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Building and Construction Authority

Requirements for major alteration and replacement works

Access to information on the requirements for major alterations and replacement works of fixed installations.

Last updated 9 March 2026

Major alterations and replacements can be conducted on lifts and escalators.

Permissible changes

The permissible changes to each can be found in this link under the First Schedule.

Process for major alteration and replacement works

The Permit to Operate (PTO) issued will cease when a fixed iInstallations undergoes major alteration or replacement works.

Industry professionals tasked to carry out the alterations must ensure that the following steps are met:

  • The owner must notify the Commissioner in writing before starting any major alteration or replacement works.

  • A BCA-registered FI works contractor must perform the works. The contractor must be supervised by a supervisor QP (Qualified Person).

  • After the works are completed, the supervisor QP must certify that the fixed installation is fit for operation.

  • The owner must then apply for a new Permit to Operate (PTO) for the fixed installation.

Owners can also refer to the Regulations on Notification for certain major alteration or replacement works, etc. for more information regarding major alteration and replacement works.