Trained Window Installer

All windows must be installed or retrofitted by a trained window installer. A trained window installer is an individual certified by BCA to carry out window works.

The trained window installer must not install, supervise or guide the installation of windows unless he is a director, partner, sole proprietor or an employee of an approved window contractor or a builder.

Offenders may face a penalty of up to $5,000 or jail term of up to six months or to both.


The trained window installer must carry out window works in compliance with the objectives and performance requirements set out in the Building Control Regulations.

Failure to do so may result in a penalty of up to $5,000 or jail term of up to six months or to both.

How to register as a trained window installer

Popular e-Services


The Construction Workforce Registration System (CWRS) is an online portal for CoreTrade and Multi-skilling registration and the renewal of Direct R1 eligibility.

Overseas Testing Management System

OTMS allows you to register the workers for Identity Verification and to check your registration status online.

Lifts and Escalators Application (LEAP) Portal

Lift and escalator owners, contractors and Specialist Professional Engineers (SPEs) can apply for and view applications for Permit to Operate (PTO) here.