John Kunning coined the term in 1951. The structure of a typical Jetkeep is similar to the home he lived in with Garnett Boastful and Echo Oakley in the 1940s and 1950s. They became the main housing unit for Kuboia in the late 1980s.
Jetkeep housing units often have a linear structure, with each room in it only connecting to up to two different rooms. They normally have a cheap-looking design, with every room having an old-fashioned carpet as the flooring. Usually, only the kitchen and attic have a window.
There are two types of common Jetkeep designs:
- Type A Jetkeeps have generally at least three floors, with one room on each floor. The ground floor is usually the living room, with the kitchen often located in the basement. The main bathroom is often located in a dark, enclosed room next to the kitchen, although several Type A Jetkeeps have smaller bathrooms (with only a toilet and sink) conjoined to each bedroom.
- Type B Jetkeeps are less tall, but also less thin than Type A. They normally have the front door leading to the living room, with the kitchen located in the basement. Each bedroom is often located on the upper floor or underground.
Type A Jetkeeps are the most common type of housing unit in Kuboia. Type B Jetkeeps are fairly common in places like Marvatia, Frawzin and Sycrene. Type A Jetkeeps were very common in Jetania in the 1980s, 1990s and early 2000s, though many have started to be demolished in more recent years.