In average, due to the small scale in refurbishment project, the complex types of workers and materials as well as the unstable housing refurbishment quantity, it is easy to let craftsmen lie idle.

• 整建过程中，每个个案平均规模小，需配合的工种与材料繁琐，加上住宅整建案量不稳定，使得人力易发生等候、閒置等浪费。