you.

A nice thing I learned for windows or any other object that you want to have multiples of is to go into the modifiers menu and add an array to it. Then you can set how many copies you want and set the spacing,