A Sydney Water building over sewer (BOS), also known as a building over adjacent to asset advice (BAS) letter tells you if Sydney Water approved a building close to, or over, Sydney Water pipes.
Selling agents and conveyancers use the letter to determine if a building on a property has been built with Sydney Water approval.
Sydney Water must approve all buildings and structures that need approval from council or a private certifier.
If your building is close to, or over, Sydney Water pipes, you need to understand Sydney Water’s requirements. They ensure:
