Yes, a BASIX Certificate may need to be amended, revised or replaced if the project changes after the original certificate has been prepared. This can happen when the design changes, the glazing changes, the insulation strategy changes, a hot water system is updated, a rainwater tank commitment is altered or the plans no longer match the certificate commitments.
To prepare a BASIX Certificate in NSW, an assessor needs enough project information to understand the design, building fabric, water commitments, energy systems and thermal performance pathway. The exact documents required depend on the project type, but most BASIX assessments begin with the architectural drawings and then move into the details that affect water, energy and thermal comfort compliance.
