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.

Government officials will NEVER ask you to transfer money or disclose bank log-in details over a phone call.

Building and Construction Authority

Regulatory Requirements for New Buildings and Existing Buildings undergoing Major Additions and Alterations (A&A)

To advance sustainable development, the Building Control (Environmental Sustainability) Regulations requires a minimum environmental sustainability standard for new buildings and existing buildings that undergo major retrofitting.

Last updated 2 June 2026
Additions and Alterations

Scope and Details

Submission Requirements

Compliance Standard

Mandatory Higher Green Mark Standard for Government Land Sales (GLS) sites

Related Links

Related Pages