Self-certification for plumbing and drainlaying scheme
Last updated: 7 September 2026
Self-certification for plumbing and drainlaying is a voluntary, opt-in scheme that lets endorsed plumbers and drainlayers self-certify (sign off) eligible work that complies with the building consent.
Use this information to understand the self-certification for plumbing and drainlaying scheme. Choose the information most relevant to your role to learn how self-certification affects building consent processes, responsibilities, and compliance requirements.
Self-certification is optional. Plumbers and drainlayers can choose to self-certify and owners can choose whether to have their eligible plumbing and drainlaying work self-certified.
Learn about the scheme
- How self-certification works
- How endorsed plumbers and drainlayers self-certify
- What work can be self-certified
- Self-certifiable plumbing and drainlaying in a building consent application
- Certificates of compliance for self-certified plumbing and drainlaying
- Building consent authorities (BCAs) and self-certification
- Designers and self-certification
- Homeowners and self-certification
- Self-certification resources