The pineapple originates from land, when it fell off of a ship navigating above the sea, as seen in the TV movie "Truth or Square."
Interior and exterior
There is a garage in the back of the house and two windows in the front. The garage is first seen in the episode "Reef Blower." Out back of the house, the backyard is closed in by a square of flowers, much like the ones seen in the sky.
It also has an outdoor tap where a hose can be attached, as seen in "Unreal Estate."
There is a small garage in the back of the house and two windows in the front.
Out back of the house, the backyard is closed in by a square of flowers, but in The SpongeBob SquarePants Movie video game (PS2/PC), SpongeBob's backyard has boards instead. On the first floor, the house features a living room, coat closet, trophy closet, kitchen, laundry room, and a kitchen pantry.
The living room features an inflatable sofa, a regular armchair with a life ring as a seat, and a diving helmet-shaped TV, and a small table with a phone shaped like a conch shell called a "shellphone." There are decorations such as a fishing lure above the sofa, a photo of Gary near the kitchen door, and on the left a fishing hook wall ornament, above a small table. On the small table is a potted coral plant. The living room features bamboo wallpaper, two fishing hook ornaments, and various pictures framed on the wall.
The kitchen contains a fridge, a stove, sink, a cupboard, and a table, and other typical kitchen tools. Gary's food bowl can also be found here, though sometimes it is seen in SpongeBob's bedroom. A green staircase is located outside of the kitchen.
There is a set of stairs on the left that twists around the home and stops at a safe door behind the chute entrance to the second floor. In some episodes, there is a hallway behind the door.
SpongeBob's bathroom is found on the second floor. The hallway contains doors leading to his library, bathroom, and gallery, as well as an additional staircase that leads to his bedroom.
His bathroom contains a square-shaped toilet, a shower/bathtub, a sink, wringer, etc. as well as a porthole window that looks out onto Conch Street. His bathtub is decorated with a bamboo curtain.
The staircase to the third floor is also green-colored and is found next to the library. SpongeBob's bedroom is found on the third floor, along with a hallway. SpongeBob's bedroom features a foghorn that serves as an alarm clock, and a diving board above his bed (which has three mattresses). The bedroom also contains a porthole window from which the inside of Squidward's house can be seen. The fifth-season episode "Night Light" shows that there is another bathroom attached to the bedroom.
As seen in Battle for Bikini Bottom, SpongeBob's bedroom is on the first floor as SpongeBob's house appears to only have one floor in that video game.
SpongeBob's third floor contains an escape hatch to the roof. Most of the time, SpongeBob climbs onto his roof to avoid various types of danger, although he also runs up his wall to the roof in, "Best Day Ever" where Gary is revealed to be at the top of. The roof contains one unfurnished room with no ceiling, and the wall is made out of the crown of the pineapple.
Instances when destroyed
"Home Sweet Pineapple" - SpongeBob's pineapple house is destroyed by nematodes but it grows back when SpongeBob plants the seed it got reduced to.
"Sandy, SpongeBob, and the Worm" - A giant worm, which ravages the entire city of Bikini Bottom, destroys parts of the house. Alongside, the worm might've smashed the house along with the rest of Bikini Bottom after the worm falls off a cliff.
"Opposite Day" - SpongeBob and Patrick destroy the house on purpose, only to be fixed by Squidward, shortly afterward.
"Procrastination" - SpongeBob's house was on fire, but that was only his dream.
"Spy Buddies" - SpongeBob's house gets fried and turns black when a self-destructed patty explodes in Patrick's pants.
"Home Sweet Rubble" - Due to being rotten, SpongeBob's house disintegrated, but was replaced by each of something of his friends' favorite things, but was soon replaced again by a fully furnished pineapple in a can.
"Don't Wake Patrick" - Patrick makes a mess in the living room and threw a refrigerator through a wall while sleep-walking.
"Bunny Hunt" - The sea bunny destroys most of SpongeBob's living room while eating hot sauce. Later, when Patrick and the bunny crawls underneath the wallpaper, they knock over various things on the walls and ceiling.
"Chatterbox Gary" - After Squidward stole the translation collar and replaced it with a fake one, he spoke through the walkie-talkie and made SpongeBob create a big hole on the side of his house. Then he made SpongeBob attach wheels on the bottom and it rolled away. Luckily, the house rolled back and implanted back to where it was.
"Drive Happy" - SpongeBob destroys the front of his home to allow Coupe to enter. Coupe also destroys SpongeBob's bed, and leaves muddy tire tracks all over the house.
"Appointment TV" - SpongeBob's VCR goes haywire and causes a fire in the living room.
"The String" - The house was presumably destroyed when SpongeBob unraveled all of Bikini Bottom and the Milky Way with the string.
In "Squid Baby," it is mentioned by SpongeBob that his house contains an attic.
In the episode "Truth or Square," it shows that a sailor was painting a bowl of fruit in the sea, then a pineapple falls out of the bowl and lands near Squidward's house; a door and windows suddenly appear.
The staircase inside SpongeBob's house is sometimes on the left side, and sometimes it's on the right side, or it could be on both sides.
In the episode "I'm with Stupid," after SpongeBob crashes into his house, Marty says "That's unhealthy," after Janet says, "He lives in a fruit?" This is because of their stupidity.
In "One Krabs Trash," his bedroom is on the first floor, while it is usually on the third floor.
There is a game on TLC.com in which players have to match coupons to the correct item and one of the coupons has the pineapple house on it.
In the episode "Help Wanted," when the first time SpongeBob's house was seen, there is only one window on the top left, but in future episodes, he has two windows.
Sometimes, the garage at the back of SpongeBob's house is directly in the center, and sometimes, more off to the side. Sometimes, there's a back door in the center.
His house is sometimes shown as an actual pineapple and other times, it appears to be made of wood.
When one compares the outside and inside of SpongeBob's house, his house looks a lot bigger on the inside.
In the episode "Help Wanted," SpongeBob's bed is on the right side of the room, but in other episodes, his bed is on the left side.
If a straw is stuck in the side in the house, one could use it to drink the pineapple juice from it. This is demonstrated by the nematodes in the episode "Home Sweet Pineapple."
In the episode "Boating School," SpongeBob's library is located right where the staircase should be. Yet, in later episodes, the true passageway to SpongeBob's library is unknown though many instances show that it is located just before the stairs, supposedly if SpongeBob has a hallway connecting the stairs and the library.
In the episode "Suds," SpongeBob's house is frozen because he left his refrigerator open for too long.