Zim's Base, or Zim's House, is the home of both Zim and GIR. When Zim and GIR reached Earth, they found an area between two apartment buildings, and, using an Irken device, created a base based on what he thought was normal, since GIR didn't help him any. It is a tall green house that is very out-of-proportion. It has a sattelite dish on the top and several lawn gnomes out front, which are part of the house's defences (the gnomes shoot lasers out of their eyes)Though they can destroy humans with ease,it is seen in many episodes when Bloaty's Pizza Hog deliver-men can pass with ease.GIR,here,might be interfering with the bases defences for passage. The actual material of the house seems to be quite maleable, almost not there, since during the creation of the house four posts grew out of the device in the ground, and the walls were created through beams of light flashing between them. In addition, during the episode Plague of Babies Zim is able to ask the house to make a window in the attic, which the house can do without removing the piece of wall in any conventional means. GIR takes out the trash.
Zim's base appears to have a main floor, an attic, and a series of underground floors. The main floor has two large rooms, about equal in size. The first room is an entryway/living room/television room. It contains the front door, two closets, (where Robo-Mom and Robo-Dad are), A large couch, a very large television set, a picture of a monkey that doubles as a two way video communication screen with the Tallest, and an entryway to the next room. The second room is a kitchen. It contains a toilet/elevator to the next floors, and standard kitchen supplies. Above the toilet is a poster that says "I eat food" and on another wall is a poster that says "Earth Food Rocks!" The first floor's celing seems to be made of an arrangement of claw-like pipes.
The layout of the underground floors is not entirely known, but there is an armory, a large circular room containing the house's brain, several labs, a holodeck, a telescope chamber, a large room with a control panel and a huge viewscreen, and various other rooms and hallways, though when zooming in through the dirt it seems to be composed of spherical chambers connected by pipes. The color scheme of the underground floors seems to be mostly red, even though Zim's favorite color is probably purple.
The attic is where the Voot Cruiser is located. The attic is also located in the roof, which can open up for access to the Voot Cruiser's flight capacity.
The house is capable of separating from its base and moving on its own via its robotic dog form. This occurred when Gir's mind had accidently been inserted into the house's brain. How Gir knew or activated this is unknown.
It is shown in The Nightmare Begins that Zim's base requires an incredible amount of power is required, as shown by the massive power cable going into two nextdoor homes. The residents, even though plagued by power loss don't seem to either notice or care(this is because they are eather have low levels of intelligence, to busy to notice, or very tired from their long day of work.
The house is run by a computer that uses the house as a body and the computer is "alive". It will obey Zim. If you are heading to the controll room you will not be let in unless your Zim or GIR. It scans brainwaves. so if your heading to that room don't expect to be let in.
And now for some screen shots of the house
The neighboor hood
The living room
There are many other rooms but these were the only ones I could find