Explore layers. Once the various elements of you model are built as components/groups then assign them each to different layers. You can turn visibility of layers on and off in the layers window and these settings will be recorded in the scene info. So hide every layer but the foundation then make a scene, reveal the walls and make another scene and so on. Anamations are the progressive movement between scenes so you can move the camera position between scenes as well. When you are done you can export anamation as a video.
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