Batcave- only seen in Batman or crossover videos

SpongeBob, Patrick, and Squidward's house- seen in one episode without any SpongeBob characters, and in SpongeBob and crossover movies

Chum Bucket- Home to Plankton and Karen, got shut down in a few episodes, blew up in 3, got business in 2, spruced up in 1, and moved in 4

Krusty Krab- Owned and founded by Mr, Krabs, and only seen in SpongeBob and crossover videos

Sandy's Rocket- Rocket built by Sandy Cheeks, seen as a cameo in 2 episodes, and seen in 8 videos