Skip to main content
A Singapore Government Agency Website How to identify
Official website links end with .gov.sg
Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted websites
Secure websites use HTTPS
Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.

Welcome to our refreshed website!

We've updated the site to make information easier to access and navigate. While some content may have been reorganised, you can browse our updated sections to find what you need.

Urban Redevelopment Authority (URA)

Bay Windows

Find out the GFA treatment for bay windows

Last updated 6 June 2026

Bay windows refer to raised windows not exceeding one structural bay width and cantilevered at least 0.5m high from the floor. Bay windows, except those approved before 1st January 2009, are included as GFA.

Cross-section diagram of a building with labels.

Bay Window (Section)