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)

Open Courtyards and Air Wells

Find out the GFA treatment for open courtyards and air wells

Last updated 6 June 2026

Open courtyards and air wells are recognised as existing GFA only for developments that existed before or in 1960. For post-1960 developments, the covering up of such areas are included as GFA.

From 2013 onwards, courtyards and air wells located within strata areas are to be included as GFA whether they are open or covered, whereas open courtyards and air wells located in the common areas are excluded from GFA.