prefabs

noun
  1. 1

    A prefabricated building.

  2. 2

    A prefabricated section of a building.

  3. 3

    A single-storey prefabricated home built in many British cities immediately after World War II, intended to have a short life, but in a few cases still in use.

Source: https://en.wiktionary.org/wiki/prefab, https://en.wiktionary.org/wiki/prefabs